Explore topic-wise InterviewSolutions in Current Affairs.

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.

A mixture of ideal gases has n mole of monoatomic gas and m mole of diatomic gas and q moles of triatomic gas (non linear) at absolute temperature T. then the internal energy of mixture is what?

Answer» A mixture of ideal gases has n mole of monoatomic gas and m mole of diatomic gas and q moles of triatomic gas (non linear) at absolute temperature T. then the internal energy of mixture is what?
2.

Calculate the volume of 0.005M KMnO4solution required to oxidise completely 2.7g of oxalic acid(H2C2O4) in acidic medium.According to equation 2KMnO4 +3H2SO4+5C2H2O4->K2SO4 +2MnSO4 +8H20 + 10CO2

Answer» Calculate the volume of 0.005M KMnO4solution required to oxidise completely 2.7g of oxalic acid(H2C2O4) in acidic medium.According to equation 2KMnO4 +3H2SO4+5C2H2O4->K2SO4 +2MnSO4 +8H20 + 10CO2
3.

Which of the following molecules is non-polar in nature?

Answer»

Which of the following molecules is non-polar in nature?

4.

Is law of mass action incorrect? What are the limitations of law of mass action?

Answer» Is law of mass action incorrect? What are the limitations of law of mass action?
5.

45 When phenol reacts with conc. nitric acid + sulphuric acid it gives 2,4,6- trinitro phenol and 1,4-benzoquinone

Answer» 45 When phenol reacts with conc. nitric acid + sulphuric acid it gives 2,4,6- trinitro phenol and 1,4-benzoquinone
6.

Whatis the covalence of nitrogen in N2O5?

Answer»

What
is the covalence of nitrogen in N
2O5?

7.

Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).a. What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K?

Answer» Pragya tested the solubility of three different substances at different temperatures and collected the data as given below (results are given in the following table, as grams of substance dissolved in 100 grams of water to form a saturated solution).



a. What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313 K?
8.

The normality of 100% (weight/volume) acetic acid is Options:1 N 10 N 1.7 N 0.83 N

Answer» The normality of 100% (weight/volume) acetic acid is Options:1 N 10 N 1.7 N 0.83 N
9.

According to the Raoult's law the relative decrease in the solvent vapour pressure over the solution containing a nonvolatile solute is equal to the

Answer»

According to the Raoult's law the relative decrease in the solvent vapour pressure over the solution containing a nonvolatile solute is equal to the


10.

Hybridised orbitals form only sigma bonds?

Answer» Hybridised orbitals form only sigma bonds?
11.

10. Assertion Ehtene is more reactive than propene towards electrophlic attack. Reason. Propene is stabilsed by no bond resonance

Answer» 10. Assertion Ehtene is more reactive than propene towards electrophlic attack. Reason. Propene is stabilsed by no bond resonance
12.

What is Coupling reaction ? Explain with one example

Answer»

What is Coupling reaction ? Explain with one example

13.

Calculate packing fraction from the following figure to two decimal places. Multiply it by 100 and enter the value. ___

Answer»

Calculate packing fraction from the following figure to two decimal places. Multiply it by 100 and enter the value.


___
14.

a 1st order reaction graphs between t1/2 & concentration i

Answer» a 1st order reaction graphs between t1/2 & concentration i
15.

3.5 gm of solid Barium fluoride is added to water forming 1 lit of solution at 25°C. Solubility product of salt is 4 × 10–6. What will be the minimum volume of water to be added to above solution to dissolve the salt completely. (At. wt. Ba : 137, F : 19)

Answer» 3.5 gm of solid Barium fluoride is added to water forming 1 lit of solution at 25°C. Solubility product of salt is 4 × 10–6. What will be the minimum volume of water to be added to above solution to dissolve the salt completely. (At. wt. Ba : 137, F : 19)
16.

how does gypsum differs from hydrated copper sulphate

Answer» how does gypsum differs from hydrated copper sulphate
17.

Permanganate ion teacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write balanced ionic equation for the reactio

Answer» Permanganate ion teacts with bromide ion in basic medium to give manganese dioxide and bromate ion. Write balanced ionic equation for the reactio
18.

Find the range of the function y=x/1+x^2

Answer» Find the range of the function y=x/1+x^2
19.

When a polyelectronic atom has atital spin=S it gives rise to (2S+1)spin quantumstates known as spin multiplicity.what is spin multiplicity of nitrogen atom in its ground state

Answer» When a polyelectronic atom has atital spin=S it gives rise to (2S+1)spin quantumstates known as spin multiplicity.what is spin multiplicity of nitrogen atom in its ground state
20.

Which of the following compounds display geometrical isomerism?

Answer»

Which of the following compounds display geometrical isomerism?

21.

In which of the following orbital diagrams, both Pauli exclusion principle and Hund's rule are violated ?

Answer»

In which of the following orbital diagrams, both Pauli exclusion principle and Hund's rule are violated ?

22.

The order of basic strength among the following amines in benzene will be

Answer»

The order of basic strength among the following amines in benzene will be



23.

Find the total number of oxygen atoms in 6×106 formula units of the complex [Co(H2O)6]Cl2.

Answer»

Find the total number of oxygen atoms in 6×106 formula units of the complex [Co(H2O)6]Cl2.


24.

3 percent solution of glucose is isotonic with 1 percent of a non volatile nonelectrolyte substance . The molecular mass of the substance would be

Answer» 3 percent solution of glucose is isotonic with 1 percent of a non volatile nonelectrolyte substance . The molecular mass of the substance would be
25.

Differentiate between plasma and BEC (Bose Einstein condensate)

Answer» Differentiate between plasma and BEC (Bose Einstein condensate)
26.

why vinyl chloride doesnot form grignard reagent on reaction with mg in the prescence of ether

Answer» why vinyl chloride doesnot form grignard reagent on reaction with mg in the prescence of ether
27.

Which of the following metal ions will have maximum number of unpaired electrons?

Answer» Which of the following metal ions will have maximum number of unpaired electrons?
28.

58.For hydrogen gas, cp-cv=x and for oxygen gas cp-cv=y where cp and cv are molar specific heats. Then the relation between cp and cv are?

Answer» 58.For hydrogen gas, cp-cv=x and for oxygen gas cp-cv=y where cp and cv are molar specific heats. Then the relation between cp and cv are?
29.

One mole of an ideal gas (γ=1.4) is adiabatically compressed so that its temperature rises from 27oC to 35oC. The change in the internal energy of the gas is (given R = 80. J / mole / K)

Answer»

One mole of an ideal gas (γ=1.4) is adiabatically compressed so that its temperature rises from 27oC to 35oC. The change in the internal energy of the gas is (given R = 80. J / mole / K)



30.

The number of repeating units of monomers in polymers is:

Answer»

The number of repeating units of monomers in polymers is:


31.

29. if each orbit can hold maximum of 3 electron the number of elements in 2nd period of periodic table is

Answer» 29. if each orbit can hold maximum of 3 electron the number of elements in 2nd period of periodic table is
32.

33. for a first order reaction with half life of 150sec the time taken for the concentration of the reactant to fall from M/10 to M/100 will be approximately

Answer» 33. for a first order reaction with half life of 150sec the time taken for the concentration of the reactant to fall from M/10 to M/100 will be approximately
33.

The numbers of significant figures in 1.84 x10-27 kg are:

Answer»

The numbers of significant figures in 1.84 x10-27 kg are:


34.

In the reaction:X is:

Answer»

In the reaction:



X is:

35.

Number of moles of electrons present in 34 g of NH3 is:

Answer»

Number of moles of electrons present in 34 g of NH3 is:

36.

Which of the following sets of reactions cannot give a carboxylic acid as the final product?

Answer»

Which of the following sets of reactions cannot give a carboxylic acid as the final product?

37.

A dimentionally consistent relation for the volume "V" of a liquid of cofficient of viscosity "n" per second through a tube of radius "r"and length "l" and having a pressure difference "P" across its end is1.V=πPr4÷8nl2.V=πn÷8Pr43.V=8Pn÷πr44.V=πPn÷8r4

Answer» A dimentionally consistent relation for the volume "V" of a liquid of cofficient of viscosity "n" per second through a tube of radius "r"and length "l" and having a pressure difference "P" across its end is
1.V=πPr4÷8nl
2.V=πn÷8Pr4
3.V=8Pn÷πr4
4.V=πPn÷8r4
38.

The potential energy of a body of mass 3 kg on the surface of a planet is 54 joule. The escape velocity will be (in ms)

Answer» The potential energy of a body of mass 3 kg on the surface of a planet is 54 joule. The escape velocity will be (in ms)
39.

Identify compound X in the following sequences of reactions.

Answer»

Identify compound X in the following sequences of reactions.




40.

(CH_3)_2-C=CH_2 \overset{KMnO_4/H^+}{→ Products} Which one of the following is one of the products formed? (1) CH_3COOH (2) CH_3CHO (3) CH_3O (4) CO_2

Answer» (CH_3)_2-C=CH_2 \overset{KMnO_4/H^+}{→ Products} Which one of the following is one of the products formed? (1) CH_3COOH (2) CH_3CHO (3) CH_3O (4) CO_2
41.

25. What is the hybridisation of carbons in CH2CH3OH by using formula

Answer» 25. What is the hybridisation of carbons in CH2CH3OH by using formula
42.

Studies on the elevation in boiling point of Ca(NO3)2 gives its molar mass to be 131.2 g/mol. The degree of dissociation of Ca(NO3)2 is:

Answer»

Studies on the elevation in boiling point of Ca(NO3)2 gives its molar mass to be 131.2 g/mol. The degree of dissociation of Ca(NO3)2 is:

43.

An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1]

Answer»

An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is : [Atomic wt. of C is 12, H is 1]

44.

Calculate r and a relationship from the following figure. All spheres are of equal radius r. If r = x * a, round off x to 2 decimals and type 100x. ___

Answer»

Calculate r and a relationship from the following figure. All spheres are of equal radius r.

If r = x * a, round off x to 2 decimals and type 100x.


___
45.

Which of the following species act as an amphiprotic species in the following reactions?HCl(aq)+H2O(aq)⇌H3O+(aq)+Cl−(aq)NH3(aq)+H2O(aq)⇌NH+4(aq)+OH−(aq)

Answer»

Which of the following species act as an amphiprotic species in the following reactions?

HCl(aq)+H2O(aq)H3O+(aq)+Cl(aq)



NH3(aq)+H2O(aq)NH+4(aq)+OH(aq)

46.

What are the conditions for acidity and basicity in organic compounds?? What are the factors were they depend on?? And give one example for each factors and conditions

Answer»

What are the conditions for acidity and basicity in organic compounds?? What are the factors were they depend on?? And give one example for each factors and conditions

47.

13.H2o2,ko2,Na2o2,o2 increasing order of o-o bond length

Answer» 13.H2o2,ko2,Na2o2,o2 increasing order of o-o bond length
48.

Which of the following statements is not correct about order of a reaction ? (a) The order of a reaction can be fractional number (b) Order of a reaction is experimentally determined quantity (c) The order of reaction is always equal to the sum of the stoichiometric coefficients of reactants in the balanced chemical equation for a reaction (d) The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law expression.

Answer»

Which of the following statements is not correct about order of a reaction ?
(a) The order of a reaction can be fractional number
(b) Order of a reaction is experimentally determined quantity
(c) The order of reaction is always equal to the sum of the stoichiometric coefficients of reactants in the balanced chemical equation for a reaction
(d) The order of a reaction is the sum of the powers of molar concentration of the reactants in the rate law expression.

49.

Phthalic anhydrideLiAlH4−−−−→(A)PCC−−−→(B)H+−−−→N2H4(C) Product (C) is:

Answer» Phthalic anhydrideLiAlH4−−−(A)PCC−−(B)H+−−N2H4(C)

Product (C) is:
50.

Calculate mass of 3g molecules of HNO​​​​3.

Answer»

Calculate mass of 3g molecules of HNO​​​​3.