100525 + Interview Questions in GENERAL QA IN GENERAL AWARENESS Page 281 InterviewSolution

14001.	S1: E2O5 is less acidic than E2O3 (element E is belongs to 15th group).S2 : E2O3 acidic strength decreases down the group (element E is belongs to 15th group). (1) Both S1, & S2 are true (2) Both S1 & S2 are false(3) S1. is true & S2 is false(4) S1 is false & S2 is true
Answer» Correct option is (1) Both S1, & S2 are true S₁: In 15th group oxide higher the oxidation state of element higher is acidic character Example: P₂O₃ less acidic than P₂O_s. 15^th group N₂O₃ Acidic P₂O₃ Acidic As₂O₃ Amphoteric Sb₂O₃ Amphoteric Bi₂O₃ Basic

14001.

S1: E2O5 is less acidic than E2O3 (element E is belongs to 15th group).S2 : E2O3 acidic strength decreases down the group (element E is belongs to 15th group). (1) Both S1, & S2 are true (2) Both S1 & S2 are false(3) S1. is true & S2 is false(4) S1 is false & S2 is true

Answer»

Correct option is (1) Both S1, & S2 are true

S₁: In 15th group oxide higher the oxidation state of element higher is acidic character
Example: P₂O₃ less acidic than P₂O_s.
15^th group
N₂O₃ Acidic
P₂O₃ Acidic
As₂O₃ Amphoteric
Sb₂O₃ Amphoteric
Bi₂O₃ Basic

Discussion

14002.	It was a wonderful holiday. I will always remember _____ the Niagara Falls.A) seeing B) to see C)saw D) see
Answer» Correct option is A) seeing

Discussion

14003.	Who’s the girl _____ blue _____ yellow hair? A) in / with B) with / with C) of / in D) on / of
Answer» Correct option is A) in / with

Discussion

14004.	Who’s the blonde girl _____ the first row? A) in B) on C) at D) over
Answer» Correct option is A) in

Discussion

14005.	Santosh deals.............. grains.(Choose the suitable preposition)(a) with(b) in(c) at(d) for
Answer» Santosh deals in grains.

Discussion

14006.	What is your idea of wellness?
Answer» My idea of wellness is a state of complete physical, social, financial and mental wellbeing. In other words I should be physically healthy, free from diseases. Socially I must be accepted by others and they should like me. Financially I should be free so that I can have all the material that I think I need for my comfort and happiness. Mental wellbeing is a state which always keeps me happy, optimistic and contented, free from tensions, worries and anxieties.

Discussion

14007.	Look at the Logo give below.Can you identify the words that appear with the entry ‘wellness’ in the logo?
Answer» The words are Health, exercise, flexibility, movement, balance, energy.

Discussion

14008.	CH3OH,C2H5OH, C3H7OH, ...........Observe the above series of compound and answer the given questions. (a) Is it a homologous series ? Why ? (b) Do they show similarities in chemical and physical properties ? Why ? (c) Write the next two homologs in the series, if it is a homologous series. (d) Write any homologous series which you know
Answer» (a) Yes, it is a homologous series. Because, the difference between two successive homologs is – CH₂. (b) Yes, the compounds show similar chemical and physical properties. Because all are have same functional group and same molecular formula, C_nH_{2n + 1}OH. (c) The next homologs are C₄ H₉OH and C₅ H₁₁OH. (d) C₂H₄,C₃ H₆, C₄H₈, C₅H₁₀ , ......... is a homologous series.

14008.

CH3OH,C2H5OH, C3H7OH, ...........Observe the above series of compound and answer the given questions. (a) Is it a homologous series ? Why ? (b) Do they show similarities in chemical and physical properties ? Why ? (c) Write the next two homologs in the series, if it is a homologous series. (d) Write any homologous series which you know

Answer»

(a) Yes, it is a homologous series. Because, the difference between two successive homologs is – CH₂.

(b) Yes, the compounds show similar chemical and physical properties. Because all are have same functional group and same molecular formula, C_nH_{2n + 1}OH.

(c) The next homologs are C₄ H₉OH and C₅ H₁₁OH.

(d) C₂H₄,C₃ H₆, C₄H₈, C₅H₁₀ , ......... is a homologous series.

Discussion

14009.	You are invited to prepare a presentation slide for the Cancer awareness class, conducted by the Health Club. What explanation will you give to the ideas given below?a) The disease cancer b) Reasons for cancer c) Treatment for cancer
Answer» a) Cells undergo uncontrolled division and spread to other tissues. b) Environmental factors, smoking, radiations, virus, hereditary factors alteration of genetic materials, chemical substances. c) Chemotherapy, surgery, radiation therapy

14009.

You are invited to prepare a presentation slide for the Cancer awareness class, conducted by the Health Club. What explanation will you give to the ideas given below?a) The disease cancer b) Reasons for cancer c) Treatment for cancer

Answer»

a) Cells undergo uncontrolled division and spread to other tissues.

b) Environmental factors, smoking, radiations, virus, hereditary factors alteration of genetic materials, chemical substances.

c) Chemotherapy, surgery, radiation therapy

Discussion

14010.	He's really upset because his fish died last night. A) cooled B) cracked C) croaked
Answer» Correct option is C) croaked

Discussion

14011.	Mary is writing ________ . A) in paper B) with a pen C) by a pen D) with pen
Answer» Correct option is B) with a pen

Discussion

14012.	I _____ an essay all day. A) write B) have been written C) am writing D) have been writing
Answer» Correct option is D) have been writing

Discussion

14013.	Who’s that girl? I can’t remember _____ her before. A) to see B) if I see C) seeing D) did I see
Answer» Correct option is C) seeing

Discussion

14014.	Write a paragraph in about 75 words on Character is destiny.
Answer» Character is destiny- Character has very important place in our life. An old saying that. Health is loss something is loss, welth is loss nothing is loss but character is loss anything is loss. He we can should that character save neet clean. We should done kinds of work due to this you became honourable in society.The man.which character is bad.Then all the men aheat this persion and he is fall down in other eyes. He we can say truth that character is density.

Discussion

14015.	He came home Iate........... the evening.(Choose the suitable preposition)(a) with(b) in(c) at(d) for
Answer» He came home Iate in the evening.

Discussion

14016.	Which eye defect is it in the given diagram ?
Answer» Myopia eye defect is it in the given diagram.

Discussion

14017.	What are the activities conducted by your School Health Club for promoting wellness?
Answer» Our School Health Club conducts many activities for promoting wellness. There is a trainer who gives the members yoga classes. Every day a few minutes are spent on physical exercises. Twice a week we have compulsory outdoor games at least for an hour. Once a month we go out trekking. We also have made it a regular practice to plant trees around the compound, or take care of the existing ones. As part of our program the members are asked not to overeat and oversleep. Whenever possible they are encouraged to swim. We also tell the members to come to the school on foot, and not in vehicles, if the distance is not much.

Discussion

14018.	Dear Mary, this is the first time _____ you a letter. A) of writing B) for me write C) that I had written D) I am writing
Answer» Correct option is D) I am writing

Discussion

14019.	I received a letter this morning _____ really upset me. A) who B) which C) where D) whose
Answer» Correct option is B) which

Discussion

14020.	People are always accusing me _____ being forgetful. A) for B) at C) of D) with
Answer» Correct option is C) of

Discussion

14021.	Some members of parliament voted _____ the proposal. A) against B) to C) in D) with
Answer» Correct option is A) against

Discussion

14022.	She agreed..........my proposal.(Choose the suitable preposition)(a) with(b) for(c) to(d) on
Answer» She agreed to my proposal.

Discussion

14023.	Which of the following statements are true for froth floatation process (for a concentration of sulphide ores)?A. Pine oil used as collectorsB. Cresol enhance non wettabillity of the mineral particlesC. `NaCN` selectively prevents `PbS` from coming to the froth but allows `ZnS` to come with the frothD. The mineral particles become wet by oils while the gangue particles by water.
Answer» Correct Answer - A::D In froth flotation process pine oil used as collector which enhance non-wettability of mineral particles. Cresol is froth stabilizers. `NaCN` used as depressant

Discussion

14024.	Nutrition is vital for life and health, and this kind of nutrition can seriously decrease one’s level of wellness, therefore it is a vital component of nursing. This kind of nutrition should be improved to maintain good health. Identify the type of nutrition. a) Good Nutrition b) Adequate nutrition c) Optimal nutrition d) Poor nutrition
Answer» Correct answer is d) Poor nutrition

Discussion

14025.	You _____ enter without a tie. A) aren’t B) can’t C) ought not D) weren’t
Answer» Correct option is B) can’t

Discussion

14026.	_____ you post this letter for me? A) Will B) Shall C) May D) Are
Answer» Correct option is A) Will

Discussion

14027.	He aimed his gun _____ a policeman, and fired. A) by B) to C) at D) of
Answer» Correct option is C) at

Discussion

14028.	Cigarettes _____ seriously damage your health. A) are B) do C) can D) were
Answer» Correct option is C) can

Discussion

14029.	He agreed _____ all the proposal we made. A) with B) on C) to D) at
Answer» Correct option is C) to

Discussion

14030.	Will you just run _____ the facts again? A) to B) with C) over D) off
Answer» Correct option is C) over

Discussion

14031.	He gets _____ 40 cigarettes a day. A) through B) off C) over D) with
Answer» Correct option is A) through

Discussion

14032.	Drug abuse brought _____ his death. A) over B) up C) at D) about
Answer» Correct option is D) about

Discussion

14033.	A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the Presence of air. Identify the metal and its ore and give the reaction involved
Answer» Metals low in activity series can be obtained by reducing their sulphides or oxides by heating. Mercury is the only metal that exists as liquid at room temperature. It can be obtained by heating cinnabar (HgS), the sulphide ore of mercury. The reactions are as follows: 2HgS(s) + 3O₂(g) + Heat-----> 2HgO(s) + 2SO₂(g) 2HgO(s) +Heat ------>2Hg(l) + O₂(g)

Discussion

14034.	DIET OR NUTRITION CAN ENHANCE THE PERFORMANCE OF A SPORTSPERSON
Answer» Diet can have a massive impact on athletic performance. Inadequate calories and nutrients can impair even the most conditioned athlete, while the right balance of energy and macronutrients will help every athlete perform their best. Dietary needs will vary based on an individual's age, gender, body type and sport. Talk with your physician, dietitian or coach to determine your unique nutritional requirements. Nutrition can help enhance athletic performance. An active lifestyle and exercise routine, along with eating well, is the best way to stay healthy. Eating a good diet can help provide the energy you need to finish a race, or just enjoy a casual sport or activity. You are more likely to be tired and perform poorly during sports when you do not get enough: Calories Carbohydrates Fluids Iron, vitamins, and other minerals Protein

14034.

DIET OR NUTRITION CAN ENHANCE THE PERFORMANCE OF A SPORTSPERSON

Answer»

Diet can have a massive impact on athletic performance. Inadequate calories and nutrients can impair even the most conditioned athlete, while the right balance of energy and macronutrients will help every athlete perform their best. Dietary needs will vary based on an individual's age, gender, body type and sport. Talk with your physician, dietitian or coach to determine your unique nutritional requirements.

Nutrition can help enhance athletic performance. An active lifestyle and exercise routine, along with eating well, is the best way to stay healthy.

Eating a good diet can help provide the energy you need to finish a race, or just enjoy a casual sport or activity. You are more likely to be tired and perform poorly during sports when you do not get enough:

Calories
Carbohydrates
Fluids
Iron, vitamins, and other minerals
Protein

Discussion

14035.	Read the following and answer any given below:Drugs and Alcohol Abuse:The use of drugs and alcohol is seen in the youth. Narcotic drugs like Opioids, Cannabinoids, Cocaine, Heroin, Marijuana and LSD are extracted from flowering plants and fungi. Opiods are drugs which are bound with specific opioid receptors in our central nervous system and gastro-intestinal tract. Opioids is dry latex which obtained by making fissure in unripe fruit. From Opioid pain relieving drugs like morphine and codeine are obtained. Morphines in a well-known pain reliever drug which generally acts on the nerve cells of small brain, obstructs pain and relieve the body from pain which functions as a stimulator. Opium inspires pleasant feelings. It draws out anxiety, fear and stress it leads to the addiction. Codeine is another type of alkaloid obtained from opium. That is a pain-reliever medicine. Sometimes it is used in the cough syrup too it cools down the reaction of cough. Relieve the stress felt in stomach and intestine. Heroin or diacetylmorphine is white crystalline material which is a pain reliever and is pleasure related drug. Smack (brown sugar) is an unclear by product of heroin. Cannabinoids are a group of chemical, which gets connected internally to cannabinoid receptors present in the brain. Cannabinoids, Bhang, Ganja are obtained from dried leaves and flowers of Cannabis indica are obtained from the inflorescence of the plant and dried leaves. Marijuana is obtained from Cannabis sativa . It is obtained from flower tops, leaves and resin of cannabis plants. The main active element of it is dell- Tetrahydro cannabino (THC). When this medicine is taken, the eye-pupils get didated. Urine is produced more quantity and the level of sugar in the blood increases.(i) What is known as pain reliever drug ? a. Marijuana b. Morphine c. Nicotine d. LSD(ii) Which substance draws out anxiety, fear and strees and inspires pleasant feeling ? a. Opium b. Codeine c. Morphine d. Marijuana(iii) Which medicine is used in cough syrup ? a. Morphine b. LSD c. Codeine d. Marijuana(iv) Bhang, GanJa and Charas are obtained from X and MariJuana is obtained from y . a. X = Cannabis indica, Y = Cannabis sativa b. X = Cannabis indica, Y = Erythroxylum coca c. X = Cannabis sativa, y = Cannabis indica d. X = Erythroxylum coca, Y = Cannabis indica(v) Assertion: Morphine is well known pain relieving drug.Reason: Which generally acts on the nerve cells of small brain, obstruct pain and relieve body from pain. a. Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is false d. Both assertion and reason are false.
Answer» (i) b. Morphine (ii) c. Morphine (iii) c. Codeine (iv) a. X = Cannabis indica, Y = Cannabis sativa (v) a. Both assertion and reason are true, and reason is the correct explanation of assertion.

14035.

Read the following and answer any given below:Drugs and Alcohol Abuse:The use of drugs and alcohol is seen in the youth. Narcotic drugs like Opioids, Cannabinoids, Cocaine, Heroin, Marijuana and LSD are extracted from flowering plants and fungi. Opiods are drugs which are bound with specific opioid receptors in our central nervous system and gastro-intestinal tract. Opioids is dry latex which obtained by making fissure in unripe fruit. From Opioid pain relieving drugs like morphine and codeine are obtained. Morphines in a well-known pain reliever drug which generally acts on the nerve cells of small brain, obstructs pain and relieve the body from pain which functions as a stimulator. Opium inspires pleasant feelings. It draws out anxiety, fear and stress it leads to the addiction. Codeine is another type of alkaloid obtained from opium. That is a pain-reliever medicine. Sometimes it is used in the cough syrup too it cools down the reaction of cough. Relieve the stress felt in stomach and intestine. Heroin or diacetylmorphine is white crystalline material which is a pain reliever and is pleasure related drug. Smack (brown sugar) is an unclear by product of heroin. Cannabinoids are a group of chemical, which gets connected internally to cannabinoid receptors present in the brain. Cannabinoids, Bhang, Ganja are obtained from dried leaves and flowers of Cannabis indica are obtained from the inflorescence of the plant and dried leaves. Marijuana is obtained from Cannabis sativa . It is obtained from flower tops, leaves and resin of cannabis plants. The main active element of it is dell- Tetrahydro cannabino (THC). When this medicine is taken, the eye-pupils get didated. Urine is produced more quantity and the level of sugar in the blood increases.(i) What is known as pain reliever drug ? a. Marijuana b. Morphine c. Nicotine d. LSD(ii) Which substance draws out anxiety, fear and strees and inspires pleasant feeling ? a. Opium b. Codeine c. Morphine d. Marijuana(iii) Which medicine is used in cough syrup ? a. Morphine b. LSD c. Codeine d. Marijuana(iv) Bhang, GanJa and Charas are obtained from X and MariJuana is obtained from y . a. X = Cannabis indica, Y = Cannabis sativa b. X = Cannabis indica, Y = Erythroxylum coca c. X = Cannabis sativa, y = Cannabis indica d. X = Erythroxylum coca, Y = Cannabis indica(v) Assertion: Morphine is well known pain relieving drug.Reason: Which generally acts on the nerve cells of small brain, obstruct pain and relieve body from pain. a. Both assertion and reason are true, and reason is the correct explanation of assertion. b. Both assertion and reason are true, but reason is not the correct explanation of assertion. c. Assertion is true but reason is false d. Both assertion and reason are false.

Answer»

(i) b. Morphine

(ii) c. Morphine

(iii) c. Codeine

(iv) a. X = Cannabis indica, Y = Cannabis sativa

(v) a. Both assertion and reason are true, and reason is the correct explanation of assertion.

Discussion

14036.	why does tooth decay start when the pH of mouth is lower than 5.5?
Answer» Tooth starts decaying when the pH of our mouth is lower than 5,5. This is because below this pH value, the medium of the mouth becomes more acidic clue to which tooth enamel corrodes at a faster rate.

Discussion

14037.	Why are cimetidine and ranitidine better antacids than sodium hydrogen carbonate ormagnesium or aluminium hydroxide?
Answer» Antacids such as sodium hydrogen carbonate, magnesium hydroxide, and aluminium hydroxide work by neutralising the excess hydrochloric acid present in the stomach. However, the root cause for the release of excess acid remains untreated. Cimetidine and rantidine are better antacids as they control the root cause of acidity. These drugs prevent the interaction of histamine with the receptors present in the stomach walls. Consequently, there is a decrease in the amount of acid released by the stomach. This is why cimetidine and rantidine are better antacids than sodium hydrogen carbonate, magnesium hydroxide, and aluminium hydroxide.

Discussion

14038.	DDT was sprayed on some insects as an experiment. Among them some died and some 3 survived A second generation was created by mating the survived ones. Again DDT sprayed. This process was repeated on five generations. The result is given in the table. Analyze it arid answer the following questions.GenerationsPercentage of survived insects110220330440550a) Interpret the result given in the table. b) What scientific explanation can you give for this result? c) What may be the result if the experiment is continued?
Answer» a) After each generation’s resistance to DDT increases, ie. variation increases. b) It is an example for Darwin’s theory of Natural selection. Due to struggle existence variations will arises and transmitted into next generations. c) The total population becomes resistant to DDT / Evolution of DDT resistant species.

14038.

DDT was sprayed on some insects as an experiment. Among them some died and some 3 survived A second generation was created by mating the survived ones. Again DDT sprayed. This process was repeated on five generations. The result is given in the table. Analyze it arid answer the following questions.GenerationsPercentage of survived insects110220330440550a) Interpret the result given in the table. b) What scientific explanation can you give for this result? c) What may be the result if the experiment is continued?

Answer»

a) After each generation’s resistance to DDT increases, ie. variation increases.

b) It is an example for Darwin’s theory of Natural selection. Due to struggle existence variations will arises and transmitted into next generations.

c) The total population becomes resistant to DDT / Evolution of DDT resistant species.

Discussion

14039.	DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.OR In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.
Answer» ● DDT being a non- biodegradable pesticide will enter the food chain from the first trophic level i.e Plankton. ● Non – biodegradable pesticides accumulate progressively at each trophic level. This phenomenon is known as biological magnification. ● HAWK will have the highest level of pesticide. OR A will represent more energy transfer as compared to C and E. B will represent more energy transfer as compared to D. When green plants are eaten by primary consumers, a great deal of energy is lost as heat to the environment, some amount goes into digestion and in doing work and the rest goes towards growth and reproduction. An average of 10% of the food eaten is made available for the next level of consumers. This loss of energy takes place at every trophic level. Alternatively accept - In accordance with 10% law of transfer of energy in a food chain only 10% of energy available at one trophic level is transferred to the next trophic level.

14039.

DDT was sprayed in a lake to regulate breeding of mosquitoes. How would it affect the trophic levels in the following food chain associated with a lake? Justify your answer.OR In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.

Answer»

● DDT being a non- biodegradable pesticide will enter the food chain from the first trophic level i.e Plankton.

● Non – biodegradable pesticides accumulate progressively at each trophic level. This phenomenon is known as biological magnification.

● HAWK will have the highest level of pesticide.

OR

A will represent more energy transfer as compared to C and E.

B will represent more energy transfer as compared to D.

When green plants are eaten by primary consumers, a great deal of energy is lost as heat to the environment, some amount goes into digestion and in doing work and the rest goes towards growth and reproduction. An average of 10% of the food eaten is made available for the next level of consumers. This loss of energy takes place at every trophic level.

Alternatively accept - In accordance with 10% law of transfer of energy in a food chain only 10% of energy available at one trophic level is transferred to the next trophic level.

Discussion

14040.	Choose an element from period 3 of modern periodic table that matches the description given below in each instance. Give reason for your choice. a. It has a similar structure to diamond. b. It has same valency as Lithium. c. It has variable valency and is a member of the Oxygen family
Answer» a. Silicon Reason: Tetrahedral structure OR Tetravalency or Four valeny and catenation OR Covalent bonding like carbon b. Sodium Reason: It has 1 valence electron like Lithium c. Sulphur Reason: it forms oxides SO₂ and SO₃

14040.

Choose an element from period 3 of modern periodic table that matches the description given below in each instance. Give reason for your choice. a. It has a similar structure to diamond. b. It has same valency as Lithium. c. It has variable valency and is a member of the Oxygen family

Answer»

a. Silicon

Reason:

Tetrahedral structure

OR

Tetravalency or Four valeny and catenation

OR

Covalent bonding like carbon

b. Sodium

Reason:

It has 1 valence electron like Lithium

c. Sulphur Reason: it forms oxides SO₂ and SO₃

Discussion

14041.	A velocity filter uses the properties of electric and magnetic field to select particles that are moving with a specifice velocity. Charged particles with varying speeds are directed into the filter as shown. The filter consistt of an electric field E and a magnetic field B, each of constant magnitude, directed perpendicular to each other as shown, The charge particles will experience a force due to electric field given by F = qE. If positively charged particles are used, this force is towards right. The moving particle will also experience a force due to magnetic field given by F = qvB. When forces due to the two fields are of equal magnitude, the net force on the particle will be zero, the particle will pass through centre with its path unaltered. The electric and magnetic fields can be adjusted t choose the specific velocity to be filtered. The efect of gravity can be neglected. Which of the following is true about the velocity filter shown in Fig,A. it would not work with negatively charged particles.B. wider the detector entrance, the narrower the range of speed detected.C. greater the distance d, the narrower the range of speed detected.D. The detector may not detect a charged particles with desired filter speed if its charge is too high.
Answer» Correct Answer - C Greater the distance d, larger would be the deviation produced in the path. Hence the particle will be unable to enter the detector for greater distance d, thus narrowing the range of speeds detected.

Discussion

14042.	A velocity filter uses the properties of electric and magnetic field to select particles that are moving with a specifice velocity. Charged particles with varying speeds are directed into the filter as shown. The filter consistt of an electric field E and a magnetic field B, each of constant magnitude, directed perpendicular to each other as shown, The charge particles will experience a force due to electric field given by F = qE. If positively charged particles are used, this force is towards right. The moving particle will also experience a force due to magnetic field given by F = qvB. When forces due to the two fields are of equal magnitude, the net force on the particle will be zero, the particle will pass through centre with its path unaltered. The electric and magnetic fields can be adjusted t choose the specific velocity to be filtered. The efect of gravity can be neglected. If the filter is set to detect particles of speed `v_(0)`, which one of the following diagrams best illustrates how the magnitude of the particle acceleration (a) depends on velocity v?A. B. C. D.
Answer» Correct Answer - A For `v=0, a=(qE)/(m)` for `v=v_(0), a=(qE-qvB)/(m)` or `a=(-qB)/(m)v+(qE)/(m)(y=-mx+c)` for `v=v_(0), a=0` for `vgtv_(0) =(qBv)/(m)-(qE)/(m)(y=mx-c)` hence graph (a) is correct.

Discussion

14043.	After failing his driving test four times, he finally ______ trying to pass. A) gave up B) gave away C) gave off D) gave in
Answer» Correct option is A) gave up

Discussion

14044.	The linear charge density on a ring of radius R is `lambda=lambda_0 sin (theta)` where `lambda_0` is a constant and `theta` is angle of radius vector of any point on the ring with x-axis. The electric potential at centre of ring is
Answer» Correct Answer - A All the charges are at a distance R. `:. V=(kq_("net"))/R=0`

Discussion

14045.	The velocity `-` time graph of a particle is as shown in figure A. It moves with a constant acceleration throughoutB. It moves with an acceleration of constant magnitude but changing direction at the end of every two secondC. The displacement of the particle is zeroD. The velocity becomes zero at `t=4` second
Answer» Correct Answer - B Obviously slope of `v-t` graph is changed at `t=2,4,6,`………in direction but it has constant magnitude.

Discussion

14046.	A man pushes a wall and fails to displace it. He does …….. (a) Negative work (b) Positive but not maximum work (c) No work at all (d) Maximum work
Answer» (c) No work at all

Discussion

14047.	Speed of snail as compared to speed of a car will be in units A. cm s-1 B. m s-1 C. km s-1 D. km h-1
Answer» The Correct option is A. cm s^-1

Discussion

14048.	45. A parallel plate capacitor consists of two circular metal plates, each of radius \( 1.38 cm \). A coating of Teflon \( 40 \mu m \) thick is applied to the inner surface of one plate to provide a dielectric layer, and then the plates are pressed together. Find the voltage to be applied between the plates of this capacitor to establish a charge of \( 0.5 nC \) on each plate. (Given: \( \varepsilon_{0}=8.854 \times 10^{-12} F / m \) and dielectric constant of Teflon \( =2 \) ).
Answer» Answer: Given: r= 1.38 x 10^-2 m D= 40x10^-6 m Q=0.5x10^-9C Area= πr² = ~6x10^-4 m² C = KE₀A/D = 2 x 8.8 x 10^-12 x 6 x 10^-4 /40 x 10^-6= 0.25 x 10^-9F V=Q/C. = 0.5 x 10^-9/0.25 x 10^-9 = ~2v We get 2 Volts as the answer buy the perfect answer is 1.92 volts as the value of C was taken as .25 but might come as .26 for some people but 2V can be considered as the answer.

14048.

45. A parallel plate capacitor consists of two circular metal plates, each of radius \( 1.38 cm \). A coating of Teflon \( 40 \mu m \) thick is applied to the inner surface of one plate to provide a dielectric layer, and then the plates are pressed together. Find the voltage to be applied between the plates of this capacitor to establish a charge of \( 0.5 nC \) on each plate. (Given: \( \varepsilon_{0}=8.854 \times 10^{-12} F / m \) and dielectric constant of Teflon \( =2 \) ).

Answer»

Answer:

Given: r= 1.38 x 10^-2 m

D= 40x10^-6 m

Q=0.5x10^-9C

Area= πr² = ~6x10^-4 m²

C = KE₀A/D = 2 x 8.8 x 10^-12 x 6 x 10^-4 /40 x 10^-6= 0.25 x 10^-9F

V=Q/C. = 0.5 x 10^-9/0.25 x 10^-9 = ~2v

We get 2 Volts as the answer buy the perfect answer is 1.92 volts as the value of C was taken as .25 but might come as .26 for some people but 2V can be considered as the answer.

Discussion

14049.	If a river flows from west to east with constant velocity of 1.0 m s-1 and a boat leaves south bank heading towards north with velocity of 2.40 m s-1, then resultant velocity of boat is A. 2.6 m s-1 B. 2.7 m s-1 C. 2.8 m s-1 D. 2.9 m s-1
Answer» A. 2.6 m s^-1

Discussion

14050.	A person is standing on a escalator which is moving up uniformly. Find out work done by the normal force acting on the man due to the cscalator while his mass is m and he gains height h due to movement of the escalator.A. zeroB. mghC. `-mgh`D. `(mgh)/(3)`
Answer» `W=N s cos theta` =mg

Discussion

Explore topic-wise InterviewSolutions in .

S1: E2O5 is less acidic than E2O3 (element E is belongs to 15th group).S2 : E2O3 acidic strength decreases down the group (element E is belongs to 15th group). (1) Both S1, &amp; S2 are true (2) Both S1 &amp; S2 are false(3) S1. is true &amp; S2 is false(4) S1 is false &amp; S2 is true

It was a wonderful holiday. I will always remember _____ the Niagara Falls.A) seeing B) to see C)saw D) see

Who’s the girl _____ blue _____ yellow hair? A) in / with B) with / with C) of / in D) on / of

Who’s the blonde girl _____ the first row? A) in B) on C) at D) over

Santosh deals.............. grains.(Choose the suitable preposition)(a) with(b) in(c) at(d) for

What is your idea of wellness?

Look at the Logo give below.Can you identify the words that appear with the entry ‘wellness’ in the logo?

You are invited to prepare a presentation slide for the Cancer awareness class, conducted by the Health Club. What explanation will you give to the ideas given below?a) The disease cancer b) Reasons for cancer c) Treatment for cancer

He's really upset because his fish died last night. A) cooled B) cracked C) croaked

Mary is writing ________ . A) in paper B) with a pen C) by a pen D) with pen

I _____ an essay all day. A) write B) have been written C) am writing D) have been writing

Who’s that girl? I can’t remember _____ her before. A) to see B) if I see C) seeing D) did I see

Write a paragraph in about 75 words on Character is destiny.

He came home Iate........... the evening.(Choose the suitable preposition)(a) with(b) in(c) at(d) for

Which eye defect is it in the given diagram ?

What are the activities conducted by your School Health Club for promoting wellness?

Dear Mary, this is the first time _____ you a letter. A) of writing B) for me write C) that I had written D) I am writing

I received a letter this morning _____ really upset me. A) who B) which C) where D) whose

People are always accusing me _____ being forgetful. A) for B) at C) of D) with

Some members of parliament voted _____ the proposal. A) against B) to C) in D) with

She agreed..........my proposal.(Choose the suitable preposition)(a) with(b) for(c) to(d) on

You _____ enter without a tie. A) aren’t B) can’t C) ought not D) weren’t

_____ you post this letter for me? A) Will B) Shall C) May D) Are

He aimed his gun _____ a policeman, and fired. A) by B) to C) at D) of

Cigarettes _____ seriously damage your health. A) are B) do C) can D) were

He agreed _____ all the proposal we made. A) with B) on C) to D) at

Will you just run _____ the facts again? A) to B) with C) over D) off

He gets _____ 40 cigarettes a day. A) through B) off C) over D) with

Drug abuse brought _____ his death. A) over B) up C) at D) about

A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the Presence of air. Identify the metal and its ore and give the reaction involved

DIET OR NUTRITION CAN ENHANCE THE PERFORMANCE OF A SPORTSPERSON

why does tooth decay start when the pH of mouth is lower than 5.5?

Why are cimetidine and ranitidine better antacids than sodium hydrogen carbonate ormagnesium or aluminium hydroxide?

Choose an element from period 3 of modern periodic table that matches the description given below in each instance. Give reason for your choice. a. It has a similar structure to diamond. b. It has same valency as Lithium. c. It has variable valency and is a member of the Oxygen family

After failing his driving test four times, he finally ______ trying to pass. A) gave up B) gave away C) gave off D) gave in

The linear charge density on a ring of radius R is `lambda=lambda_0 sin (theta)` where `lambda_0` is a constant and `theta` is angle of radius vector of any point on the ring with x-axis. The electric potential at centre of ring is

A man pushes a wall and fails to displace it. He does …….. (a) Negative work (b) Positive but not maximum work (c) No work at all (d) Maximum work

Speed of snail as compared to speed of a car will be in units A. cm s-1 B. m s-1 C. km s-1 D. km h-1

If a river flows from west to east with constant velocity of 1.0 m s-1 and a boat leaves south bank heading towards north with velocity of 2.40 m s-1, then resultant velocity of boat is A. 2.6 m s-1 B. 2.7 m s-1 C. 2.8 m s-1 D. 2.9 m s-1

A person is standing on a escalator which is moving up uniformly. Find out work done by the normal force acting on the man due to the cscalator while his mass is m and he gains height h due to movement of the escalator.A. zeroB. mghC. `-mgh`D. `(mgh)/(3)`

S1: E2O5 is less acidic than E2O3 (element E is belongs to 15th group).S2 : E2O3 acidic strength decreases down the group (element E is belongs to 15th group). (1) Both S1, & S2 are true (2) Both S1 & S2 are false(3) S1. is true & S2 is false(4) S1 is false & S2 is true

Who’s the girl _ blue _ yellow hair? A) in / with B) with / with C) of / in D) on / of