46295 + Interview Questions in Chemistry

1.	In halogens, with the increase of atomic number which habit is found
Answer» In halogens, with the increase of atomic number which habit is found

Discussion

2.	The number of moles of KMnO4 required, to react with 2 moles of ferrous oxalate is:
Answer» The number of moles of $K M n O_{4}$ required, to react with 2 moles of ferrous oxalate is:

Discussion

3.	If the structure of alkyl halide during dehydrohalogenation reaction is such that it can undergo H-elimination from two different sites, then the more highly substituted alkene is the major product. This generalization is known as
Answer» If the structure of alkyl halide during dehydrohalogenation reaction is such that it can undergo H-elimination from two different sites, then the more highly substituted alkene is the major product. This generalization is known as

Discussion

4.	A 0.6% solution of urea (molar mass = 60) would be isotonic with
Answer» A 0.6% solution of urea (molar mass = 60) would be isotonic with

Discussion

5.	The monomer unit of polyethene is?
Answer» The monomer unit of polyethene is?

Discussion

6.	Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither ? Write the structures of the expected products of aldol condensation or Cannizzaro reaction ? Methanal 2-methyl pentanal Benzaldehyde Benzophenone Cyclohexanone l - phenyl propanone Phenyl acetaldehyde Butan - 1 - ol 2, 2 - dimethyl butanal
Answer» Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither ? Write the structures of the expected products of aldol condensation or Cannizzaro reaction ? Methanal 2-methyl pentanal Benzaldehyde Benzophenone Cyclohexanone l - phenyl propanone Phenyl acetaldehyde Butan - 1 - ol 2, 2 - dimethyl butanal

6.

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither ? Write the structures of the expected products of aldol condensation or Cannizzaro reaction ? Methanal 2-methyl pentanal Benzaldehyde Benzophenone Cyclohexanone l - phenyl propanone Phenyl acetaldehyde Butan - 1 - ol 2, 2 - dimethyl butanal

Answer»

Which of the following compounds would undergo aldol condensation, which the Cannizzaro reaction and which neither ? Write the structures of the expected products of aldol condensation or Cannizzaro reaction ?

Methanal

2-methyl pentanal

Benzaldehyde

Benzophenone

Cyclohexanone

l - phenyl propanone

Phenyl acetaldehyde

Butan - 1 - ol

2, 2 - dimethyl butanal

Discussion

7.	Reduction of nitro alkanes yields
Answer» Reduction of nitro alkanes yields

Discussion

8.	The ionization constant of phenol is 1.0×10–10. What is the concentration of phenolate ion in 0.05 M solution of phenol? What will be its degree of ionization if the solution is also 0.01M in sodium phenolate?
Answer» The ionization constant of phenol is $1.0 \times 10^{- 10}$ . What is the concentration of phenolate ion in 0.05 M solution of phenol? What will be its degree of ionization if the solution is also 0.01M in sodium phenolate?

Discussion

9.	A metal crystallizes into two cubic phases, FCC and BCC whose unit cell lengths are 3.5 and 3.0 Å respectively. The ratio of densities of FCC and BCC.
Answer» A metal crystallizes into two cubic phases, FCC and BCC whose unit cell lengths are 3.5 and 3.0 Å respectively. The ratio of densities of FCC and BCC.

Discussion

10.	50 ml of 1 M oxalic acid is shaken with 0.5 g wood charcoal. The final concentration of the solution after adsorption is 0.5 M. What is the amount of oxalic acid absorbed per gm of carbon?
Answer» 50 ml of 1 M oxalic acid is shaken with 0.5 g wood charcoal. The final concentration of the solution after adsorption is 0.5 M. What is the amount of oxalic acid absorbed per gm of carbon?

Discussion

11.	An organic compound ‘X‘ having molecular formula C5H10O yields phenyl hydrazone and gives negative response to the Iodoform test and Tollen’s test. It produces n-pentane on reduction. ‘X‘ could be :
Answer» An organic compound ‘X‘ having molecular formula $C_{5} H_{10} O$ yields phenyl hydrazone and gives negative response to the Iodoform test and Tollen’s test. It produces n-pentane on reduction. ‘X‘ could be :

Discussion

12.	Which of the following is poly carbonate?
Answer» Which of the following is poly carbonate?

Discussion

13.	What are the characteristics of the transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements?
Answer» What are the characteristics of the transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements?

Discussion

14.	In the following molecules: BF3, BCl3, BBr3, BI3 I , II , III , IV The correct order of Lewis acidic strength will be:
Answer» In the following molecules: $B F_{3}, B C l_{3}, B B r_{3}, B I_{3} I, I I, I I I, I V$ The correct order of Lewis acidic strength will be:

Discussion

15.	The correct order of increasing C-O bond length of CO, CO2−3, CO2 is
Answer» The correct order of increasing C-O bond length of $C O, C O_{3}^{2 -}, C O_{2}$ is

Discussion

16.	Correct order of bond angle is
Answer» Correct order of bond angle is

Discussion

17.	If ΔG=−177 k cal for (1) 2Fe(s)+32O2(g)→Fe2O3(s) and ΔG=−19 k cal for (2) 4Fe2O3(s)+Fe(s)→3Fe3O4(s) What is the Gibbs free energy of formation of Fe3O4(s) ?
Answer» If $Δ G = - 177 k cal$ for (1) $2 F e (s) + \frac{3}{2} O_{2} (g) \to F e_{2} O_{3} (s)$ and $Δ G = - 19 k cal$ for (2) $4 F e_{2} O_{3} (s) + F e (s) \to 3 F e_{3} O_{4} (s)$ What is the Gibbs free energy of formation of $F e_{3} O_{4} (s)$ ?

Discussion

18.	Find out the number of compound(s) having non zero Dipole moment.
Answer» Find out the number of compound(s) having non zero Dipole moment.

Discussion

19.	The arrangement of X-ions around A+ ion in soild AX is given in the figure(not drawn to scale). If the radius of X- is 250 pm, the radius of A+ is:
Answer» The arrangement of X^-ions around A⁺ ion in soild AX is given in the figure(not drawn to scale). If the radius of X^-is 250 pm, the radius of A⁺ is:

19.

The arrangement of X-ions around A+ ion in soild AX is given in the figure(not drawn to scale). If the radius of X- is 250 pm, the radius of A+ is:

Answer»

The arrangement of X^-ions around A⁺ ion in soild AX is given in the figure(not drawn to scale). If the radius of X^-is 250 pm, the radius of A⁺ is:

Discussion

20.	The equilibrium constant for the given reaction H2 + I2 ⇌ 2HI is correctly given by expression
Answer» The equilibrium constant for the given reaction $H_{2} + I_{2} ⇌ 2 H I$ is correctly given by expression

20.

The equilibrium constant for the given reaction H2 + I2 ⇌ 2HI is correctly given by expression

Answer»

The equilibrium constant for the given reaction $H_{2} + I_{2} ⇌ 2 H I$ is correctly

given by expression

Discussion

21.	Why NaoH has higher condactance than Nacl solution of same molarity?
Answer» Why NaoH has higher condactance than Nacl solution of same molarity?

Discussion

22.	In a double stranded DNA molecule of human, the percentage of cytosine is 18.4. What is the percentage of adenine?
Answer» In a double stranded DNA molecule of human, the percentage of cytosine is 18.4. What is the percentage of adenine?

Discussion

23.	This is called [CPMT 1988; MP PET 2000]
Answer» This is called [CPMT 1988; MP PET 2000]

23.

This is called [CPMT 1988; MP PET 2000]

Answer»

This is called

[CPMT 1988; MP PET 2000]

Discussion

24.	A 50 mL 1.92% w/v solution of a metal ion Mn+ at. wt =60 was treated with 5.32 g hydrazinehydrate (N2H4.H2O) 90% pure and the mixture was saturated with CO2 gas when entire metal gets pecipitated as a complex [M(NH2−NHCOO)n] the complex was filtered of and the filterate was titrated with M/10 KIO3 in the presence of conc. HCl according to the following equation : N2H4+IO−3+2H++Cl−→ICl+3H2O+N2↑ The volume of M/10 KIO3 solution needed for end point to arrive was 480 mL. Find the value of n.
Answer» A $50 m L$ $1.92 %$ $w / v$ solution of a metal ion $M^{n +} a t . w t = 60$ was treated with $5.32 g$ hydrazinehydrate $(N_{2} H_{4} . H_{2} O) 90 % p u r e$ and the mixture was saturated with $C O_{2}$ gas when entire metal gets pecipitated as a complex $[M (N H_{2} - N H C O O)_{n}]$ the complex was filtered of and the filterate was titrated with $M / 10 K I O_{3}$ in the presence of $c o n c . H C l$ according to the following equation : $N_{2} H_{4} + I O_{3}^{-} + 2 H^{+} + C l^{-} \to I C l + 3 H_{2} O + N_{2} ↑$ The volume of $M / 10 K I O_{3}$ solution needed for end point to arrive was $480 m L$ . Find the value of $n$ .

Discussion

25.	The smallest ketone and its next homologue are reacted with NH2OH to form oxime. What will be the result?
Answer» The smallest ketone and its next homologue are reacted with NH2OH to form oxime. What will be the result?

Discussion

26.	One gram of Radium, with atomic weight 226, emits 4 × 1010 particles per second. The half-life of Radium is
Answer» One gram of Radium, with atomic weight 226, emits 4 × 10¹⁰ particles per second. The half-life of Radium is

Discussion

27.	A solution of 0.2 g of a compound containing Cu2+ and C2O2–4 ions on titration with 0.02 M KMnO4 in presence of H2SO4 consumes 22.6 mL of the oxidant. The resultant solution is neutralized with Na2CO3, acidified with dil. acetic acid and treated with excess KI.The liberated iodine requires 11.3 mL of 0.05MNa2S3O3 solution for complete reduction. Find out the mole ratio of Cu2+ to C2O2–4 in the compound is a:b. The sum of a+b is
Answer» A solution of $0.2 g$ of a compound containing $C u^{2 +}$ and $C_{2} O_{4}^{2 -}$ ions on titration with $0.02 M K M n O_{4}$ in presence of $H_{2} S O_{4}$ consumes $22.6 m L$ of the oxidant. The resultant solution is neutralized with $N a_{2} C O_{3}$ , acidified with dil. acetic acid and treated with excess $K I$ .The liberated iodine requires $11.3 m L$ of $0.05 M N a_{2} S_{3} O_{3}$ solution for complete reduction. Find out the mole ratio of $C u^{2 +}$ to $C_{2} O_{4}^{2 -}$ in the compound is $a : b$ . The sum of $a + b$ is

Discussion

28.	Potassium acid oxalate K2C2O4.3H2C2O4.4H2O can be oxidized by KMnO4 in acidic medium. Calculate the volume (in ml) of 0.1 M KMnO4 reacting in acidic solution with 1.27 gram of the acid oxalate.
Answer» Potassium acid oxalate $K_{2} C_{2} O_{4} .3 H_{2} C_{2} O_{4} .4 H_{2} O$ can be oxidized by $K M n O_{4}$ in acidic medium. Calculate the volume (in ml) of 0.1 M $K M n O_{4}$ reacting in acidic solution with 1.27 gram of the acid oxalate.

Discussion

29.	Which of the following is not a mineral of calcium?
Answer» Which of the following is not a mineral of calcium?

Discussion

30.	Consider the following liquid – vapour equilibrium. Liquid⇌Vapour Which of the following relations is correct?
Answer» Consider the following liquid – vapour equilibrium. $L i q u i d ⇌ V a p o u r$ Which of the following relations is correct?

Discussion

31.	The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of
Answer» The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of

Discussion

32.	The major product B is:
Answer» The major product B is:

Discussion

33.	In Young’s double slit experiment, the 10th maximum of wavelength λ1 is at distance y1 from its central maximum and the 5th maximum of wavelength λ2 is at a distance y2 from its central maximum. The ratio y1y2 will be
Answer» In Young’s double slit experiment, the $10^{t h}$ maximum of wavelength $λ_{1}$ is at distance $y_{1}$ from its central maximum and the $5^{t h}$ maximum of wavelength $λ_{2}$ is at a distance $y_{2}$ from its central maximum. The ratio $\frac{y_{1}}{y_{2}}$ will be

Discussion

34.	One mole of an ideal monoatomic gas is taken through a semi-circular thermodynamic process ACB shown in the P – V diagram. The heat supplied to the system is
Answer» One mole of an ideal monoatomic gas is taken through a semi-circular thermodynamic process ACB shown in the P – V diagram. The heat supplied to the system is

34.

One mole of an ideal monoatomic gas is taken through a semi-circular thermodynamic process ACB shown in the P – V diagram. The heat supplied to the system is

Answer»

One mole of an ideal monoatomic gas is taken through a semi-circular thermodynamic process ACB shown in the P – V diagram. The heat supplied to the system is

Discussion

35.	What is the dissociation and association constant?
Answer» What is the dissociation and association constant?

Discussion

36.	Which of the following particle is emitted in the reaction 13Al27+2He4→14P30+....
Answer» Which of the following particle is emitted in the reaction $_{13} A l^{27} +_{2} H e^{4} \to_{14} P^{30} +$ ....

Discussion

37.	The metal that forms a nitride by reacting directly with atmospheric N2 is:
Answer» The metal that forms a nitride by reacting directly with atmospheric $N_{2}$ is:

Discussion

38.	How Infrared rays are used for Military purposes?
Answer» How Infrared rays are used for Military purposes?

Discussion

39.	In the compound PClkF5−k, the possible values of k are 0 to 5. Then the sum of all possible value of k for the compounds having zero dipole moment is:
Answer» In the compound $P C l_{k} F_{5 - k}$ , the possible values of k are 0 to 5. Then the sum of all possible value of k for the compounds having zero dipole moment is:

Discussion

40.	Anti ferromagnetic material possess:-
Answer» Anti ferromagnetic material possess:-

Discussion

41.	Which structure is related to benzoin?
Answer» Which structure is related to benzoin?

Discussion

42.	Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: The composition of the liquid for which the vapour contains equal number of benzene and toluene molecules is about:
Answer» Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: The composition of the liquid for which the vapour contains equal number of benzene and toluene molecules is about:

Discussion

43.	Which of the following is correct for l = 0, 1, 2 and 3 respectively?
Answer» Which of the following is correct for l = 0, 1, 2 and 3 respectively?

Discussion

44.	In the aquous solution of Sulphuric acid the Mole fraction of water is 0.85 the molality of solution is?
Answer» In the aquous solution of Sulphuric acid the Mole fraction of water is 0.85 the molality of solution is?

Discussion

45.	In hydrogen atom the kinetic energy of electron is 3.4 eV. The distance of that electron from the nucleus:
Answer» In hydrogen atom the kinetic energy of electron is 3.4 eV. The distance of that electron from the nucleus:

Discussion

46.	Whether the hydrogen bond will occur in Cl-H-O, if it occurs why?
Answer» Whether the hydrogen bond will occur in Cl-H-O, if it occurs why?

Discussion

47.	0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g f iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ?
Answer» 0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g f iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ?

Discussion

48.	Write the number 123543 in scientific notation
Answer» Write the number 123543 in scientific notation

Discussion

49.	Which of the following is an intensive property?
Answer» Which of the following is an intensive property?

Discussion

50.	If total enthalpy of reactants & products is HR & HP respectively, then for exothermic reaction:
Answer» If total enthalpy of reactants & products is $H_{R}$ & $H_{P}$ respectively, then for exothermic reaction:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In halogens, with the increase of atomic number which habit is found

The number of moles of KMnO4 required, to react with 2 moles of ferrous oxalate is:

If the structure of alkyl halide during dehydrohalogenation reaction is such that it can undergo H-elimination from two different sites, then the more highly substituted alkene is the major product. This generalization is known as

A 0.6% solution of urea (molar mass = 60) would be isotonic with

The monomer unit of polyethene is?

Reduction of nitro alkanes yields

The ionization constant of phenol is 1.0×10–10. What is the concentration of phenolate ion in 0.05 M solution of phenol? What will be its degree of ionization if the solution is also 0.01M in sodium phenolate?

A metal crystallizes into two cubic phases, FCC and BCC whose unit cell lengths are 3.5 and 3.0 Å respectively. The ratio of densities of FCC and BCC.

50 ml of 1 M oxalic acid is shaken with 0.5 g wood charcoal. The final concentration of the solution after adsorption is 0.5 M. What is the amount of oxalic acid absorbed per gm of carbon?

An organic compound ‘X‘ having molecular formula C5H10O yields phenyl hydrazone and gives negative response to the Iodoform test and Tollen’s test. It produces n-pentane on reduction. ‘X‘ could be :

Which of the following is poly carbonate?

What are the characteristics of the transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements?

In the following molecules: BF3, BCl3, BBr3, BI3 I , II , III , IV The correct order of Lewis acidic strength will be:

The correct order of increasing C-O bond length of CO, CO2−3, CO2 is

Correct order of bond angle is

If ΔG=−177 k cal for (1) 2Fe(s)+32O2(g)→Fe2O3(s) and ΔG=−19 k cal for (2) 4Fe2O3(s)+Fe(s)→3Fe3O4(s) What is the Gibbs free energy of formation of Fe3O4(s) ?

Find out the number of compound(s) having non zero Dipole moment.

The arrangement of X-ions around A+ ion in soild AX is given in the figure(not drawn to scale). If the radius of X- is 250 pm, the radius of A+ is:

The equilibrium constant for the given reaction H2 + I2 ⇌ 2HI is correctly given by expression

Why NaoH has higher condactance than Nacl solution of same molarity?

In a double stranded DNA molecule of human, the percentage of cytosine is 18.4. What is the percentage of adenine?

This is called [CPMT 1988; MP PET 2000]

The smallest ketone and its next homologue are reacted with NH2OH to form oxime. What will be the result?

One gram of Radium, with atomic weight 226, emits 4 × 1010 particles per second. The half-life of Radium is

Potassium acid oxalate K2C2O4.3H2C2O4.4H2O can be oxidized by KMnO4 in acidic medium. Calculate the volume (in ml) of 0.1 M KMnO4 reacting in acidic solution with 1.27 gram of the acid oxalate.

Which of the following is not a mineral of calcium?

Consider the following liquid – vapour equilibrium. Liquid⇌Vapour Which of the following relations is correct?

The reddish brown precipitate formed in the Fehling’s test for aldehydes (RCHO) is due to the formation of

The major product B is:

In Young’s double slit experiment, the 10th maximum of wavelength λ1 is at distance y1 from its central maximum and the 5th maximum of wavelength λ2 is at a distance y2 from its central maximum. The ratio y1y2 will be

One mole of an ideal monoatomic gas is taken through a semi-circular thermodynamic process ACB shown in the P – V diagram. The heat supplied to the system is

What is the dissociation and association constant?

Which of the following particle is emitted in the reaction 13Al27+2He4→14P30+....

The metal that forms a nitride by reacting directly with atmospheric N2 is:

How Infrared rays are used for Military purposes?

In the compound PClkF5−k, the possible values of k are 0 to 5. Then the sum of all possible value of k for the compounds having zero dipole moment is:

Anti ferromagnetic material possess:-

Which structure is related to benzoin?

Consider the following partially labelled figure for an ideal binary solution of benzene and toluene and answer the following questions: The composition of the liquid for which the vapour contains equal number of benzene and toluene molecules is about:

Which of the following is correct for l = 0, 1, 2 and 3 respectively?

In the aquous solution of Sulphuric acid the Mole fraction of water is 0.85 the molality of solution is?

In hydrogen atom the kinetic energy of electron is 3.4 eV. The distance of that electron from the nucleus:

Whether the hydrogen bond will occur in Cl-H-O, if it occurs why?

0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g f iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ?

Write the number 123543 in scientific notation

Which of the following is an intensive property?

If total enthalpy of reactants &amp; products is HR &amp; HP respectively, then for exothermic reaction:

If total enthalpy of reactants & products is HR & HP respectively, then for exothermic reaction: