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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 20001. |
The branch of medical science that is concerned with the study of diseases and their spread is called?1. Oncology2. Toxicology3. Virology4. Epidemiology |
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Answer» Correct Answer - Option 4 : Epidemiology The correct answer is Epidemiology.
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| 20002. |
Rewrite the following sentences by using the correct homophones for the underlined words:1. Mr. Sathish was fined a sum of Rs. 20,000 as the prosecutor found the witness who could collaborate with the allegations.2. Rather than reading novels, Vishal prefers to hear the story aurally from his brother Kannan3. The trekkers began the assent on to the hill top immediately after the sunrise.4. A boy near the navel officer was injured by the mob.5. The village people saw a peasant near the farm. |
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Answer» 1. Mr. Sathish was fined a sum of Rs. 20,000 as the prosecutor found a witness who could corroborate with the allegations. 2. Rather than reading novels, Vishal prefers to hear the story orally from his brother Kannan. 3. The trekkers began the ascent on to the hill top immediately after the sunrise. 4. A boy near the naval officer was injured by the mob. 5. The village people saw a pheasant near the farm. |
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| 20003. |
Fill in with the right confusable to make a meaningful sentence1. A ………… at the sweet stall aroused their desire to have rasagullas. But they left in a ……… when they heard that rasagulla’s were out of stock, (pique/peek) 2. During the ……… of King Chandrakanth there used to be heavy ……… (reign/rains) 3. The ……… employee was ……… to answer to his senior officer, (reluctant/reticent) 4. I have ……… him since childhood before I saw him in the opening ……… (scene/seen) 5. The ………… of cattle ……… the roar of a lion and trembled with fear, (heard/herd) |
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Answer» 1. peek/pique 2. reign/rains 3. reticent/reluctant 4. seen/scene 5. herd/heard |
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| 20004. |
The study of phenomena at very low temperatures is called: w) heat transfer x) morphology y) crystallography z) cryogenics |
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Answer» The study of phenomena at very low temperatures is called CRYOGENICS. |
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| 20005. |
The branch of medical science which is concerned with the study of disease as it affects a community of people is called:w) epidemiology x) oncology y) paleontogy z) pathology |
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Answer» EPIDEMIOLOGY |
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| 20006. |
When a ray of light passes through a glass prism it suffers two refractions. During these refractions the ray bends :(a) Away from the base in both cases(b) Towards the base in both cases(c) Towards the base in first case and away from the base in second case(d) Away from the base in first case and towards the base in second case |
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Answer» Correct answer is (b) Towards the base in both cases |
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| 20007. |
Fill in with the right confusable to make a meaningful sentence1. Grandma’s ……… regarding the treatment of venomous snake bites using the ancient ……… is interesting to hear, (antidotes/anecdotes) 2. Until the Government ………… the lands, the land owners cannot ……… its value. (apprise/appraise) 3. The police Inspector asked Raju to ……… his reason in the FIR to ……… the person he was complaining about, (indict/indite) 4. The Captain was ……… in implementing an ………… plan to trap the terrorists.(invidious/insidious) 5. The farmer exalted his son for his ……… ideas which resulted in a bountiful harvest, (ingenious/ingenuous) |
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Answer» 1. anecdotes/antidotes 2. appraise/ apprise 3. indite/indict 4. insidious/invidious 5. ingenuous/ingenious |
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| 20008. |
What creature do the Galapagos Islands take their name from? |
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Answer» Creature do the Galapagos Islands take their name from TORTOISE. |
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| 20009. |
Which prefix is often used with scientific terms to indicate that something is the same, equal or constant?w) iso (pron: eye-so) x) mega y) meta z) quasi |
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Answer» ISO prefix is often used with scientific terms to indicate that something is the same, equal or constant. |
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| 20010. |
The radioactive element most commonly detected in humans is:w) potassium-40 x) cobalt-60 y) iodine-131 z) plutonium-238 |
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Answer» POTASSIUM-40. |
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| 20011. |
Radioisotopes which are used in medical diagnosis are known as what?w) tracers x) silver bullets y) markers z) dyes |
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Answer» Radioisotopes which are used in medical diagnosis are known as TRACERS. |
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| 20012. |
What is the only venomous Britis |
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Answer» ADDER only venomous British snake. |
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| 20013. |
What is the name denoting plants that seasonally shed all their leaves? |
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Answer» ZECIDUOUS denoting plants that seasonally shed all their leaves. |
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| 20014. |
The largest breeder reactor built to date is located where?w) USSR x) Japany) France z) United States |
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Answer» The largest breeder reactor built to date is located in FRANCE. |
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| 20015. |
The principle behind a breeder reactor isw) U-235 undergoes fission. x) U-238 is converted to Pu-239, which undergoes fission. y) Deuterium undergoes fission. z) Cobalt-60 undergoes fission. |
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Answer» U-238 IS CONVERTED TO Pu-239, WHICH UNDERGOES FISSION. |
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| 20016. |
What is shed when you desquamate? |
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Answer» SKIN or EPIDERMAL CELLS. |
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| 20017. |
What is another name for the Paleolithic Age? |
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Answer» THE STONE AGE |
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| 20018. |
The Oklo reactor in Gabon, Africa, is significant because it:w) was the first man-made reactor. x) was a natural fission reactor. y) was the first reactor used to generate electricity. z) produced the most electricity in a single year. |
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Answer» WAS A NATURAL FISSION REACTOR. |
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| 20019. |
In the United States, the units of measure for the potential biological risk associated with exposure to ionizing radiation are the rem and millirem. What comparable units are used in the metric system? |
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Answer» SIEVERTS or MILLISIEVERTS |
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| 20020. |
When CO2 (carbon dioxide) is dissolved in water, it yields a solution that:a) has acidic properties b) has basic properties c) is neutral |
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Answer» HAS ACIDIC PROPERTIES |
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| 20021. |
One metal dissolved in another is calledw) an alloy x) an assay y) a mineral z) a ceramic |
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Answer» One metal dissolved in another is called AN ALLOY . |
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| 20022. |
What are the only places that dogs have sweat glands? |
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Answer» NOSE AND PAWS. |
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| 20023. |
What colorless, pungent gas is often dissolved in water to yield a solution that is used as a biological preservative? |
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Answer» FORMALDEHYDE |
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| 20024. |
What body function are rats unable to do which makes them extra vulnerable to poison? |
| Answer» VOMIT are rats unable to do makes them extra vulnerable to poison , | |
| 20025. |
Identification of `+m` & `-m` groups : If the first atom of the group has lone pair or negative charge shows `+m` effect. `+m` group increases electron density at ortho and para position of benzene ring. If the group has vacant `p-`orbital on first atom, also a multipal bonded group in which second atom is more electronegative than the first then it shows `-m` effect. `-m` group decreases electron density of ortho and para position of benzene ring. Identify which of following group/s show `-m` effect when attached with benzene ring.A. `-NH_(2)`B. `-O^(ɵ)`C. `-overset(O)overset(||)(C)-overset(O)overset(||)(C)-CH_(3)`D. `-overset(O)overset(||)(C)-NH-CH_(3)` |
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Answer» Correct Answer - C::D `-oversetoverset(O)(||)C-NH-CH_(3)` and `-oversetoverset(O)(||)C-oversetoverset(O)(||)C-CH_(3)` do not contain lone pair of electron negative charge on first atom. |
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| 20026. |
One gram of a metallic chloride was found to contain 0.835 g of chlorine. Its vapour density is 85.5.If its moleculars formula is `M_(x)``Cl_(y)`,then what is value of (x+y) ? |
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Answer» Correct Answer - 5 `M(x)Cl_(y) = MCl_(y)` (valency of `Cl = 1`) Molar mass of `M_(x)Cl_(y) = 85.5 xx 2 = 171 g//mol` `("Mass of chlorine")/("Mass of metalic chlorine") = (0.835)/(1) = (35.5 y)/(171)` On solving `y = 4` |
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| 20027. |
The graph of compressibility factor (Z) vs. P for one mole of a real gas is shown in following diagram. The graph is plotted at constant temperature 273K. If the slope of graph at very high pressure `((dZ)/(dP))` is `((1)/(2.8))atm^(-1)` , then calculate volume of one mole of real gas molecules (in L/mol) Given : `N_(A)=6xx10^(23)` and `R=(22.4)/(273)L atmK^(-1)mol^(-1)` |
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Answer» Correct Answer - 2 `Z = 1 + (Pb)/(Rt)` (high pressure) `(dZ)/(dP) = (b)/(RT) = (1)/(2.8)` `b = (RT)/(2.8) = (22.4)/(2.8) = 4(N_(A) xx (4)/(3)pir^(3))` `(N_(A) xx (4)/(3)pir^(3)) =` Volume of `1` mol gas molecules |
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| 20028. |
Which of the following statements expresses information use of language?1. Get out of my class.2. Why are you so late?3. I request my students to be punctual4. She is very caring and cooperative |
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Answer» Correct Answer - Option 4 : She is very caring and cooperative 1) Get out of my class. → expresses giving order. 2) Why are you so late? → expresses asking question. 3) I request my students to be punctual → expresses a request is made. 4) She is very caring and cooperative → expresses information use of language. Hence, She is very caring and cooperative is the correct answer. |
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| 20029. |
The vitamin that is found in citrus food such as lemon and oranges is:1. vitamin C2. vitamin A3. vitamin B4. vitamin D |
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Answer» Correct Answer - Option 1 : vitamin C The correct answer is Vitamin C.
Some of the vitamins and their source are listed below:
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| 20030. |
What is the better known name for the deadly poison prussic acid? |
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Answer» CYANIDE or HYDROGEN CYANIDE |
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| 20031. |
A He-atom is de-excited from and energy level "n" to ground state to emit two consecutive photons of wavelength `1085Å`. Then n will be-A. 3B. 4C. 5D. 6 |
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Answer» Correct Answer - C `E=-13.6 z^(2)//n^(2) =-(13.6xx4)/(n^(2)) =-(54.4)/(n^(2)) eV` in coming to ground state `DeltaE=E_(0) -E_(i)` `=((-54.5)/(n^(2))) -((-54.4)/(1))` `=54.4 (1-(1)/n^(2)) eV` But `DeltaE =E_(pb) =(hc)/(lambda_(1)) +(hc)/(lambda_(2))` `=12400 ((1)/(1085) +(1)/(304)) eV` From (1) & (2) `54.4(1-(1)/(n^(2))) =52.08` `rArr 1-(-1)/(n^(2)) =0.96 rArr n=5` |
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| 20032. |
Two waves `Y_(1) =A " cos " (0.5 pi x -100 pi t)` and `Y_(2)`= Acos (0.46`pi x-92pi t)` are treavelling in a pipe along x-axis. (y and x are in metre). How many times in a second does a stationary any observer hear loud sound (maximum intensity) ?A. 4B. 8C. 10D. 12 |
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Answer» Correct Answer - A Hence `omega_(1) =100pi " and " omega_(2) =92 pi` Hence `V_(1) =(100pi)/(2pi) =50 Hz` `"and "V_(2) =(92pi)/(2pi)=46 Hz` `:.` Number of beats per second `=v_(1)-v_(2)=50 -46 =4` |
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| 20033. |
A gas mixture consists of molecules of type 1,2 and 3, with molar masses `m_(1) gt m_(2) gt m_(3).V_(rms) " and "overset(-)(K)` are the r.m.s. speed and average kinetic energy of the gases. Which of the following is true-A. `(V_(rms))_(1) lt(V_(rms))_(2)lt(V_(rms))_(3) & (barK)_(1)=(barK)_(2)=(barK)_(3)`B. `(V_(rms))_(1) =(V_(rms))_(2)=(V_(rms))_(3) & (barK)_(1)=(barK)_(2)gt(barK)_(3)`C. `(V_(rms))_(1) gt(V_(rms))_(2)gt(V_(rms))_(3) & (barK)_(1)lt(barK)_(2)gt(barK)_(3)`D. `(V_(rms))_(1) gt(V_(rms))_(2)gt(V_(rms))_(3) & (barK)_(1)lt(barK)_(2)lt(barK)_(3)` |
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Answer» Correct Answer - A `V_("rms")prop (1)/(sqrt(M))rArr(v_("rms"))lt(v_("rms"))_(2)lt(v_("rms"))_(3)` also in mixtrue temperature of each gas will be same hence kinetic energy also remains same. |
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| 20034. |
Two boys stand close to a long straight metal pipe and at some distance from each other. One boy fires a gun and the other hears two explosions , with a time interval of one second between them. If the velocity of sound in metal is 3630 m `s^(-1)` and in air is 330 m`s^(-1)`, the distance between the two boys isA. 36.3 mB. 726 mC. 363 mD. 3630 m |
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Answer» Correct Answer - C `(e)/(330)-(e)/(3630) =1` `(3630 -330) e= 330 xx 3630 " or "e =(330xx3630)/(3300) m=363 m` |
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| 20035. |
Given below are two statements labelled as Assertion (A) and Reason (R) Assertion (A): On Increasing the current sensitivity of a galvanometer by increasing the number of turns, may not necessarily increase its voltage sensitivity. Reason(R ): The resistance of the coil of the galvanometer increases on increasing the number of turns. Select the most appropriate answer from the options given below: (i) Both A and R are true and R is the correct explanation of A (ii) Both A and R are true but R is not the correct explanation of A. (iii) A is true but R is false. (iv) A is false and R is also false. |
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Answer» Answer is (i) Both A and R are true and R is the correct explanation of A When we increase current sensitivity by increasing no. of turns, then resistance of coil also increases. So increasing current sensitivity does not necessarily imply that voltage sensitivity will increase because Vg = \(\frac{I_g}{R}\) ∴ if Ig ↑ & R ↑ by different amounts, then Vg may increase or decrease. |
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| 20036. |
The series `RLC` circuit in resonance is called:A. selector circuitB. rejector circuitC. amplifier circuitD. oscillator circuit |
| Answer» Only for resonating frequency circuit is able to drive appreciable current. So we can use these type of circuit in tunning of radio and TV for selecting perticular frequency sent by perticular source. | |
| 20037. |
Given below are two statements labelled as Assertion (A) and Reason (R)Assertion(A): A proton and an electron, with same momenta, enter in a magnetic field in a direction at right angles to the lines of the force. The radius of the paths followed by them will be same.Reason(R): Electron has less mass than the proton.Select the most appropriate answer from the options given below: (i) Both A and R are true and R is the correct explanation of A (ii) Both A and R are true but R is not the correct explanation of A. (iii) A is true but R is false. (iv) A is false and R is also false. |
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Answer» Answer is (ii) Both A and R are true but R is not the correct explanation of A. we know \(\frac{mv^2}{r}\) = Bqvsin θ = Bqv sin θ Centripetal force = magnetic Lorentz force sin θ = sin 90θ = 1 (∠ between \(\overrightarrow{V}\) & \(\overrightarrow{B}\) = 90°) \(\frac{mv^2}{r}\) = Bqv \(\frac{mv}{r}\) = Bq \(r=\frac{mv}{Bq}=\frac{p}{Bq}=\frac{linear\,momentum}{Bq}\) Since = \(\frac{p}{Bq}\) Given p, B are same Also q for proton & electron is same except its sign ∴ Radius is same. So statement is correct but reason is not the correct explanation of the given assertion. |
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| 20038. |
Given below are two statements labelled as Assertion (A) and Reason (R) Assertion(A): A magnetic needle free to rotate in a vertical plane, orients itself (with its axis) vertical at the poles of the earth. Reason (R): At the poles of the earth the horizontal component of earth’s magnetic field will be zero. Select the most appropriate answer from the options given below: (i) Both A and R are true and R is the correct explanation of A (ii) Both A and R are true but R is not the correct explanation of A. (iii) A is true but R is false. (iv) A is false and R is also false. |
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Answer» Answer is (i) Both A and R are true and R is the correct explanation of A The given statement is correct and reason is the correct explanation of the above statement. At poles, magnetic needle orients itself vertically because horizontal components of earth’s field is zero there. |
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| 20039. |
Given below are two statements labelled as Assertion (A) and Reason (R) Assertion (A): An electron has a high potential energy when it is at a location associated with a more negative value of potential, and a low potential energy when at a location associated with a more positive potential. Reason (R): Electrons move from a region of higher potential to region of lower potential. Select the most appropriate answer from the options given below: (i) Both A and R are true and R is the correct explanation of A (ii) Both A and R are true but R is not the correct explanation of A. (iii) A is true but R is false. (iv) A is false and R is also false. |
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Answer» Answer is (iii) A is true but R is false. Statements correct but reason is wrong because electrons move from a region of low potential to high potential. |
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| 20040. |
Given below are two statements labelled as Assertion (A) and Reason (R) Assertion (A): To increase the range of an ammeter, we must connect a suitable high resistance in series to it. Reason (R): The ammeter with increased range should have high resistance.Select the most appropriate answer from the options given below: (i) Both A and R are true and R is the correct explanation of A (ii) Both A and R are true but R is not the correct explanation of A. (iii) A is true but R is false. (iv) A is false and R is also false. |
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Answer» Answer is (iv) A is false and R is also false. as both statements are false. To increase the range of an ammeter, suitable low R (or shunt) should be connected in parallel to it. The ammeter with increased range has low resistance. |
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| 20041. |
A beam of electron accelerated by a large potential difference `V` is mode of strike a metal target of produce X-ray . For which of the following value of `V` , will the resulting X-ray have the lower minimum wavelength?A. `10 kV`B. `20kV`C. `30 kV`D. `40 kV` |
| Answer» `lambda_(min)=(hc)/(cV)` | |
| 20042. |
Two wheels, each marked with a dot on its rim, are mounted side by side. Initially the dots are alinged and wheels are at rest. One of the wheels is given a constant angular acceleration of `(pi//2) rad//sec^(2)` and the other wheel is given a constant angular acceleration `(pi//4)rad//sec^(2)`. Both acceleration are in the same direction. Find the time (in s) after which the two dots will becomes alingned again for the first time. |
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Answer» Correct Answer - 4 Dots will be aligned again after time `t`, if the slower disc makes on rotation less than other disc. `2pin(1/2)(pi/2)t^2`……….i and `2pi (n-1)=(1/2)(pi/4)t^2`……….ii By dividing `n/((n-1))=2/1` or `n=2` From eqn i `t=4s`. |
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| 20043. |
Which of the following water forms very thin films around soil particles and is not available to the plant? a) Hygroscopic water b) Capillary water c) Gravitational water d) Unavailable water |
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Answer» Correct option: a) Hygroscopic water |
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| 20044. |
In a certain system of absolute units the acceleration produced by gravity in a body falling freely is denoted by `3`, the kinetic energy of a `272.1 kg` shot moving with velocity `448` metres per second is denoted by `100`, and its momentum by 10. the unit of mass isA. 544.2 kgB. 54.42 kgC. 5442 kgD. None of these |
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Answer» Correct Answer - A By solving above equation `M_(1)=544.2 M` `=544.2 kg` |
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| 20045. |
In a certain system of absolute units the acceleration produced by gravity in a body falling freely is denoted by `3`, the kinetic energy of a `272.1 kg` shot moving with velocity `448` metres per second is denoted by `100`, and its momentum by 10. The unit of length isA. 15.36 mB. 153.6 mC. 68.57 mD. None of these |
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Answer» Correct Answer - B Let unit of length, time and mass be `L_(1), T_(1)` and `M_(1)` respectively. According to question `9.8 LT^(-2) =3L_(1)T_(1)^(-2)` `1/2 (272.1)(448)^(2) ML^(2)T^(-2)=100 M_(1)L_(1)^(2)T_(1)^(-2)` `(272.1)(448) MLT^(-1)=10 M_(1)L_(1)T_(1)` bu solving above equation `L_(1)=153.6 L` `=153.6 m` |
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| 20046. |
In a certain system of absolute units the acceleration produced by gravity in a body falling freely is denoted by `3`, the kinetic energy of a `272.1 kg` shot moving with velocity `448` metres per second is denoted by `100`, and its momentum by 10. The unit of length isA. 68.57 sB. 0.6857 sC. 6.857 sD. None of these |
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Answer» Correct Answer - C By solving above equation `T_(1)=6.857 T` `=6.857 s` |
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| 20047. |
Woolly apple aphid (Eriosoma lanigerum) can be controlled biologically by use of a) Aphelinus mali b) Rodolia cardinalis c) Aphytisdia spiditis d) Trichogramma minutum |
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Answer» Correct option: a) Aphelinus mali |
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| 20048. |
Heating pyrites in air to remove sulphur is known asA. CalcinationB. FluxingC. SmeltingD. Roating |
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Answer» Correct Answer - D `S + O_(2) to SO_(2)` |
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| 20049. |
Name three ores which are concentrated by froth flotation process. What is a depresent ?A. Halide oresB. Phosphate oresC. Native oresD. Sulphide ores |
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Answer» Correct Answer - d Metal sulphide ores are concaltrated by flotation , a process that exploits differences in the ability of water and oil to wet surfaces of the mineral and the gangua .In this process , the ore is finely grond to give a thick pulp contitaing `30 - 40%` solides .A small amount of pine on oleic acid or cresylic acid ,which cause frothing (foaming) is added to the pulp .The substance, which is capable of retelling water fron on the surface of mineril and thus promotes attachment of mineral particles to air bubbles is also addedd to the .pulp. This substance is called collector sodium ethyl xanthate.`C_(2)H_(5)OCS_(2) Na` , is commonly used as a collectro in floting copper,lead and nickel sulphideores . Another substance called activator `(e.g.CuSO_(4))` , which helps in the acvtion of collector can also be added .The entire meterial i.e.,The mixture pulp,frother , and collector is taken in a container and then air is blown .Air bubbles adghere to the mineral particles and make them float in the form of a froth which is collacted , the gangue is wetted by water and sinks The process of froth flotation is videly employed to concantrate sulphde ores.However , many qaside ores can also be concentrated by this process |
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| 20050. |
What is the thermodynamic consideration in the choice of a reducing agent in metallurgy ? |
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Answer» Highly electropositive elements are obtained by the electrolysis of their oxides, hydroxides or chlorides in fused state. Extraction of less electropositive metals say `Cr,Mn,Cu,Ca,Ni` etc. can be done by heating their oxides with strong reducing agents, e.g. , `CO,CO + H_(2) ,Na,Al,Mg` etc. The oxides of less electropositive metals like `Pb,Fe,Zn,Sb`, and `Cu` are reduced by strongly heating with coal or coke. |
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