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.

Which of the following changes represents reduction?

Answer»

Which of the following changes represents reduction?


2.

Polarization is the distortion of the shape of an anion by the cation. Which of the following statements is correct?

Answer»

Polarization is the distortion of the shape of an anion by the cation. Which of the following statements is correct?


3.

The reaction quotient (Q) for the reaction. N2(g)+3H2(g)⇌2NH3(g) is given by Q=[NH3]2[N2][H2]3. The reaction will proceed from right to left if : (Kc is the equilibrium constant)

Answer»

The reaction quotient (Q) for the reaction.

N2(g)+3H2(g)2NH3(g) is given by

Q=[NH3]2[N2][H2]3. The reaction will proceed from right to left if : (Kc is the equilibrium constant)


4.

In a chemical reaction, x + 2 y z, if the rate of appearance of z is 0.50 moles per litre per hour, then the rate of disappearance of y is

Answer»

In a chemical reaction, x + 2 y z, if the rate of appearance of z is 0.50 moles per litre per hour, then the rate of disappearance of y is


5.

The most stable Lewis acid-base adduct among the following is:

Answer»

The most stable Lewis acid-base adduct among the following is:

6.

How much work to be done in decreasing the volume of an ideal gas by an amount of 2.4×10−4m3 at normal temperature and constant normal pressure of 1×105N/m2 ?

Answer»

How much work to be done in decreasing the volume of an ideal gas by an amount of 2.4×104m3 at normal temperature and constant normal pressure of 1×105N/m2 ?


7.

Which of the following arrangements correctly represents the decreasing order of bond angles?

Answer»

Which of the following arrangements correctly represents the decreasing order of bond angles?

8.

Which of the following is not a polyamide fibre?

Answer»

Which of the following is not a polyamide fibre?


9.

State limitations of the first law of thermodynamics?

Answer» State limitations of the first law of thermodynamics?
10.

What volume of CO2 (measured at STP) is obtained on heating 10 grams of 90% pure limestone?

Answer»

What volume of CO2 (measured at STP) is obtained on heating 10 grams of 90% pure limestone?

11.

The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electrons in 4p orbital. Which of these electron experiences the lowest effective nuclear charge?

Answer»

The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electrons in 4p orbital. Which of these electron experiences the lowest effective nuclear charge?

12.

Which of the following is most electronegative?

Answer»

Which of the following is most electronegative?

13.

Hydrogen peroxide is detected by using acidified TiO2. An orange coloured compound (B) is formed. The change in oxidation state of ‘Ti’ in this reaction is:___

Answer»

Hydrogen peroxide is detected by using acidified TiO2. An orange coloured compound (B) is formed. The change in oxidation state of ‘Ti’ in this reaction is:___

14.

Calcium carbonate decomposes on heating according to the equation: CaCO3(s)⟶CaO(s)+CO2 At STP, the volume of CO2 obtained by thermal decomposition of 50g of CaCO3 will be:

Answer»

Calcium carbonate decomposes on heating according to the equation:

CaCO3(s)CaO(s)+CO2

At STP, the volume of CO2 obtained by thermal decomposition of 50g of CaCO3 will be:


15.

Which of the compounds with molecular formula C5H10 yields acetone on ozonolysis?

Answer»

Which of the compounds with molecular formula C5H10 yields acetone on ozonolysis?


16.

Calculate the number of aluminium ions present in 0.051 g of aluminium oxide (Atomic mass of Al = 27u).

Answer» Calculate the number of aluminium ions present in 0.051 g of aluminium oxide (Atomic mass of Al = 27u).
17.

All the following are proteins present in human blood except

Answer»

All the following are proteins present in human blood except


18.

A catalyst is used in a reaction to [CPMT 1972, 75, 97; DPMT 1982]

Answer»

A catalyst is used in a reaction to

[CPMT 1972, 75, 97; DPMT 1982]


19.

Geometrical isomerism is shown by?

Answer» Geometrical isomerism is shown by?
20.

The entropy change when two moles of ideal monoatomic gas is heated from 200∘C to 300∘C reversibly and isochorically?

Answer»

The entropy change when two moles of ideal monoatomic gas is heated from 200C to 300C reversibly and isochorically?

21.

The equilibrium constant (Kp) for the decomposition of a gaseous water: H2O(g)⇌H2(g)+O2(g) Is related to degree of dissociation at total pressure ‘p’ is given by

Answer» The equilibrium constant (Kp) for the decomposition of a gaseous water:
H2O(g)H2(g)+O2(g)
Is related to degree of dissociation at total pressure ‘p’ is given by
22.

Distinguish between decentaralisation and delegation on the basis of nature, control, scope, and status.

Answer»

Distinguish between decentaralisation and delegation on the basis of nature, control, scope, and status.

23.

Which of the following molecules do not obey the octet rule in any of the important Lewis structures needed to describe the bonding in the molecule?

Answer»

Which of the following molecules do not obey the octet rule in any of the important Lewis structures needed to describe the bonding in the molecule?

24.

1 , 2 di-bromo cyclohexane on dehydro halogenation gives [UPSEAT 2003]

Answer»

1 , 2 di-bromo cyclohexane on dehydro halogenation gives

[UPSEAT 2003]


25.

(X) in the above reaction is :

Answer»
(X) in the above reaction is :
26.

Hydrocarbon 'B' is:

Answer»
Hydrocarbon 'B' is:
27.

XY2 dissociates as, XY2(g)⇌XY(g)+Y(g) Initial pressure of XY2 is 600 mm Hg. The total pressure at equilibrium is 800 mm Hg. Assuming volume of system to remain constant, the value of KP is

Answer»

XY2 dissociates as,
XY2(g)XY(g)+Y(g)
Initial pressure of XY2 is 600 mm Hg. The total pressure at equilibrium is 800 mm Hg. Assuming volume of system to remain constant, the value of KP is


28.

Low spin complex of d6 cation in an octahedral field will have how much energy? (Δ0= crystal field splitting energy in an octahedral field, P = electron pairing energy)

Answer»

Low spin complex of d6 cation in an octahedral field will have how much energy?
(Δ0= crystal field splitting energy in an octahedral field,
P = electron pairing energy)

29.

The acidity (acid strength) of halo acids increases in the order:

Answer» The acidity (acid strength) of halo acids increases in the order:
30.

Give the uses of freon 12, DDT, carbon tetrachloride and iodoform.

Answer»

Give the uses of freon 12, DDT, carbon tetrachloride and iodoform.

31.

The decomposition of dimethyl ether leads to the formation of CH4, H2 and CO and the reaction rate is given by: Rate =k[CH3OCH3]32. The rate of reaction is followed by increase in pressure in a closed vessel, so the rate can be expressed in terms of the partial pressure of dimethyl ether i.e. Rate = k(pCH3OCH3)32. If the pressure is measured in bar and time in minutes, then what are the units of rate and rate constants?

Answer»

The decomposition of dimethyl ether leads to the formation of CH4, H2 and CO and the reaction rate is given by:

Rate =k[CH3OCH3]32. The rate of reaction is followed by increase in pressure in a closed vessel, so the rate can be expressed in terms of the partial pressure of dimethyl ether i.e. Rate = k(pCH3OCH3)32. If the pressure is measured in bar and time in minutes, then what are the units of rate and rate constants?

32.

Match the following: (1)Non-polar Molecular solids (i) Coulombic or electrostatic forces (2)H-Bonded Molecular solids (ii) H-bonding (3)Ionic solids (iii) Metallic bonding (4)Covalent solids (iv) Weak dispersion forces (5)Metallic solids (v) dipole – dipole interaction (vi) covalent Bonding

Answer»

Match the following:

(1)Non-polar Molecular solids (i) Coulombic or electrostatic forces

(2)H-Bonded Molecular solids (ii) H-bonding

(3)Ionic solids (iii) Metallic bonding

(4)Covalent solids (iv) Weak dispersion forces

(5)Metallic solids (v) dipole – dipole interaction

(vi) covalent Bonding


33.

Identify the end product in the reaction sequence

Answer»

Identify the end product in the reaction sequence

34.

Burns produced by steam is severe than that of water why?

Answer» Burns produced by steam is severe than that of water why?




35.

For alkali metals , which of the following trends is incorrect?

Answer»

For alkali metals , which of the following trends is incorrect?


36.

Magnesium cation has polarizing power close to that of:

Answer»

Magnesium cation has polarizing power close to that of:

37.

Explain why propanol has higher boiling point than that of the hydrocarbon, butane?

Answer»

Explain why propanol has higher boiling point than that of the hydrocarbon, butane?

38.

Compare the relative stabilities of following resonating structures:

Answer»

Compare the relative stabilities of following resonating structures:

39.

Find the equivalent weight of KMnO4 in the given reaction, if the molar mass of MnO−4 is 'M' ? KMnO4→Mn2+ (acidic medium)

Answer»

Find the equivalent weight of KMnO4 in the given reaction, if the molar mass of MnO4 is 'M' ?
KMnO4Mn2+ (acidic medium)

40.

Which of the following polymer is stored in the liver of animals? (a) Amylose (b) Cellulose (c) Amylopectin (d) Glycogen

Answer»

Which of the following polymer is stored in the liver of animals?
(a) Amylose (b) Cellulose (c) Amylopectin (d) Glycogen

41.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the option out of the choices given below in each question. Assertion (A) The empirical mass of ethene is half of its molecular mass. Reason (R) The empirical formula represents the simplest whole number ratio of various atoms present in a compound. (a) Both A and R are true and R is the correct explanation of A. (b) A is true but R is false (c) A is false but R is true (d) Both A and R are false.

Answer»

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the option out of the choices given below in each question.

Assertion (A) The empirical mass of ethene is half of its molecular mass.

Reason (R) The empirical formula represents the simplest whole number ratio of various atoms present in a compound.

(a) Both A and R are true and R is the correct explanation of A.

(b) A is true but R is false

(c) A is false but R is true

(d) Both A and R are false.

42.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices. (a) Assertion and Reason both are correct statements an Reason is correct explanation for Assertion. (b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion. (c) Assertion is correct statement but Reason is wrong statement (d) Assertion is wrong statement but Reason is correct statement. Assertion (A) The packing efficiency is maximum for the fcc structure. Reason (R) The coordination number is 12 in fcc structures.

Answer»

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements an Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(c) Assertion is correct statement but Reason is wrong statement

(d) Assertion is wrong statement but Reason is correct statement.

Assertion (A) The packing efficiency is maximum for the fcc structure.

Reason (R) The coordination number is 12 in fcc structures.

43.

Observe the following reaction and find out that how many number of reactant stereoisomers can be reduced to optically inactive meso product.

Answer» Observe the following reaction and find out that how many number of reactant stereoisomers can be reduced to optically inactive meso product.


44.

When excess of formaldehyde is made to react with acetaldehyde in presence of Ca(OH)2, a polyhydroxy compound is formed along with calcium formate. If the ratio of C to O is x:1 in the polyhydroxy compound, what is the value of x?

Answer» When excess of formaldehyde is made to react with acetaldehyde in presence of Ca(OH)2, a polyhydroxy compound is formed along with calcium formate. If the ratio of C to O is x:1 in the polyhydroxy compound, what is the value of x?
45.

How many chiral compounds are obtained on the monochlorination of 2-Methylbutane?

Answer»

How many chiral compounds are obtained on the monochlorination of 2-Methylbutane?


46.

The volume of CO2 evolved in respiration is equal to the volume of O2 consumed, the respiratory substrate is

Answer»

The volume of CO2 evolved in respiration is equal to the volume of O2 consumed, the respiratory substrate is


47.

Consider the set up shown, where we have an ideal gas trapped in a cylindrical container, kept on a thermal reservoir which provides heat to the system. The weight on top maintains a constant pressure P on the gas. Supplying heat Q changes the temperature by ΔT, and expands the volume by ΔV. The expanding gas displaces the container and does work, W. Choose the correct inferences from the following options

Answer»

Consider the set up shown, where we have an ideal gas trapped in a cylindrical container, kept on a thermal reservoir which provides heat to the system. The weight on top maintains a constant pressure P on the gas. Supplying heat Q changes the temperature by ΔT, and expands the volume by ΔV. The expanding gas displaces the container and does work, W. Choose the correct inferences from the following options


48.

Q. Arrange in the thermal stability order of carbonates Na2CO3, K2CO3, BeCO3, BaCO3

Answer» Q. Arrange in the thermal stability order of carbonates
Na2CO3, K2CO3, BeCO3, BaCO3
49.

The major product of the reaction is:

Answer»

The major product of the reaction is:


50.

Find out the product 'P' : 2CH4+O2Cu/523K−−−−−→100 atmP

Answer»

Find out the product 'P' :
2CH4+O2Cu/523K−−−−100 atmP