46295 + Interview Questions in Chemistry

1.	Name the substance which can be used as a catalyst and an oxidising agent.
Answer» Name the substance which can be used as a catalyst and an oxidising agent.

Discussion

2.	Which of these is used as reference for relative atomic mass?
Answer» Which of these is used as reference for relative atomic mass?

Discussion

3.	The end product 'C' of the above reaction is:
Answer» The end product 'C' of the above reaction is:

Discussion

4.	The diameter of atoms forming a closed packed structure in the given figure is 4×10−8 cm. The maximum radius of the atom occupying the space in between is ×10−8 cm.
Answer» The diameter of atoms forming a closed packed structure in the given figure is $4 \times 10^{- 8}$ cm. The maximum radius of the atom occupying the space in between is $\times 10^{- 8}$ cm.

Discussion

5.	What are isotonic solutions?
Answer» What are isotonic solutions?

Discussion

6.	A carbon compound containing carbon and oxygen has approximate molar mass equal to 290. On analysis it is found to contain 50% by mass of each element. Therefore molecular formula of the compound is
Answer» A carbon compound containing carbon and oxygen has approximate molar mass equal to $290$ . On analysis it is found to contain 50% by mass of each element. Therefore molecular formula of the compound is

Discussion

7.	A hypothetical sub-atomic particle has a mass 49.1 times of an electron and a charge equal to that of a proton. Calculate the charge to mass ratio.
Answer» A hypothetical sub-atomic particle has a mass $\frac{4}{9.1}$ times of an electron and a charge equal to that of a proton. Calculate the charge to mass ratio.

Discussion

8.	The final product formed in the following reaction is:
Answer» The final product formed in the following reaction is:

Discussion

9.	The heat for a reaction, C10H8 (s)+12O2 (g)→10CO2 (g)+4H2O (l) at constant volume is given as −1228.2 kcal at 25oC. The heat of the reaction at constant pressure and same temperature is:
Answer» The heat for a reaction, $C_{10} H_{8} (s) + 12 O_{2} (g) \to 10 C O_{2} (g) + 4 H_{2} O (l)$ at constant volume is given as $- 1228.2 k c a l$ at $25^{o} C$ . The heat of the reaction at constant pressure and same temperature is:

Discussion

10.	Find the pH of 10-6 M and 10-8 M of HCl
Answer» Find the pH of 10^-6M and 10^-8M of HCl

Discussion

11.	'n' moles of an ideal gas undergoes a process A→B as shown in the figure. The maximum temperature of the gas during the process will be
Answer» ' $n$ ' moles of an ideal gas undergoes a process A $\to$ B as shown in the figure. The maximum temperature of the gas during the process will be

Discussion

12.	Why do amino acids have high melting point ?
Answer» Why do amino acids have high melting point ?

Discussion

13.	Why E2O3 is more acidic than E2O5(group 15)
Answer» Why E₂O₃is more acidic than E₂O₅(group 15)

Discussion

14.	3g of H2 react with 29g of O2 to yield H2O, which is the limiting reactant? Calculate the maximum amount of H2O that can be formed. Calculate the amount of the reactant which remains unreacted.
Answer» 3g of H₂ react with 29g of O₂ to yield H₂O, which is the limiting reactant? Calculate the maximum amount of H₂O that can be formed. Calculate the amount of the reactant which remains unreacted.

Discussion

15.	Hydration of the following alkene gives which of the follwing alcohols
Answer» Hydration of the following alkene gives which of the follwing alcohols

15.

Hydration of the following alkene gives which of the follwing alcohols

Answer»

Hydration of the following alkene gives which of the follwing alcohols

Discussion

16.	The freezing point of a solution containing 10 g of K3[Fe(CN)6] (mol wt. 329) in 200 gram of water (Kf=1.86 K Kg mol−1) is:
Answer» The freezing point of a solution containing 10 g of $K_{3} [F e (C N)_{6}]$ (mol wt. 329) in 200 gram of water $(K_{f} = 1.86 K K g m o l^{- 1})$ is:

Discussion

17.	Which of the following is formed in reaction mechanism of halogenation of alkanes in presence of UV light?
Answer» Which of the following is formed in reaction mechanism of halogenation of alkanes in presence of UV light?

Discussion

18.	The number of hyperconjugative structures involving C-H bond resonance are :
Answer» The number of hyperconjugative structures involving C-H bond resonance are :

Discussion

19.	Which of the following 0.10m aqueous solutions will cause highest depression in freezing point?
Answer» Which of the following 0.10m aqueous solutions will cause highest depression in freezing point?

Discussion

20.	[Co(NH3)4Cl2]NO2 and [Co(NH3)4Cl(NO2)]Cl exhibit which type of isomerism?
Answer» [Co(NH₃)₄Cl₂]NO₂and [Co(NH₃)₄Cl(NO₂)]Cl exhibit which type of isomerism?

Discussion

21.	What is the meaning of anhydrous, turbidity and crystalline?
Answer» What is the meaning of anhydrous, turbidity and crystalline?

Discussion

22.	According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1 × 10−31 kg is
Answer» According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1 $\times$ $10^{- 31}$ kg is

Discussion

23.	formula for ethyl butanoate
Answer» formula for ethyl butanoate

Discussion

24.	How to do the electronic configuration of an element?
Answer» How to do the electronic configuration of an element?

Discussion

25.	What are enantiomers?
Answer» What are enantiomers?

Discussion

26.	Why dry ether is used in Wurtz reaction?
Answer» Why dry ether is used in Wurtz reaction?

Discussion

27.	Which of the following represent the correct order of decreasing IE1 for Ca, Ba, S, Se and Ar?
Answer» Which of the following represent the correct order of decreasing $I E_{1}$ for Ca, Ba, S, Se and Ar?

27.

Which of the following represent the correct order of decreasing IE1 for Ca, Ba, S, Se and Ar?

Answer»

Which of the following represent the correct order of decreasing $I E_{1}$ for Ca, Ba, S, Se and Ar?

Discussion

28.	The degree of dissociation of acetic acid in a 0.1 M solution is 1.32×10−2, find out its pKa value. Take log10(1.76)=0.25
Answer» The degree of dissociation of acetic acid in a $0.1 M$ solution is $1.32 \times 10^{- 2}$ , find out its $p K_{a}$ value. Take $l o g_{10} (1.76) = 0.25$

Discussion

29.	The proper name of K2[PtCl6]
Answer» The proper name of $K_{2} [P t C l_{6}]$

Discussion

30.	The orbital diagram in which both the pauli's exclusion principle and Hund's rule violated is
Answer» The orbital diagram in which both the pauli's exclusion principle and Hund's rule violated is

Discussion

31.	Why is Gabriel pthalamide synthesis preferred for synthesis of primary amines?
Answer» Why is Gabriel pthalamide synthesis preferred for synthesis of primary amines?

Discussion

32.	Question 08 The number of radial nodes for 3p orbital is....... (a) 3 (b) 4 (c) 2 (d) 1
Answer» Question 08 The number of radial nodes for 3p orbital is....... (a) 3 (b) 4 (c) 2 (d) 1

32.

Question 08 The number of radial nodes for 3p orbital is....... (a) 3 (b) 4 (c) 2 (d) 1

Answer»

Question 08

The number of radial nodes for 3p orbital is.......

(a) 3 (b) 4 (c) 2 (d) 1

Discussion

33.	The species having pyramidal shape is
Answer» The species having pyramidal shape is

Discussion

34.	Among I) Pure Na2O2II) KO2III) dil solution of Na in NH3(l)IV) Li2O, the coloured and paramagnetic substance are
Answer» Among I) Pure Na₂O₂II) KO₂III) dil solution of Na in NH₃(l)IV) Li₂O, the coloured and paramagnetic substance are

34.

Among I) Pure Na2O2II) KO2III) dil solution of Na in NH3(l)IV) Li2O, the coloured and paramagnetic substance are

Answer»

Among I) Pure Na₂O₂II) KO₂III) dil solution of Na in NH₃(l)IV) Li₂O, the coloured and

paramagnetic substance are

Discussion

35.	The de Brogile wavelength of electron in first Bohr orbit is exactly equal to ?
Answer» The de Brogile wavelength of electron in first Bohr orbit is exactly equal to ?

Discussion

36.	The stability of +4 oxidation state will be maximum in:
Answer» The stability of +4 oxidation state will be maximum in:

Discussion

37.	The correct order of stability of the following carbanions is: (CH3)3C−,−CCl3,(CH3)2CH−,C6H5−CH−2
Answer» The correct order of stability of the following carbanions is: $(C H_{3})_{3} C^{-},^{-} C C l_{3}, (C H_{3})_{2} C H^{-}, C_{6} H_{5} - C H_{2}^{-}$

37.

The correct order of stability of the following carbanions is: (CH3)3C−,−CCl3,(CH3)2CH−,C6H5−CH−2

Answer»

The correct order of stability of the following carbanions is:

$(C H_{3})_{3} C^{-},^{-} C C l_{3}, (C H_{3})_{2} C H^{-}, C_{6} H_{5} - C H_{2}^{-}$

Discussion

38.	The critical temperatures of CO, CH4, HCl and SO2 are 134K, 190K, 324K and 430K respectively. The order of extension of adsorption of these gases on charcoal is
Answer» The critical temperatures of CO, $C H_{4}$ , HCl and $S O_{2}$ are 134K, 190K, 324K and 430K respectively. The order of extension of adsorption of these gases on charcoal is

Discussion

39.	Which of the followings are not a general formula of silicate ion present cyclic silicates ?
Answer» Which of the followings are not a general formula of silicate ion present cyclic silicates ?

Discussion

40.	Least hinderance rotation about carbon carbon bond is observed in
Answer» Least hinderance rotation about carbon carbon bond is observed in

Discussion

41.	Which of the following holds true with regard to the order of stability?
Answer» Which of the following holds true with regard to the order of stability?

Discussion

42.	Which of the following compounds are administered as antacids? (a) Sodium carbonate (b) Sodium hydrogencarbonate (c) Aluminium carbonate (d) Magnesium hydroxide
Answer» Which of the following compounds are administered as antacids? (a) Sodium carbonate (b) Sodium hydrogencarbonate (c) Aluminium carbonate (d) Magnesium hydroxide

Discussion

43.	Coconut oil upon alkaline hydrolysis gives[MP PET 1991; AFMC 2000; KCET 2001; BCECE 2005]
Answer» Coconut oil upon alkaline hydrolysis gives[MP PET 1991; AFMC 2000; KCET 2001; BCECE 2005]

Discussion

44.	Which of the following is γ position in CH3IV−CIIIH2−CIIH2−Br\|CH2I
Answer» Which of the following is $γ$ position in $C H_{3} I V - C I I I H_{2} - C I I H_{2} - B r \| C H_{2} I$

Discussion

45.	The total number of p-bond electrons in the following structure is :
Answer» The total number of p-bond electrons in the following structure is :

45.

The total number of p-bond electrons in the following structure is :

Answer»

The total number of p-bond electrons in the following structure is :

Discussion

46.	Which of the following forms basic oxide with oxygen?
Answer» Which of the following forms basic oxide with oxygen?

Discussion

47.	Which of the following reactants is suitable for preparation of methane and ethane by using one step only?
Answer» Which of the following reactants is suitable for preparation of methane and ethane by using one step only?

Discussion

48.	What is the ratio of monochlorinated product(s) formed from the above reaction, if all the hydrogens were abstracted at equal rates?
Answer» What is the ratio of monochlorinated product(s) formed from the above reaction, if all the hydrogens were abstracted at equal rates?

Discussion

49.	With an increase in the extent of penetration of valence electrons, ionization energy
Answer» With an increase in the extent of penetration of valence electrons, ionization energy

Discussion

50.	QUESTION 2.15 An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?
Answer» QUESTION 2.15 An aqueous solution of $2 %$ non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?

50.

QUESTION 2.15 An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?

Answer»

QUESTION 2.15

An aqueous solution of $2 %$ non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Name the substance which can be used as a catalyst and an oxidising agent.

Which of these is used as reference for relative atomic mass?

The end product 'C' of the above reaction is:

The diameter of atoms forming a closed packed structure in the given figure is 4×10−8 cm. The maximum radius of the atom occupying the space in between is ×10−8 cm.

What are isotonic solutions?

A carbon compound containing carbon and oxygen has approximate molar mass equal to 290. On analysis it is found to contain 50% by mass of each element. Therefore molecular formula of the compound is

A hypothetical sub-atomic particle has a mass 49.1 times of an electron and a charge equal to that of a proton. Calculate the charge to mass ratio.

The final product formed in the following reaction is:

The heat for a reaction, C10H8 (s)+12O2 (g)→10CO2 (g)+4H2O (l) at constant volume is given as −1228.2 kcal at 25oC. The heat of the reaction at constant pressure and same temperature is:

Find the pH of 10-6 M and 10-8 M of HCl

'n' moles of an ideal gas undergoes a process A→B as shown in the figure. The maximum temperature of the gas during the process will be

Why do amino acids have high melting point ?

Why E2O3 is more acidic than E2O5(group 15)

3g of H2 react with 29g of O2 to yield H2O, which is the limiting reactant? Calculate the maximum amount of H2O that can be formed. Calculate the amount of the reactant which remains unreacted.

Hydration of the following alkene gives which of the follwing alcohols

The freezing point of a solution containing 10 g of K3[Fe(CN)6] (mol wt. 329) in 200 gram of water (Kf=1.86 K Kg mol−1) is:

Which of the following is formed in reaction mechanism of halogenation of alkanes in presence of UV light?

The number of hyperconjugative structures involving C-H bond resonance are :

Which of the following 0.10m aqueous solutions will cause highest depression in freezing point?

[Co(NH3)4Cl2]NO2 and [Co(NH3)4Cl(NO2)]Cl exhibit which type of isomerism?

What is the meaning of anhydrous, turbidity and crystalline?

According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1 × 10−31 kg is

formula for ethyl butanoate

How to do the electronic configuration of an element?

What are enantiomers?

Why dry ether is used in Wurtz reaction?

Which of the following represent the correct order of decreasing IE1 for Ca, Ba, S, Se and Ar?

The degree of dissociation of acetic acid in a 0.1 M solution is 1.32×10−2, find out its pKa value. Take log10(1.76)=0.25

The proper name of K2[PtCl6]

The orbital diagram in which both the pauli's exclusion principle and Hund's rule violated is

Why is Gabriel pthalamide synthesis preferred for synthesis of primary amines?

Question 08 The number of radial nodes for 3p orbital is....... (a) 3 (b) 4 (c) 2 (d) 1

The species having pyramidal shape is

Among I) Pure Na2O2II) KO2III) dil solution of Na in NH3(l)IV) Li2O, the coloured and paramagnetic substance are

The de Brogile wavelength of electron in first Bohr orbit is exactly equal to ?

The stability of +4 oxidation state will be maximum in:

The correct order of stability of the following carbanions is: (CH3)3C−,−CCl3,(CH3)2CH−,C6H5−CH−2

The critical temperatures of CO, CH4, HCl and SO2 are 134K, 190K, 324K and 430K respectively. The order of extension of adsorption of these gases on charcoal is

Which of the followings are not a general formula of silicate ion present cyclic silicates ?

Least hinderance rotation about carbon carbon bond is observed in

Which of the following holds true with regard to the order of stability?

Which of the following compounds are administered as antacids? (a) Sodium carbonate (b) Sodium hydrogencarbonate (c) Aluminium carbonate (d) Magnesium hydroxide

Coconut oil upon alkaline hydrolysis gives[MP PET 1991; AFMC 2000; KCET 2001; BCECE 2005]

Which of the following is γ position in CH3IV−CIIIH2−CIIH2−Br|CH2I

The total number of p-bond electrons in the following structure is :

Which of the following forms basic oxide with oxygen?

Which of the following reactants is suitable for preparation of methane and ethane by using one step only?

What is the ratio of monochlorinated product(s) formed from the above reaction, if all the hydrogens were abstracted at equal rates?

With an increase in the extent of penetration of valence electrons, ionization energy

QUESTION 2.15 An aqueous solution of 2% non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. What is the molar mass of the solute?