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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
18-iWhat is the valency of magnesium with atomic number 12 and sulphur with atomicnumber 16?a. 2 and 2b. 2 and 6c. 2 and 4d. 6 and 2 |
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Answer» K=2l=8m=2 the valency of MAGNESIUM is 2 then SULPHUR k= 2l=8m=6 therefore the answer is 2and 6 |
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| 2. |
What is electronegativityand it's trend if exists? |
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Answer» Answer: ELECTRONEGATIVITY, symbolized as χ, is the tendency of an ATOM to attract shared electrons to itself. An atom's electronegativity is affected by both its ATOMIC NUMBER and the distance at which its valence electrons reside from the charged nucleus. Electronegativity is defined as the tendency of an atom participating in a covalent bond to attract the bonding electrons. |
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| 3. |
vapour pressure of pure c6h6 is 640mm.2.2g of non volatile(hg) solute is added 40g c6h6 vapour pressure of solution is 600mm calculate molar mass of solute |
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| 4. |
What’s MoreActivity 1.1 Write the nuclear reactions involved in the synthesisof each of the following new elements:a. Curium (Z = 96) was formed by reacting Pu – 239 with alphaparticles 42He. It has a half-life of 162 days.b. Mendelevium (Z = 101) was formed by reacting En-253 with alphaparticles.c. Meitnerium (Z = 109) was formed by cold fusion which involves thecombination of Bi and Fe nuclides at ordinary temperature Do you think this answers are correct ?a. 23994Pu + 42He → 24296Cm + 10n Cmb. 2599En + 42He → 25101Mv + 10n Mvc. 20983Bi + 5826Fe → 266109Mt + 10n |
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| 5. |
Two daily life example for displacement reaction with Equation? |
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Answer» Explanation: 1. zinc DISPLACING irons IONS from IRON (ll) sulfate solution. 2. nickel displacing copper from copper (ll) nitrate solution. hope it will help you |
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| 6. |
Discuss the character features of amino acid |
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Answer» Answer: CHARACTERISTICS of amino acids: Amino acids are BASIC units of protein. All amino acids have at LEAST one ACIDIC carboxylic acid (-COOH) group and one basic amino (-NH2) group. Amino acids are colorless, crystalline solid. They are soluble in water and insoluble in organic SOLVENT. |
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| 7. |
The -ve charged particle is calleda) Anion b)cationc)Radical d)atom |
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Answer» a) anion Explanation: because -ve have negative CHARGE and - charge ALSO call anion. |
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| 8. |
CH2 = CH2 istype of hydrocarbon. (a saturated, an unsaturated) |
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Answer» CH2=CH2 is a TYPE of UNSATURATED compound. please MARK as BRAINLIEST |
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| 9. |
The -ve charged particle is called |
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Answer» Electron Explanation:
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| 10. |
Happy birthday billitum jio.unlimited party kaha hai...shrutii ka khyal rakhna nikk and mai aur meri family dua karenge vo jald hi thik ho ....what is photominical properyy ? |
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| 11. |
What is mean by acidosis and alkalosis? |
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Answer» HOPE it was helpful Explanation: Acidosis is a condition in which there is too much acid in the BODY fluids. It is the OPPOSITE of alkalosis (a condition in which there is too much base in the body fluids). |
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| 12. |
What is crystal lactic ? |
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Answer» Explanation: Crystal LACTIC is the SYMMETRICAL three-dimensional ARRANGEMENT of atoms inside a crystal. |
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| 13. |
for the compound CH3 CH2 CH2 OH identify the functional group and hybradization of each carbon atom |
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Answer» Forbidden You don't have PERMISSION to ACCESS /ncerts/l/kech205.pdf on this server. Explanation: |
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| 14. |
Write the structure of 2 cyanobenzoic acid |
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Answer» I do not CARE |
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| 15. |
Why does the milkiness disappear on passing excess of carbondioxide to lime water?Please answer fast guys.... |
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Answer» Answer: When carbon dioxide is BUBBLED in excess, the milkiness of LIME water DISAPPEARS due to FORMATION of BICARBONATE which is soluble in water. |
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| 16. |
What are the microminerals? at least tell me two of its kind |
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Answer» Microminerals are those minerals NEEDED in less than 100 mg QUANTITIES. Microminerals include IRON, zinc, copper, iodine, fluoride, CHROMIUM, cobalt, selenium, manganese, and MOLYBDENUM. |
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| 17. |
I'm actually totally enjoying this lockdown? how many of you are enjoying it too? |
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Answer» Answer: Me too I am ALSO ENJOYING this lockdown but I can't MEET my FRIENDS :-( . |
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| 18. |
What are various ways to reduce deforestation |
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Answer» You can contribute to the EFFORTS against deforestation by doing these EASY steps: Plant a Tree where you can. Go paperless at home and in the office. Buy recycled products and then recycle them again. Buy certified WOOD products. ... SUPPORT the products of companies that are committed to reducing deforest Explanation: please mark as brainlist bro please |
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| 19. |
Explain why the halogen derivatives are insoluble in water |
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Answer» Answer: All the halogen DERIVATIVES of hydrocarbons are polar in nature but they are insoluble in water, because they are UNABLE to form hydrogen bonds already present in water. ... Halogens are more electronegative than carbon, due to which bonded electrons get shifted TOWARDS the halogen ATOM making the bond polar. HOPE IT HELPS!!! |
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| 20. |
____________ ropes are strong, flexible and elastic when compared to jute and cotton ropes.RayonNylonAcrylicPolyester |
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Answer» NYLON ropes Hope this HELPS you.... CHEERS!!! |
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| 21. |
Lady prefers _____"X"____blanket over wool blankets because "X" blankets are cheap, light in weight, more durable and are available in a variety of colours and designs. They can be easily washed at home.Identify "X"?NylonPolyesterAcrylicRayon |
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Answer» Answer: U should be my friend request for a few DAYS to get the FOLLOWING SENTENCES in indirect speech |
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| 22. |
16. What do you understand by the term mole. |
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Answer» A mole is defined as 6.02214076 × 1023 of some CHEMICAL UNIT, be it atoms, molecules, ions, or others. The mole is a convenient unit to USE because of the great NUMBER of atoms, molecules, or others in any substance. |
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| 23. |
on the basis of molecular theory explain why gases have neither definite shape not different volume . |
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Answer» Explanation: Gases do not have a definite SHAPE or volume because the molecules in gases are very loosely packed, they have large INTERMOLECULAR spaces and HENCE they MOVE around. The force of ATTRACTION between molecules is also very less, as a result gases acquire any shape or any volume |
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| 24. |
Which are the two factors that influence solubility |
Answer» Answer:There are TWO DIRECT factors that affect SOLUBILITY: temperature and pressure. Temperature AFFECTS the solubility of both solids and gases, but pressure only affects the solubility of gasesExplanation: I hope help youPlease mark me as BRAINLIST |
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| 25. |
On the basis of molecular theory explain why liquid have definite volume but no definite shape. |
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Answer» Answer: In a liquid, the PARTICLES are still in close CONTACT, so LIQUIDS have a definite volume. However, because the particles can move about each other rather FREELY, a liquid has no definite shape and takes a shape dictated by its container. |
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| 26. |
Find the mass of benzene that is obtained from the acetylene that takes up a volume of 13.44 L at STP. The yield of the reaction is 80%. |
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Answer» this is your ANSWER bro reaction |
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| 28. |
Q.No:1A reaction between 0.01M K2S2O3 and 0.01M KI is an example ofOA) pseudo first order reactionOB) pseudo second order reactionOC) second order with equal initial concentrationOD) zero order reaction |
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Answer» hi Explanation: |
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| 29. |
AsName tha.Anode ray tubeb. Cathode ray tubePerforated cathode ray tuC.d. Magnetic ray tube |
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Answer» Answer: An anode ray (also positive ray or canal ray) is a beam of positive ions that is CREATED by certain types of gas-discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886. Later WORK on anode rays by Wilhelm Wien and J. J. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a PREVIOUSLY unknown negatively charged particle, which was later named the electron. Cathode-ray tubes (CRTs) use a FOCUSED beam of electrons deflected by electric or magnetic fields to render an image on a screen. Goldstein used a gas-discharge TUBE which had a perforated cathode. ... Goldstein called these positive rays Kanalstrahlen, "channel rays" or "canal rays", because they were produced by the holes or channels in the cathode. The process by which anode rays are formed in a gas-discharge anode ray tube is as follows. They were first observed in 1869 by German physicist Julius Plücker and Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays. ... Cathode-ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen. |
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| 30. |
Biochemistry isThe study of the chemicalO substances and processes thatoccur in plants.The study of the chemicalO substances and processes thatoccur in animals.The study of the chemicalO substances and processes thatoccur in microorganism.all of these. |
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Answer» Answer: the BRANCH of SCIENCE concerned with the chemical and physico-chemical PROCESSES and substances that OCCUR within LIVING organisms. Explanation: answer is The study of the chemical O substances and processes that occur in animals. |
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| 31. |
What volume of oxygen is needed to burn 56 liters of benzene at STP? |
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Answer» Answer: At STP, ONE mole of a gas OCCUPIES 22.4 liters. So, 0.374 x 22.4 is APPROXIMATELY 8.377 liters. This is the volume of oxygen NEEDED at STP. |
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| 32. |
2 moles of N2, gas at STP has |
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Answer» Answer: ONE mole of GAS has a VOLUME of 22.4L at STP. Since there are two moles of gas PRESENT, the volume is doubled. |
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| 33. |
Which of the following is the relationbetween hydrogen and hydroxyl ionconcentration of pure water?OValue of hydrogen ion concentrationis greaterOValue of hydroxyl ion concentrationis greaterO They are both always the sameO The concentrations keep changing |
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Answer» Answer: In an acidic SOLUTION, the value of HYDROGEN ion CONCENTRATION is greater than that of HYDROXYL ion concentration. It can be REPRESENTED as [H+]>[OH-]. Explanation: |
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| 34. |
Which one is correct?A solution is a homogenous mixtureof two substancesA solution is a homogenous mixtureof three substancesA solution is a homogenous mixtureof two or three substancesA solution is a homogenous mixtureof two or more substances |
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Answer» Answer: A SOLUTION is a homogenous mixture of two or THREE SUBSTANCES |
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| 35. |
Q.No : 16A second order reaction involving both reactants initially present at 0.1M is 20% complete in 40 mins. The half life of the reaction willbeOA) 9600 minOB) 160 secOC) 160 minOD) 9.6 mins |
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Answer» Answer: 160min Explanation: when the REACTION is 20% COMPLETE, x is 20%of the Indian CONNECTION a that is 20% ofx |
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| 36. |
Q.No : 13The spherical harmonics are eigen functopns of theA) angular momentum operatorB) position operatorOC) Hermitian matrixOD) radial part of the Schrodinger equation |
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| 37. |
Q.No : 11Arrhenius proposed an equation to explain....OA) the effect of temperature on reaction rateB) the effect of catalyst on reaction rateOC) the effect of viscocity on reaction rateOD) the effect of concentration on reaction rate |
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Answer» Explanation: |
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| 38. |
Substances which are formed after the completion of a chemical reaction |
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Answer» Substances which are formed after the completion of a chemical REACTION are called Products. Explanation: PLEASE MARK MY ANSWER THE BRAINLIEST! |
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| 39. |
Follow Q what is mole concept |
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Answer» Answer: mole is an amount unit similar to familiar units like PAIR, dozen, GROSS, etc. It provides a specific measure of the number of atoms or MOLECULES in a bulk sample of matter. A mole is defined as the amount of substance containing the same number of DISCRETE ENTITIES (atoms, molecules, ions, etc.) |
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| 40. |
5. The suspension of slaked lime in water is known asa) lime waterb) quick limec) milk of limed) aqueous solution of slaked limeC Movin douationfrafan |
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Answer» QUICK lime Explanation: |
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| 41. |
Which of the following groups shows -R effect A)-OH B)-CN C)-OR D)-NHR |
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| 42. |
Give the balanced equation for:c. Na2SiF6(s)+Na(s) -> Si(s)+NaF(s)Please help me !!!! |
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Answer» Answer: 2Na2SiF6(s)+2Na=2Si+6NaF |
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| 43. |
Give the balanced equation for:b. Silicon tetrachloride is reacted with very pure magnesium, producing silicon and magnesium chloride.Please help me !! |
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Answer» SiCl4+2Mg=Si+2MgCl2 |
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| 44. |
Give the balanced equation for:.a. SiO2(s)+C(s)->Si(s)+CO(g)Please help me !!!! |
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Answer»
Some elements or groups in the products are not present in the REAGENTS: G Error: EQUATION SIO2(s)+C(s)=Si(s)+CO(G) is an impossible reaction Please correct your reaction or CLICK on one of the suggestions below: SiO2(s) + C(s) = CO(g) + Si(s) SiO2(s) + C(s) = CO(g) + Si SiO2(s) + C(s) = CO(g) + Si(l) SiO2(s) + C(s) = CO(g) + SIOC(s) MARK AS BRAINLIST AND FOLLOW IT YOU WANT MORE ANSWERS |
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| 46. |
Ionisation enthalpy (IE1) of O is less than that of N – Explain |
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Answer» hmmmmmmmm Explanation: |
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| 47. |
Label the parts 1-10 of human digestive system shown in the diagram |
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Answer» where is the DIAGRAM???¿¿¿ |
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| 48. |
Which is the black solid formed when copper is heated with oxygen |
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Answer» The black copper oxide is formed when copper metal is heated and MADE to react with oxygen. Then copper oxide reacts with the hydrogen gas and forms the copper metal and WATER. |
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| 49. |
If a iron chair and plastic chair are in a room with air conditioner and temperature of air conditioner is set at 18°C . What will be the temperature of both chairs and which one will feel cold? |
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Answer» Metals are better thermal conductors than plastic, but it is POSSIBLE to MAKE plastics that are thermally conductive. ... Metals have high specific HEAT and HOLD lot of heat and conducts heat faster and COOLS faster. So, plastic will cool slower, for the same temperature range. Iron chair is your answer ✌️✌️ |
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