46295 + Interview Questions in Chemistry

1.	Homogeneous catalyst is the one
Answer» Homogeneous catalyst is the one

Discussion

2.	Arrange the following hydrides in their increasing acid strength [CH4, H2S, PH3 and SiH4] -
Answer» Arrange the following hydrides in their increasing acid strength $[C H_{4}, H_{2} S, P H_{3} a n d S i H_{4}]$ -

Discussion

3.	Which of the following statement is true?
Answer» Which of the following statement is true?

Discussion

4.	Which of the following is/are molecular solid(s)?
Answer» Which of the following is/are molecular solid(s)?

Discussion

5.	Alkaline earth metals always form divalent cations even though their second ionisation enthalpies are almost double than their first ionisation enthalpies
Answer» Alkaline earth metals always form divalent cations even though their second ionisation enthalpies are almost double than their first ionisation enthalpies

Discussion

6.	Hyaluronic acid is made of what
Answer» Hyaluronic acid is made of what

Discussion

7.	4 moles of A are mixed with 4 moles of B, then 2 moles of C are formed at equilibrium, according to the reaction, A + B ⇌ C + D. The equilibrium constant is :
Answer» 4 moles of A are mixed with 4 moles of B, then 2 moles of C are formed at equilibrium, according to the reaction, A + B $⇌$ C + D. The equilibrium constant is :

Discussion

8.	Write two factors which justify the need of modulating a low frequency signal into high frequencies before transmission.
Answer» Write two factors which justify the need of modulating a low frequency signal into high frequencies before transmission.

Discussion

9.	The relation between temperature and extent of adsorption(x/m) at constant pressure called as:
Answer» The relation between temperature and extent of adsorption(x/m) at constant pressure called as:

Discussion

10.	Poisonous gas 'Lewisite' is obtained by the reaction of
Answer» Poisonous gas 'Lewisite' is obtained by the reaction of

Discussion

11.	Give reasons for the following : (a) Measurement of osmotic pressure method is preferred for the determination of molar masses of macromolecules such as proteins and polymers. (b) Aquatic animals are more comfortable in cold water than in warm water. (c) Elevation of boiling point of 1 M KCI solution is nearly double than that of 1 M sugar solution.
Answer» Give reasons for the following : (a) Measurement of osmotic pressure method is preferred for the determination of molar masses of macromolecules such as proteins and polymers. (b) Aquatic animals are more comfortable in cold water than in warm water. (c) Elevation of boiling point of 1 M KCI solution is nearly double than that of 1 M sugar solution.

Discussion

12.	How to give iupac name for mixed ethers?
Answer» How to give iupac name for mixed ethers?

Discussion

13.	What mass of CaO will be obtained by heating 3moles of CaCo3?
Answer» What mass of CaO will be obtained by heating 3moles of CaCo3?

Discussion

14.	In solid state BeCl2 has a:
Answer» In solid state BeCl₂ has a:

Discussion

15.	An element X has the following isotopic composition: 200X−90%, 199X−8%, 202X−2%. The weighted average atomic mass of the naturally occurring element X is closest to:
Answer» An element $X$ has the following isotopic composition: $^{200} X - 90 %,^{199} X - 8 %,^{202} X - 2 %$ . The weighted average atomic mass of the naturally occurring element $X$ is closest to:

Discussion

16.	Nitration of benzene by nitric acid and sulphuric acid is:
Answer» Nitration of benzene by nitric acid and sulphuric acid is:

Discussion

17.	What is STP?
Answer» What is STP?

Discussion

18.	The structure and hybridization of Si(CH3)4 is:
Answer» The structure and hybridization of $S i (C H_{3})_{4}$ is:

Discussion

19.	If the density of a solution is 3.12 g mL−1, the mass of 1.5 mL solution in significant figures is ....... (a) 4.7 g (b) 4680×10−3g (c) 4.680 g (d) 46.80 g
Answer» If the density of a solution is $3.12 g m L^{- 1}$ , the mass of 1.5 mL solution in significant figures is ....... (a) 4.7 g (b) $4680 \times 10^{- 3} g$ (c) 4.680 g (d) 46.80 g

19.

If the density of a solution is 3.12 g mL−1, the mass of 1.5 mL solution in significant figures is ....... (a) 4.7 g (b) 4680×10−3g (c) 4.680 g (d) 46.80 g

Answer»

If the density of a solution is $3.12 g m L^{- 1}$ , the mass of 1.5 mL solution in significant figures is .......

(a) 4.7 g (b) $4680 \times 10^{- 3} g$ (c) 4.680 g (d) 46.80 g

Discussion

20.	Which of the following compound does not have restricted rotation?
Answer» Which of the following compound does not have restricted rotation?

Discussion

21.	Caster Kellner cell is used for production of
Answer» Caster Kellner cell is used for production of

Discussion

22.	The halogen which is most reactive in the halogenation of alkanes under sunlight is:
Answer» The halogen which is most reactive in the halogenation of alkanes under sunlight is:

Discussion

23.	Oxygen shows a positive oxidation state in which of the following compounds:
Answer» Oxygen shows a positive oxidation state in which of the following compounds:

Discussion

24.	H2(g) +Cl2(g) → 2HCl(g) ... rate = r1 ; D2(g) +Cl2(g) → 2DCl(g)... rate = r2 ; r1 = r2. Then the correct statement among the following is
Answer» $H_{2}$ $_{(g)}$ + ${C l}_{2}$ $_{(g)}$ $\to$ 2HCl $_{(g)}$ ... rate = $r_{1}$ ; $D_{2}$ $_{(g)}$ + ${C l}_{2}$ $_{(g)}$ $\to$ 2DCl $_{(g)}$ ... rate = $r_{2}$ ; $r_{1}$ = $r_{2}$ . Then the correct statement among the following is

Discussion

25.	Which of the following compound(s) will be optically inactive?
Answer» Which of the following compound(s) will be optically inactive?

Discussion

26.	In large doses, analgesics that work in the brain as antagonists to certain chemicals have caused psychological disturbances in patients, which may limit their potential to relieve severe pain.
Answer» In large doses, analgesics that work in the brain as antagonists to certain chemicals have caused psychological disturbances in patients, which may limit their potential to relieve severe pain.

Discussion

27.	Explain the term copolymerization and give two examples.
Answer» Explain the term copolymerization and give two examples.

Discussion

28.	Show how will you synthesise: 1-phenylethanol form a suitable alkene. Cyclohexylmethanol using an alkyl halide by an SN2 reaction Pentan-1-ol using a suitable alkyl halide?
Answer» Show how will you synthesise: 1-phenylethanol form a suitable alkene. Cyclohexylmethanol using an alkyl halide by an $S_{N} 2$ reaction Pentan-1-ol using a suitable alkyl halide?

28.

Show how will you synthesise: 1-phenylethanol form a suitable alkene. Cyclohexylmethanol using an alkyl halide by an SN2 reaction Pentan-1-ol using a suitable alkyl halide?

Answer»

Show how will you synthesise:
1-phenylethanol form a suitable alkene.

Cyclohexylmethanol using an alkyl halide by an $S_{N} 2$ reaction

Pentan-1-ol using a suitable alkyl halide?

Discussion

29.	From the following statements regarding H2O2, choose the incorrect statement.
Answer» From the following statements regarding $H_{2} O_{2}$ , choose the incorrect statement.

Discussion

30.	Due to Frenkel defect, the density of ionic solids[MP PET 1996; MP PMT 2002]
Answer» Due to Frenkel defect, the density of ionic solids [MP PET 1996; MP PMT 2002]

30.

Due to Frenkel defect, the density of ionic solids[MP PET 1996; MP PMT 2002]

Answer»

Due to Frenkel defect, the density of ionic solids

[MP PET 1996; MP PMT 2002]

Discussion

31.	The sum of the number of lone pairs of electrons on each central atom in the following species is [TeBr6]2−, [BrF2]+, SNF3, [XeF3]− (Atomic numbers: N=7, F=9, S=16, Br=35, Te=52, Xe=54) ___
Answer» The sum of the number of lone pairs of electrons on each central atom in the following species is $[T e B r_{6}]^{2 -}, [B r F_{2}]^{+}, S N F_{3}, [X e F_{3}]^{-}$ (Atomic numbers: N=7, F=9, S=16, Br=35, Te=52, Xe=54) ___

Discussion

32.	Which one is the least stable?
Answer» Which one is the least stable?

Discussion

33.	In a given process for an ideal gas, dW = 0 and dQ < 0. Then for the gas
Answer» In a given process for an ideal gas, dW = 0 and dQ < 0. Then for the gas

Discussion

34.	Explain the formation of a p-n junction diode.
Answer» Explain the formation of a p-n junction diode.

Discussion

35.	In Young’s double slit experiment, the 10th maximum of wavelength λ1 is at a distance y1 from its central maximum and the 5th maximum of wavelength λ2 is at a distance y2 from its central maximum. The ratio of λ1λ2 will be
Answer» In Young’s double slit experiment, the $10^{t h}$ maximum of wavelength $λ_{1}$ is at a distance $y_{1}$ from its central maximum and the 5th maximum of wavelength $λ_{2}$ is at a distance $y_{2}$ from its central maximum. The ratio of $\frac{λ_{1}}{λ_{2}}$ will be

Discussion

36.	The orbital diagram in which the Aufbau's principle is violated: 2s 2px 2py 2pz
Answer» The orbital diagram in which the Aufbau's principle is violated: $2 s 2 p_{x} 2 p_{y} 2 p_{z}$

Discussion

37.	The binary mixture that has the same composition both in the liquid and vapour phase is known as
Answer» The binary mixture that has the same composition both in the liquid and vapour phase is known as

Discussion

38.	Let the solubility of an aqueous solution of Mg(OH)2 be x then its Ksp is
Answer» Let the solubility of an aqueous solution of $M g (O H)_{2}$ be $x$ then its $K_{s p}$ is

38.

Let the solubility of an aqueous solution of Mg(OH)2 be x then its Ksp is

Answer»

Let the solubility of an aqueous solution of $M g (O H)_{2}$ be $x$ then its $K_{s p}$ is

Discussion

39.	Which colour flame does lithium shows
Answer» Which colour flame does lithium shows

Discussion

40.	In Vander Waal equation of state, the constant b is a measure of:
Answer» In Vander Waal equation of state, the constant b is a measure of:

Discussion

41.	The standard heat of combustion of solid boron is equal to:
Answer» The standard heat of combustion of solid boron is equal to:

Discussion

42.	When (S)-2-bromopentane is brominated, several 2, 3-dibromopentane molecules are formed. Which of the following is not formed?
Answer» When (S)-2-bromopentane is brominated, several 2, 3-dibromopentane molecules are formed. Which of the following is not formed?

Discussion

43.	What will be the total number of stereomers in the given figure?
Answer» What will be the total number of stereomers in the given figure?

Discussion

44.	In the reaction, C3H7CONH2P2O5−−−→×Pt,H2−−−→Y Y is
Answer» In the reaction, $C_{3} H_{7} C O N H_{2} P_{2} O_{5} - -- \to \times P t, H_{2} - -- \to Y$ Y is

Discussion

45.	Oxygen molecule is paramagnetic because
Answer» Oxygen molecule is paramagnetic because

Discussion

46.	The ratio of dissociation constant of two weak acids HA and HB is 4. At what molar concentration ratio, the two acids will have same pH in separate solutions:
Answer» The ratio of dissociation constant of two weak acids $H A$ and $H B$ is $4$ . At what molar concentration ratio, the two acids will have same $p H$ in separate solutions:

Discussion

47.	Edge length of the unit cell of NaCl crystal lattice is 552 pm. If ionic radius of Na ion is 95 pm. What is the ionic radius of chloride ion
Answer» Edge length of the unit cell of NaCl crystal lattice is 552 pm. If ionic radius of Na ion is 95 pm. What is the ionic radius of chloride ion

Discussion

48.	Which behaves both as a nucleophile as well as an electrophile?
Answer» Which behaves both as a nucleophile as well as an electrophile?

Discussion

49.	'Aspartame' does not contain
Answer» 'Aspartame' does not contain

Discussion

50.	Aqueous solution of 0.004 M Na2SO4 and 0.01 M glucose are isotonic. The degree of dissociation of Na2SO4 is?
Answer» Aqueous solution of 0.004 M $N a_{2} S O_{4}$ and 0.01 M glucose are isotonic. The degree of dissociation of $N a_{2} S O_{4}$ is?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Homogeneous catalyst is the one

Arrange the following hydrides in their increasing acid strength [CH4, H2S, PH3 and SiH4] -

Which of the following statement is true?

Which of the following is/are molecular solid(s)?

Alkaline earth metals always form divalent cations even though their second ionisation enthalpies are almost double than their first ionisation enthalpies

Hyaluronic acid is made of what

4 moles of A are mixed with 4 moles of B, then 2 moles of C are formed at equilibrium, according to the reaction, A + B ⇌ C + D. The equilibrium constant is :

Write two factors which justify the need of modulating a low frequency signal into high frequencies before transmission.

The relation between temperature and extent of adsorption(x/m) at constant pressure called as:

Poisonous gas 'Lewisite' is obtained by the reaction of

How to give iupac name for mixed ethers?

What mass of CaO will be obtained by heating 3moles of CaCo3?

In solid state BeCl2 has a:

An element X has the following isotopic composition: 200X−90%, 199X−8%, 202X−2%. The weighted average atomic mass of the naturally occurring element X is closest to:

Nitration of benzene by nitric acid and sulphuric acid is:

What is STP?

The structure and hybridization of Si(CH3)4 is:

If the density of a solution is 3.12 g mL−1, the mass of 1.5 mL solution in significant figures is ....... (a) 4.7 g (b) 4680×10−3g (c) 4.680 g (d) 46.80 g

Which of the following compound does not have restricted rotation?

Caster Kellner cell is used for production of

The halogen which is most reactive in the halogenation of alkanes under sunlight is:

Oxygen shows a positive oxidation state in which of the following compounds:

H2(g) +Cl2(g) → 2HCl(g) ... rate = r1 ; D2(g) +Cl2(g) → 2DCl(g)... rate = r2 ; r1 = r2. Then the correct statement among the following is

Which of the following compound(s) will be optically inactive?

In large doses, analgesics that work in the brain as antagonists to certain chemicals have caused psychological disturbances in patients, which may limit their potential to relieve severe pain.

Explain the term copolymerization and give two examples.

Show how will you synthesise: 1-phenylethanol form a suitable alkene. Cyclohexylmethanol using an alkyl halide by an SN2 reaction Pentan-1-ol using a suitable alkyl halide?

From the following statements regarding H2O2, choose the incorrect statement.

Due to Frenkel defect, the density of ionic solids[MP PET 1996; MP PMT 2002]

The sum of the number of lone pairs of electrons on each central atom in the following species is [TeBr6]2−, [BrF2]+, SNF3, [XeF3]− (Atomic numbers: N=7, F=9, S=16, Br=35, Te=52, Xe=54) ___

Which one is the least stable?

In a given process for an ideal gas, dW = 0 and dQ &lt; 0. Then for the gas

Explain the formation of a p-n junction diode.

In Young’s double slit experiment, the 10th maximum of wavelength λ1 is at a distance y1 from its central maximum and the 5th maximum of wavelength λ2 is at a distance y2 from its central maximum. The ratio of λ1λ2 will be

The orbital diagram in which the Aufbau's principle is violated: 2s 2px 2py 2pz

The binary mixture that has the same composition both in the liquid and vapour phase is known as

Let the solubility of an aqueous solution of Mg(OH)2 be x then its Ksp is

Which colour flame does lithium shows

In Vander Waal equation of state, the constant b is a measure of:

The standard heat of combustion of solid boron is equal to:

When (S)-2-bromopentane is brominated, several 2, 3-dibromopentane molecules are formed. Which of the following is not formed?

What will be the total number of stereomers in the given figure?

In the reaction, C3H7CONH2P2O5−−−→×Pt,H2−−−→Y Y is

Oxygen molecule is paramagnetic because

The ratio of dissociation constant of two weak acids HA and HB is 4. At what molar concentration ratio, the two acids will have same pH in separate solutions:

Edge length of the unit cell of NaCl crystal lattice is 552 pm. If ionic radius of Na ion is 95 pm. What is the ionic radius of chloride ion

Which behaves both as a nucleophile as well as an electrophile?

'Aspartame' does not contain

Aqueous solution of 0.004 M Na2SO4 and 0.01 M glucose are isotonic. The degree of dissociation of Na2SO4 is?

In a given process for an ideal gas, dW = 0 and dQ < 0. Then for the gas