46295 + Interview Questions in Chemistry

1.	All energetically effective collisions do not result in a chemical change. Explain with the help of an example.
Answer» All energetically effective collisions do not result in a chemical change. Explain with the help of an example.

Discussion

2.	In which of the following pairs the two species are not isostructural
Answer» In which of the following pairs the two species are not isostructural

Discussion

3.	Which property is same for both hidrogen and deuterium?
Answer» Which property is same for both hidrogen and deuterium?

Discussion

4.	Total number of geometrical and optical isomers shown by [Pt(en)Br2Cl2] is:
Answer» Total number of geometrical and optical isomers shown by $[P t (e n) B r_{2} C l_{2}]$ is:

Discussion

5.	Ratio of moles of Fe(\|\|) oxidised by equal volumes of equimolar KMnO4 and K2Cr2O7 solutions in acidic medium will be:
Answer» Ratio of moles of Fe(\|\|) oxidised by equal volumes of equimolar KMnO₄ and K₂Cr₂O₇ solutions in acidic medium will be:

Discussion

6.	Sulphur dioxide and oxygen react according to the equation :- 2SO2(g)+O2(g)→2SO3(g).If 50.0 g of SO2(g) is added to a flask resulting in a pressure of 0.750 atm.What will be the total pressure in the flask when a stochiometric amount of oxygen is added?What is the pressure after the completion of reaction and before the beginning of the reaction (with O2 just added)?
Answer» Sulphur dioxide and oxygen react according to the equation :- $2 S O_{2} (g) + O_{2} (g) \to 2 S O_{3} (g)$ .If 50.0 g of $S O_{2}$ (g) is added to a flask resulting in a pressure of 0.750 atm.What will be the total pressure in the flask when a stochiometric amount of oxygen is added?What is the pressure after the completion of reaction and before the beginning of the reaction (with $O_{2}$ just added)?

Discussion

7.	Power alcohol is[KCET 1990]
Answer» Power alcohol is[KCET 1990]

Discussion

8.	How to convert benzaldehyde to benzoic acid
Answer» How to convert benzaldehyde to benzoic acid

Discussion

9.	Which M--M bond has highest bond energy -
Answer» Which M--M bond has highest bond energy -

Discussion

10.	Which one of the halogen acids is a liquid
Answer» Which one of the halogen acids is a liquid

Discussion

11.	The equilibrium constant for the following reaction is 1.6×105 at 1024 K H2 (g)+Br2 (g)⇌2HBr (g) Find the equilibrium pressure of H2 gas if 10.0 bar of HBr is introduced into a sealed container at 1024 K.
Answer» The equilibrium constant for the following reaction is $1.6 \times 10^{5}$ at $1024 K$ $H_{2} (g) + B r_{2} (g) ⇌ 2 H B r (g)$ Find the equilibrium pressure of $H_{2}$ gas if $10.0 b a r$ of $H B r$ is introduced into a sealed container at $1024 K$ .

Discussion

12.	When excess of ammonia reacts with bleach, it can form:
Answer» When excess of ammonia reacts with bleach, it can form:

Discussion

13.	The best electrolyte for coagulation of As2S3 solution is
Answer» The best electrolyte for coagulation of $A s_{2} S_{3}$ solution is

Discussion

14.	Which of the following is the correct decreasing order of the stability using concept of inductive effect? (i) CH3−+CH−CH2−OCH3 (ii) CH3−+CH−CH2−CH3 (iii) CH3−+CH−O\|\|C−CH3
Answer» Which of the following is the correct decreasing order of the stability using concept of inductive effect? $(i) C H_{3} - + C H - C H_{2} - O C H_{3}$ $(i i) C H_{3} - + C H - C H_{2} - C H_{3}$ $(i i i) C H_{3} - + C H - O \| \| C - C H_{3}$

Discussion

15.	Refer to the periodic table given in your book and now answer the following questions: Select the possible non metals that can show disproportaionation reaction. Select three metals that can show disproportionation reaction.
Answer» Refer to the periodic table given in your book and now answer the following questions: Select the possible non metals that can show disproportaionation reaction. Select three metals that can show disproportionation reaction.

15.

Refer to the periodic table given in your book and now answer the following questions: Select the possible non metals that can show disproportaionation reaction. Select three metals that can show disproportionation reaction.

Answer»

Refer to the periodic table given in your book and now answer the following questions:
Select the possible non metals that can show disproportaionation reaction.

Select three metals that can show disproportionation reaction.

Discussion

16.	What is the ratio of the energies of two radiations in which one has a wavelength of 6000 ∘A the other has a wavelength of 2000 ∘A?
Answer» What is the ratio of the energies of two radiations in which one has a wavelength of $6000 \circ A$ the other has a wavelength of $2000 \circ A$ ?

Discussion

17.	Which of the following dihedral angle is not possible in skew conformation?
Answer» Which of the following dihedral angle is not possible in skew conformation?

Discussion

18.	Hydrogen can be obtained from water, by the action of water on
Answer» Hydrogen can be obtained from water, by the action of water on

Discussion

19.	The IUPAC name of the compound
Answer» The IUPAC name of the compound

Discussion

20.	Di-imide (N2h4) is used to reduce double bond of:
Answer» Di-imide $(N_{2} h_{4})$ is used to reduce double bond of:

Discussion

21.	Which of the following should be most volatile? I)CH3CH2CH2NH2 II) (CH3)3N III) IV) CH3CH2 CH2 CH3
Answer» Which of the following should be most volatile? I)CH₃CH₂CH₂NH₂ II) (CH₃)₃N III) IV) CH₃CH₂ CH₂ CH₃

Discussion

22.	Which has no rotation of symmetry[Orrisa JEE 2004]
Answer» Which has no rotation of symmetry [Orrisa JEE 2004]

22.

Which has no rotation of symmetry[Orrisa JEE 2004]

Answer»

Which has no rotation of symmetry

[Orrisa JEE 2004]

Discussion

23.	The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order. K2CO3 (I) MgCO3 (II) CaCO3 (III) BeCO3 (IV)
Answer» The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order. $K_{2} C O_{3}$ (I) $M g C O_{3}$ (II) $C a C O_{3}$ (III) $B e C O_{3}$ (IV)

23.

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order. K2CO3 (I) MgCO3 (II) CaCO3 (III) BeCO3 (IV)

Answer»

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order.
$K_{2} C O_{3}$ (I) $M g C O_{3}$ (II) $C a C O_{3}$
(III) $B e C O_{3}$ (IV)

Discussion

24.	When the ls orbitals of two hydrogen atoms combine to form a hydrogen molecule, which molecular orbitals are formed?
Answer» When the ls orbitals of two hydrogen atoms combine to form a hydrogen molecule, which molecular orbitals are formed?

Discussion

25.	If SR = 100 torr and PR = 350 torr then the mole fraction of A in vapour phase and mole fraction of A in liquid phase respectively are:
Answer» If SR = 100 torr and PR = 350 torr then the mole fraction of $A$ in vapour phase and mole fraction of $A$ in liquid phase respectively are:

Discussion

26.	Compounds showing cannizaro’s reaction are (i) CH3CH2CHO (ii) CHCl2CHO (iii) (CH3)3C−CHO (iv) C6H5CHO
Answer» Compounds showing cannizaro’s reaction are $(i) C H_{3} C H_{2} C H O (i i) C H C l_{2} C H O (i i i) (C H_{3})_{3} C - C H O (i v) C_{6} H_{5} C H O$

26.

Compounds showing cannizaro’s reaction are (i) CH3CH2CHO (ii) CHCl2CHO (iii) (CH3)3C−CHO (iv) C6H5CHO

Answer»

Compounds showing cannizaro’s reaction are

$(i) C H_{3} C H_{2} C H O (i i) C H C l_{2} C H O (i i i) (C H_{3})_{3} C - C H O (i v) C_{6} H_{5} C H O$

Discussion

27.	Calculate the efficiency of packing in case of a metal crystal for (i) Simple cubic (ii) Body - centred cubic (iii) Face-centred cubic (with the assumptions that atoms are touching each other).
Answer» Calculate the efficiency of packing in case of a metal crystal for (i) Simple cubic (ii) Body - centred cubic (iii) Face-centred cubic (with the assumptions that atoms are touching each other).

27.

Calculate the efficiency of packing in case of a metal crystal for (i) Simple cubic (ii) Body - centred cubic (iii) Face-centred cubic (with the assumptions that atoms are touching each other).

Answer»

Calculate the efficiency of packing in case of a metal crystal for

(i) Simple cubic

(ii) Body - centred cubic

(iii) Face-centred cubic (with the assumptions that atoms are touching each other).

Discussion

28.	What are the major causes of water pollution? Explain.
Answer» What are the major causes of water pollution? Explain.

Discussion

29.	Which out of NH3 and NF3 has higher dipole moment and why?
Answer» Which out of $N H_{3}$ and $N F_{3}$ has higher dipole moment and why?

Discussion

30.	Why is adsorption always exothermic ?
Answer» Why is adsorption always exothermic ?

Discussion

31.	For the photoelectric effect in sodium, the figure shows the plot of cut-off voltage versus frequency of incident radiation. The threshold frequency is:
Answer» For the photoelectric effect in sodium, the figure shows the plot of cut-off voltage versus frequency of incident radiation. The threshold frequency is:

Discussion

32.	Extraction of gold and silver involves leaching the metal wish CN− ion the metal in recovered by ___
Answer» Extraction of gold and silver involves leaching the metal wish $C N^{-}$ ion the metal in recovered by ___

Discussion

33.	If an electron in hydrogen atom jumps from an orbit of level n = 3 to an orbit of level n = 2, the emitted radiation has a frequency (R = Rydberg constant., C = velocity of light)
Answer» If an electron in hydrogen atom jumps from an orbit of level n = 3 to an orbit of level n = 2, the emitted radiation has a frequency (R = Rydberg constant., C = velocity of light)

Discussion

34.	If the law of conservation of mass was to hold true, then 20.8 g of BaCl2 on reaction with 9.8 g of H2SO4 will produce 7.3 gm of HCl and what mass of BaSO4?
Answer» If the law of conservation of mass was to hold true, then $20.8 g$ of $B a C l_{2}$ on reaction with $9.8 g$ of $H_{2} S O_{4}$ will produce $7.3 gm$ of $H C l$ and what mass of $B a S O_{4}$ ?

Discussion

35.	The normality of 1.11 g of CaCl2 dissolved in 250 mL solution is .
Answer» The normality of $1.11 g$ of $C a C l_{2}$ dissolved in $250 m L$ solution is .

Discussion

36.	Decreasing order of rate of reaction of compounds towards electrophilic addition reaction with HBr is :
Answer» Decreasing order of rate of reaction of compounds towards electrophilic addition reaction with $H B r$ is :

Discussion

37.	Biodegradable polymer which can be produced from glycine and aminocaproic acid is
Answer» Biodegradable polymer which can be produced from glycine and aminocaproic acid is

Discussion

38.	What is meant by partly oxidised?
Answer» What is meant by partly oxidised?

Discussion

39.	For the reaction, H2 (g) + I2)(g)⇋ 2HI(g) which of the following holds good?
Answer» For the reaction, $H_{2}$ (g) + $I_{2}) (g) ⇋$ 2HI(g) which of the following holds good?

Discussion

40.	Which of the following compounds has the maximum covalent character?
Answer» Which of the following compounds has the maximum covalent character?

Discussion

41.	Plaster of paris is
Answer» Plaster of paris is

Discussion

42.	Which of these graphs represent(s) the process explained in the previous question?
Answer» Which of these graphs represent(s) the process explained in the previous question?

Discussion

43.	Which of the following curves represents Henry’s law ?
Answer» Which of the following curves represents Henry’s law ?

Discussion

44.	Look at the following diagram The enthalpy change for the reaction A→B will be:
Answer» Look at the following diagram The enthalpy change for the reaction $A \to B$ will be:

Discussion

45.	Which one of the following does not exist? (i) XeOF4 (ii) NeF2 (iii) XeF2 (iv) XeF6
Answer» Which one of the following does not exist? (i) $X e O F_{4}$ (ii) $N e F_{2}$ (iii) $X e F_{2}$ (iv) $X e F_{6}$

45.

Which one of the following does not exist? (i) XeOF4 (ii) NeF2 (iii) XeF2 (iv) XeF6

Answer»

Which one of the following does not exist?

(i) $X e O F_{4}$

(ii) $N e F_{2}$

(iii) $X e F_{2}$

(iv) $X e F_{6}$

Discussion

46.	Which of the following group is a chromophore?
Answer» Which of the following group is a chromophore?

Discussion

47.	Write an example of a metal oxide like copper in its conductivity & appearance
Answer» Write an example of a metal oxide like copper in its conductivity & appearance

Discussion

48.	Which of the following deviates from the rest in geometry?
Answer» Which of the following deviates from the rest in geometry?

Discussion

49.	The order of equivalence conductance at infinite dilution of LiCl,KCl,NaCl
Answer» The order of equivalence conductance at infinite dilution of LiCl,KCl,NaCl

Discussion

50.	Theory of ionization was given by
Answer» Theory of ionization was given by

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

All energetically effective collisions do not result in a chemical change. Explain with the help of an example.

In which of the following pairs the two species are not isostructural

Which property is same for both hidrogen and deuterium?

Total number of geometrical and optical isomers shown by [Pt(en)Br2Cl2] is:

Ratio of moles of Fe(||) oxidised by equal volumes of equimolar KMnO4 and K2Cr2O7 solutions in acidic medium will be:

Power alcohol is[KCET 1990]

How to convert benzaldehyde to benzoic acid

Which M--M bond has highest bond energy -

Which one of the halogen acids is a liquid

The equilibrium constant for the following reaction is 1.6×105 at 1024 K H2 (g)+Br2 (g)⇌2HBr (g) Find the equilibrium pressure of H2 gas if 10.0 bar of HBr is introduced into a sealed container at 1024 K.

When excess of ammonia reacts with bleach, it can form:

The best electrolyte for coagulation of As2S3 solution is

Which of the following is the correct decreasing order of the stability using concept of inductive effect? (i) CH3−+CH−CH2−OCH3 (ii) CH3−+CH−CH2−CH3 (iii) CH3−+CH−O||C−CH3

Refer to the periodic table given in your book and now answer the following questions: Select the possible non metals that can show disproportaionation reaction. Select three metals that can show disproportionation reaction.

What is the ratio of the energies of two radiations in which one has a wavelength of 6000 ∘A the other has a wavelength of 2000 ∘A?

Which of the following dihedral angle is not possible in skew conformation?

Hydrogen can be obtained from water, by the action of water on

The IUPAC name of the compound

Di-imide (N2h4) is used to reduce double bond of:

Which of the following should be most volatile? I)CH3CH2CH2NH2 II) (CH3)3N III) IV) CH3CH2 CH2 CH3

Which has no rotation of symmetry[Orrisa JEE 2004]

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order. K2CO3 (I) MgCO3 (II) CaCO3 (III) BeCO3 (IV)

When the ls orbitals of two hydrogen atoms combine to form a hydrogen molecule, which molecular orbitals are formed?

If SR = 100 torr and PR = 350 torr then the mole fraction of A in vapour phase and mole fraction of A in liquid phase respectively are:

Compounds showing cannizaro’s reaction are (i) CH3CH2CHO (ii) CHCl2CHO (iii) (CH3)3C−CHO (iv) C6H5CHO

Calculate the efficiency of packing in case of a metal crystal for (i) Simple cubic (ii) Body - centred cubic (iii) Face-centred cubic (with the assumptions that atoms are touching each other).

What are the major causes of water pollution? Explain.

Which out of NH3 and NF3 has higher dipole moment and why?

Why is adsorption always exothermic ?

For the photoelectric effect in sodium, the figure shows the plot of cut-off voltage versus frequency of incident radiation. The threshold frequency is:

Extraction of gold and silver involves leaching the metal wish CN− ion the metal in recovered by ___

If an electron in hydrogen atom jumps from an orbit of level n = 3 to an orbit of level n = 2, the emitted radiation has a frequency (R = Rydberg constant., C = velocity of light)

If the law of conservation of mass was to hold true, then 20.8 g of BaCl2 on reaction with 9.8 g of H2SO4 will produce 7.3 gm of HCl and what mass of BaSO4?

The normality of 1.11 g of CaCl2 dissolved in 250 mL solution is .

Decreasing order of rate of reaction of compounds towards electrophilic addition reaction with HBr is :

Biodegradable polymer which can be produced from glycine and aminocaproic acid is

What is meant by partly oxidised?

For the reaction, H2 (g) + I2)(g)⇋ 2HI(g) which of the following holds good?

Which of the following compounds has the maximum covalent character?

Plaster of paris is

Which of these graphs represent(s) the process explained in the previous question?

Which of the following curves represents Henry’s law ?

Look at the following diagram The enthalpy change for the reaction A→B will be:

Which one of the following does not exist? (i) XeOF4 (ii) NeF2 (iii) XeF2 (iv) XeF6

Which of the following group is a chromophore?

Write an example of a metal oxide like copper in its conductivity & appearance

Which of the following deviates from the rest in geometry?

The order of equivalence conductance at infinite dilution of LiCl,KCl,NaCl

Theory of ionization was given by