46295 + Interview Questions in Chemistry

1.	Thermal decomposition of which of the following does/do not give N2 gas?
Answer» Thermal decomposition of which of the following does/do not give $N_{2}$ gas?

Discussion

2.	Which of the following compound is having maximum number of atoms in same plane?
Answer» Which of the following compound is having maximum number of atoms in same plane?

Discussion

3.	Nitric acid does not react with which of the following metals?
Answer» Nitric acid does not react with which of the following metals?

Discussion

4.	The dissociation constant of 0.01M CH3COOH is 1.8×10−5 then calculate CH3COO− concentration in 0.1M HCl solution.
Answer» The dissociation constant of $0.01 M C H_{3} C O O H$ is $1.8 \times 10^{- 5}$ then calculate $C H_{3} C O O^{-}$ concentration in $0.1 M H C l$ solution.

Discussion

5.	How many products are formed from the monochlorination of ethylcyclohexane? (Ignore the stereoisomers)
Answer» How many products are formed from the monochlorination of ethylcyclohexane? (Ignore the stereoisomers)

Discussion

6.	Which is true about following?
Answer» Which is true about following?

Discussion

7.	Among the following atomic orbital overlap, the non-bonding overlap is:
Answer» Among the following atomic orbital overlap, the non-bonding overlap is:

Discussion

8.	In each of the following questions, an Assertion (A) is followed by a corresponding Reason (R). Use the following keys to choose the appropriate answer. Assertion (A): If 30 mL of H2 and 20 mL of O2 react to form water, 5 mL of H2 is left at the end of the reaction. Reason (R): H2 is the limiting reagent.
Answer» In each of the following questions, an Assertion (A) is followed by a corresponding Reason (R). Use the following keys to choose the appropriate answer. Assertion (A): If 30 mL of $H_{2}$ and 20 mL of $O_{2}$ react to form water, 5 mL of $H_{2}$ is left at the end of the reaction. Reason (R): $H_{2}$ is the limiting reagent.

Discussion

9.	When ethylene glycol is heated with oxalic acid in the presence of conc. H2SO4, the product formed is:
Answer» When ethylene glycol is heated with oxalic acid in the presence of conc. $H_{2} S O_{4}$ , the product formed is:

Discussion

10.	Which of the following statement is correct regarding alkali metals
Answer» Which of the following statement is correct regarding alkali metals

Discussion

11.	What mass of CaCO3 is required to react completely with 25ml of 0.75M of HCL.
Answer» What mass of CaCO₃ is required to react completely with 25ml of 0.75M of HCL.

Discussion

12.	The number of possible spatial orientations of an electron in an atom is given by its
Answer» The number of possible spatial orientations of an electron in an atom is given by its

Discussion

13.	The vapour pressure of Benzene at 25∘ is 639.7mm of Hg. The vapour pressure of a solution of benzene at same temperature is 631.9 mm of Hg. The molality of solution is:
Answer» The vapour pressure of Benzene at $25^{\circ}$ is 639.7mm of Hg. The vapour pressure of a solution of benzene at same temperature is 631.9 mm of Hg. The molality of solution is:

Discussion

14.	In nuclear transmutation Tritium is obtained from
Answer» In nuclear transmutation Tritium is obtained from

Discussion

15.	Physical adsorption
Answer» Physical adsorption

Discussion

16.	The van der Waals’ constants for a gas are; a=3.6 atm L2 mol2, b=0.6 L mol−1. If R=0.08 L atm K−1. If the Boyle's temperature (K) of this gas is TB, then what is the value of TB15?
Answer» The van der Waals’ constants for a gas are; $a = 3.6 {atm L}^{2} {mol}^{2}$ , $b = 0.6 {L mol}^{- 1}$ . If $R = 0.08 {L atm K}^{- 1}$ . If the Boyle's temperature $(K)$ of this gas is $T_{B}$ , then what is the value of $\frac{T_{B}}{15}$ ?

Discussion

17.	The compound which contains both ionic and covalent bonds is:
Answer» The compound which contains both ionic and covalent bonds is:

Discussion

18.	The reaction of the bromo compound shown below with sodium ethoxide gives predominantly:
Answer» The reaction of the bromo compound shown below with sodium ethoxide gives predominantly:

Discussion

19.	Which of the following compound has the highest lattice energy?
Answer» Which of the following compound has the highest lattice energy?

Discussion

20.	Find the total number of oxygen atoms in 5×106 formula units of the complex [Co(H2O)6]Cl2.
Answer» Find the total number of oxygen atoms in $5 \times 10^{6}$ formula units of the complex $[C o (H_{2} O)_{6}] C l_{2} .$

Discussion

21.	What is minerals
Answer» What is minerals

Discussion

22.	The coefficient of volume expansion of an ideal diatomic gas, for a reversible adiabatic process is
Answer» The coefficient of volume expansion of an ideal diatomic gas, for a reversible adiabatic process is

Discussion

23.	What are nucleophile and electrophile
Answer» What are nucleophile and electrophile

Discussion

24.	Which reaction(s) can produce 2o amine as major product?
Answer» Which reaction(s) can produce $2^{o}$ amine as major product?

Discussion

25.	Two equilibria exist simultaneously in a vessel at 25∘C NO(g)+NO2(g)KP1=0.4 atm−1⇌N2O3(g) 2NO2(g)KP2=8 atm−1⇌N2O4(g) If initially only NO and NO2 are present in a 3:5 mole ratio and the final pressure at equilibrium of NO2 at 0.5 atm, then calculate total pressure (in atm) at equilibrium.
Answer» Two equilibria exist simultaneously in a vessel at $25^{\circ} C$ $\begin{matrix} N O (g) & + & N O_{2} (g) & K_{P 1} = 0.4 a t m^{- 1} ⇌ & N_{2} O_{3} (g) \end{matrix}$ $\begin{matrix} 2 N O_{2} (g) & K_{P 2} = 8 a t m^{- 1} ⇌ & N_{2} O_{4} (g) \end{matrix}$ If initially only $N O$ and $N O_{2}$ are present in a 3:5 mole ratio and the final pressure at equilibrium of $N O_{2}$ at 0.5 atm, then calculate total pressure (in atm) at equilibrium.

Discussion

26.	Packing fraction is maximum in which of the following?
Answer» Packing fraction is maximum in which of the following?

Discussion

27.	1s2;2s22p6;3s2,3p6;4s2. The given electronic configuration represents which group?
Answer» $1 s^{2}; 2 s^{2} 2 p^{6}; 3 s^{2}, 3 p^{6}; 4 s^{2}$ . The given electronic configuration represents which group?

Discussion

28.	For the conversion of 1 mole of SO2 (g) into SO3 (g) the enthalpy of reaction at constant volume, Δ U at 298 K is −97.027 KJ. What is the enthalpy of reaction, Δ H at constant pressure?
Answer» For the conversion of 1 mole of $S O_{2} (g)$ into $S O_{3} (g)$ the enthalpy of reaction at constant volume, $Δ U$ at $298 K$ is $- 97.027 K J$ . What is the enthalpy of reaction, $Δ H$ at constant pressure?

Discussion

29.	Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy ?
Answer» Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy ?

Discussion

30.	Sn reacts with sodium hydroxide solution to form Sn + 2NaOH + H2O → _____ + 2H2
Answer» Sn reacts with sodium hydroxide solution to form $S n + 2 N a O H + H_{2} O \to$ _____ $+ 2 H_{2}$

30.

Sn reacts with sodium hydroxide solution to form Sn + 2NaOH + H2O → _____ + 2H2

Answer»

Sn reacts with sodium hydroxide solution to form

$S n + 2 N a O H + H_{2} O \to$ _____ $+ 2 H_{2}$

Discussion

31.	Electron gain enthalpy of F− is
Answer» Electron gain enthalpy of $F^{-}$ is

Discussion

32.	What is the functional units of polymers
Answer» What is the functional units of polymers

Discussion

33.	The % composition of O and H present in monosodium phosphate is respectively:
Answer» The % composition of $O$ and $H$ present in monosodium phosphate is respectively:

Discussion

34.	Correct order of electronegativity difference between bonded atoms is:
Answer» Correct order of electronegativity difference between bonded atoms is:

Discussion

35.	PVC have more intermolecular force of attraction than natural rubber?
Answer» PVC have more intermolecular force of attraction than natural rubber?

Discussion

36.	Does Vacuum and No Gravity makes same sense? Give reasom for your answer.
Answer» Does Vacuum and No Gravity makes same sense? Give reasom for your answer.

Discussion

37.	How to know if the element is metal or a non metal
Answer» How to know if the element is metal or a non metal

Discussion

38.	The solubility of PbCl2 in water is 0.01 M at 25∘ C. Its maximum concentration in 0.1 M NaCl will be:
Answer» The solubility of $P b C l_{2}$ in water is $0.01 M a t 25^{\circ} C$ . Its maximum concentration in $0.1 M N a C l$ will be:

Discussion

39.	The ratio of the distances with the nearest neighbours in a body centered cubic (BCC) and a face centered cubic (FCC) crystals with the same unit cell edge length is:
Answer» The ratio of the distances with the nearest neighbours in a body centered cubic (BCC) and a face centered cubic (FCC) crystals with the same unit cell edge length is:

Discussion

40.	Give reasons for the following: (i) Transition elements and their compounds act as catalysts. (ii) E0 value for (Mn2+\|Mn) is negative whereas for (Cu2+\|Cu) is positive. (iii) Actinoids show irregularities in their electronic configuration.
Answer» Give reasons for the following: (i) Transition elements and their compounds act as catalysts. (ii) $E^{0}$ value for $(M n^{2 +} \| M n)$ is negative whereas for $(C u^{2 +} \| C u)$ is positive. (iii) Actinoids show irregularities in their electronic configuration.

Discussion

41.	NH3 formed at equilibrium is neutralized by 200 ml of 1 molar HCL calculate equilibrium constant?
Answer» NH3 formed at equilibrium is neutralized by 200 ml of 1 molar HCL calculate equilibrium constant?

Discussion

42.	How does a metal oxide becomes unstable and decomposes when gibbs free energy becomes positive?
Answer» How does a metal oxide becomes unstable and decomposes when gibbs free energy becomes positive?

Discussion

43.	What is the range of magnetic quantum number ?
Answer» What is the range of magnetic quantum number ?

Discussion

44.	Insulin contains 3.4% sulphur by mass. What will be the minimum molecular weight of insulin?
Answer» Insulin contains $3.4 %$ sulphur by mass. What will be the minimum molecular weight of insulin?

Discussion

45.	Why is the oxide in the higher oxidation state of the element more acidic than the one in lower oxidation state?
Answer» Why is the oxide in the higher oxidation state of the element more acidic than the one in lower oxidation state?

Discussion

46.	What is the formula for determining the percentage of water absorbed by raisins? State one precaution for this experiment.
Answer» What is the formula for determining the percentage of water absorbed by raisins? State one precaution for this experiment.

Discussion

47.	What is Kgf ?
Answer» What is Kgf ?

Discussion

48.	Find the number of sodium and sulphate ions in 14.2g of sodium sulphate.
Answer» Find the number of sodium and sulphate ions in 14.2g of sodium sulphate.

Discussion

49.	Structure of some important polymers is given. Which one represents Buna-S?
Answer» Structure of some important polymers is given. Which one represents Buna-S?

Discussion

50.	If two hydrogen atoms of ammonia are replaced by alkyl group then the amine is:
Answer» If two hydrogen atoms of ammonia are replaced by alkyl group then the amine is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Thermal decomposition of which of the following does/do not give N2 gas?

Which of the following compound is having maximum number of atoms in same plane?

Nitric acid does not react with which of the following metals?

The dissociation constant of 0.01M CH3COOH is 1.8×10−5 then calculate CH3COO− concentration in 0.1M HCl solution.

How many products are formed from the monochlorination of ethylcyclohexane? (Ignore the stereoisomers)

Which is true about following?

Among the following atomic orbital overlap, the non-bonding overlap is:

When ethylene glycol is heated with oxalic acid in the presence of conc. H2SO4, the product formed is:

Which of the following statement is correct regarding alkali metals

What mass of CaCO3 is required to react completely with 25ml of 0.75M of HCL.

The number of possible spatial orientations of an electron in an atom is given by its

The vapour pressure of Benzene at 25∘ is 639.7mm of Hg. The vapour pressure of a solution of benzene at same temperature is 631.9 mm of Hg. The molality of solution is:

In nuclear transmutation Tritium is obtained from

Physical adsorption

The van der Waals’ constants for a gas are; a=3.6 atm L2 mol2, b=0.6 L mol−1. If R=0.08 L atm K−1. If the Boyle's temperature (K) of this gas is TB, then what is the value of TB15?

The compound which contains both ionic and covalent bonds is:

The reaction of the bromo compound shown below with sodium ethoxide gives predominantly:

Which of the following compound has the highest lattice energy?

Find the total number of oxygen atoms in 5×106 formula units of the complex [Co(H2O)6]Cl2.

What is minerals

The coefficient of volume expansion of an ideal diatomic gas, for a reversible adiabatic process is

What are nucleophile and electrophile

Which reaction(s) can produce 2o amine as major product?

Two equilibria exist simultaneously in a vessel at 25∘C NO(g)+NO2(g)KP1=0.4 atm−1⇌N2O3(g) 2NO2(g)KP2=8 atm−1⇌N2O4(g) If initially only NO and NO2 are present in a 3:5 mole ratio and the final pressure at equilibrium of NO2 at 0.5 atm, then calculate total pressure (in atm) at equilibrium.

Packing fraction is maximum in which of the following?

1s2;2s22p6;3s2,3p6;4s2. The given electronic configuration represents which group?

For the conversion of 1 mole of SO2 (g) into SO3 (g) the enthalpy of reaction at constant volume, Δ U at 298 K is −97.027 KJ. What is the enthalpy of reaction, Δ H at constant pressure?

Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy ?

Sn reacts with sodium hydroxide solution to form Sn + 2NaOH + H2O → _____ + 2H2

Electron gain enthalpy of F− is

What is the functional units of polymers

The % composition of O and H present in monosodium phosphate is respectively:

Correct order of electronegativity difference between bonded atoms is:

PVC have more intermolecular force of attraction than natural rubber?

Does Vacuum and No Gravity makes same sense? Give reasom for your answer.

How to know if the element is metal or a non metal

The solubility of PbCl2 in water is 0.01 M at 25∘ C. Its maximum concentration in 0.1 M NaCl will be:

The ratio of the distances with the nearest neighbours in a body centered cubic (BCC) and a face centered cubic (FCC) crystals with the same unit cell edge length is:

Give reasons for the following: (i) Transition elements and their compounds act as catalysts. (ii) E0 value for (Mn2+|Mn) is negative whereas for (Cu2+|Cu) is positive. (iii) Actinoids show irregularities in their electronic configuration.

NH3 formed at equilibrium is neutralized by 200 ml of 1 molar HCL calculate equilibrium constant?

How does a metal oxide becomes unstable and decomposes when gibbs free energy becomes positive?

What is the range of magnetic quantum number ?

Insulin contains 3.4% sulphur by mass. What will be the minimum molecular weight of insulin?

Why is the oxide in the higher oxidation state of the element more acidic than the one in lower oxidation state?

What is the formula for determining the percentage of water absorbed by raisins? State one precaution for this experiment.

What is Kgf ?

Find the number of sodium and sulphate ions in 14.2g of sodium sulphate.

Structure of some important polymers is given. Which one represents Buna-S?

If two hydrogen atoms of ammonia are replaced by alkyl group then the amine is: