46295 + Interview Questions in Chemistry

1.	A when added to silica gives B. A and B are:
Answer» A when added to silica gives B. A and B are:

Discussion

2.	Diethyl ether absorbs oxygen to form
Answer» Diethyl ether absorbs oxygen to form

Discussion

3.	The oxidation state of S atom in [HSO4]− is
Answer» The oxidation state of S atom in $[H S O_{4}]^{-}$ is

Discussion

4.	25. How many optically active, meso isomers are possible for the following compound? CH₃CHBrCHClCHClCH₃ Is there any formula for the same
Answer» 25. How many optically active, meso isomers are possible for the following compound? CH₃CHBrCHClCHClCH₃ Is there any formula for the same

Discussion

5.	the specific heat of a gas in a poly atomic process is given by wha
Answer» the specific heat of a gas in a poly atomic process is given by wha

Discussion

6.	the molarity of 49g of H2SO4 in 500ml of solution i
Answer» the molarity of 49g of H2SO4 in 500ml of solution i

Discussion

7.	which of the following doesnot act as bronsted acid? (a)NH_{4^+} (b)HCO_{3^-} (c)HSO_{3^-} (d)CH_{3^{COO^{}
Answer» which of the following doesnot act as bronsted acid? (a)NH_{4^+} (b)HCO_{3^-} (c)HSO_{3^-} (d)CH_{3^{COO^{}

Discussion

8.	The total number of valence electron in 4.2g N^{-3} ion are(take avagadro no. as Na
Answer» The total number of valence electron in 4.2g N^{-3} ion are(take avagadro no. as Na

Discussion

9.	Which of the following will not under go disproportionation reaction in the presence of dilute (or) Conc NaOH
Answer» Which of the following will not under go disproportionation reaction in the presence of dilute (or) Conc NaOH

Discussion

10.	For the elementary reactionmA + nB → productsA is present in excess and when the concentration of B is changed from 0.01 to 0.02, the rate of reaction becomes 4 times, then the rate law determined experimentally can be
Answer» For the elementary reaction mA + nB → products A is present in excess and when the concentration of B is changed from 0.01 to 0.02, the rate of reaction becomes 4 times, then the rate law determined experimentally can be

Discussion

11.	Which is not correct?
Answer» Which is not correct?

Discussion

12.	Number of unshared pair of electrons that an ammonia molecule has is are:
Answer» Number of unshared pair of electrons that an ammonia molecule has is are:

Discussion

13.	Which of the following is/are correct order of solubility in water?
Answer» Which of the following is/are correct order of solubility in water?

Discussion

14.	41 The ratio of difference in wavelength of 1st and 2nd line of lyman series in H-like atom to difference in wavelength for 2nd and 3rd lines of same series is
Answer» 41 The ratio of difference in wavelength of 1st and 2nd line of lyman series in H-like atom to difference in wavelength for 2nd and 3rd lines of same series is

Discussion

15.	The number of compound(s) which cannot show tautomerism is/are:
Answer» The number of compound(s) which cannot show tautomerism is/are:

Discussion

16.	The basic structure of silicate is:-
Answer» The basic structure of silicate is:-

Discussion

17.	A point travelled half of the dis†an ce with velocity v. The remaining half part of the dis†an ce was covered with velocity v_{1 }for half of the time and with velocity v_2 for the other half of the time. Find the mean velocity of the point averaged over the whole time of the motion
Answer» A point travelled half of the dis†an ce with velocity v. The remaining half part of the dis†an ce was covered with velocity v_{1 }for half of the time and with velocity v_2 for the other half of the time. Find the mean velocity of the point averaged over the whole time of the motion

Discussion

18.	Howare XeO3and XeOF4prepared?
Answer» How are XeO₃ and XeOF₄ prepared?

Discussion

19.	explain the octahedral geometry of BrF5 molecule?
Answer» explain the octahedral geometry of BrF5 molecule?

Discussion

20.	The major product for the above reaction is:
Answer» The major product for the above reaction is:

Discussion

21.	During electrochemical process, when 2 rods, Zn and Cu are taken in seperate containers why does Zn releases 2 electrons and Cu accepts it and NOT vice versa?
Answer» During electrochemical process, when 2 rods, Zn and Cu are taken in seperate containers why does Zn releases 2 electrons and Cu accepts it and NOT vice versa?

Discussion

22.	the addition of HOCL to allyl alcohol gives a.2-chloropropane-1,3-diol b.3 chloropropane-1,2-diol c.2,3dichloropropanol d.1,2,3trichloropropane
Answer» the addition of HOCL to allyl alcohol gives a.2-chloropropane-1,3-diol b.3 chloropropane-1,2-diol c.2,3dichloropropanol d.1,2,3trichloropropane

Discussion

23.	Bakelite is obtained from phenol by reacting it with:
Answer» Bakelite is obtained from phenol by reacting it with:

Discussion

24.	Which of the following is not an example of redox reaction?
Answer» Which of the following is not an example of redox reaction?

Discussion

25.	The molarity of a sulphuric acid sample havingdensity 2.12 g/mL and mass percentage 49% (w/w)is equal to(1) 18.8 M() 16.8 M(3) 10.6 M(4) 21.1 M
Answer» The molarity of a sulphuric acid sample havingdensity 2.12 g/mL and mass percentage 49% (w/w)is equal to(1) 18.8 M() 16.8 M(3) 10.6 M(4) 21.1 M

Discussion

26.	Ammonia is more basic than phosphine because
Answer» Ammonia is more basic than phosphine because

Discussion

27.	42. the amount of H2O2 present in 1L of 30 V H2O2 solution is approximately
Answer» 42. the amount of H2O2 present in 1L of 30 V H2O2 solution is approximately

Discussion

28.	For the reaction a + b gives c + d, doubling the concentration of of both the reactants increases the reaction by 8 times and doubling the concentration of only b simply doubles the reaction rate. Find the rate law for the above equation
Answer» For the reaction a + b gives c + d, doubling the concentration of of both the reactants increases the reaction by 8 times and doubling the concentration of only b simply doubles the reaction rate. Find the rate law for the above equation

Discussion

29.	ideal monoatomic gas is takebn through a process dQ=2dU.Find the molar heat capacity(in terms of R)for the process
Answer» ideal monoatomic gas is takebn through a process dQ=2dU.Find the molar heat capacity(in terms of R)for the process

Discussion

30.	Why in anisole during halogenation halogen group do not occupy all ortho and para position like phenol
Answer» Why in anisole during halogenation halogen group do not occupy all ortho and para position like phenol

Discussion

31.	The pH of 0.1 M solution of the following salts increases in what order? NaCl , NHCl , NaCN , HCl
Answer» The pH of 0.1 M solution of the following salts increases in what order? NaCl , NHCl , NaCN , HCl

Discussion

32.	A:Addition of HBr in buta-1,3-diene gives 3-bromo but-1-ene as major product at low temperature.R::Addition of HBr in buta-1,3-diene gives 1-bromo but-2-ene as major product at high temperature.
Answer» A:Addition of HBr in buta-1,3-diene gives 3-bromo but-1-ene as major product at low temperature. R::Addition of HBr in buta-1,3-diene gives 1-bromo but-2-ene as major product at high temperature.

Discussion

33.	ForM2+/Mand M3+/M2+systems, the values for some metals are as follows:Cr2+/Cr −0.9VCr3/Cr2+ −0.4 VMn2+/Mn −1.2VMn3+/Mn2+ +1.5 VFe2+/Fe −0.4VFe3+/Fe2+ +0.8 VUsethis data to comment upon:(i) Thestability of Fe3+in acid solution as compared to that of Cr3+or Mn3+and(ii) Theease with which iron can be oxidised as compared to a similar processfor either chromium or manganese metal.
Answer» For M²⁺/M and M³⁺/M²⁺systems, the values for some metals are as follows: Cr²⁺/Cr −0.9V Cr³/Cr²⁺ −0.4 V Mn²⁺/Mn −1.2V Mn³⁺ /Mn²⁺ +1.5 V Fe²⁺ /Fe −0.4V Fe³⁺/Fe²⁺ +0.8 V Use this data to comment upon: (i) The stability of Fe³⁺ in acid solution as compared to that of Cr³⁺ or Mn³⁺and (ii) The ease with which iron can be oxidised as compared to a similar process for either chromium or manganese metal.

33.

ForM2+/Mand M3+/M2+systems, the values for some metals are as follows:Cr2+/Cr −0.9VCr3/Cr2+ −0.4 VMn2+/Mn −1.2VMn3+/Mn2+ +1.5 VFe2+/Fe −0.4VFe3+/Fe2+ +0.8 VUsethis data to comment upon:(i) Thestability of Fe3+in acid solution as compared to that of Cr3+or Mn3+and(ii) Theease with which iron can be oxidised as compared to a similar processfor either chromium or manganese metal.

Answer»

For
M²⁺/M
and M³⁺/M²⁺systems, the

values for some metals are as follows:

Cr²⁺/Cr
−0.9V

Cr³/Cr²⁺
−0.4 V

Mn²⁺/Mn
−1.2V

Mn³⁺
/Mn²⁺
+1.5 V

Fe²⁺
/Fe −0.4V

Fe³⁺/Fe²⁺
+0.8 V

Use
this data to comment upon:

(i) The
stability of Fe³⁺
in acid solution as compared to that of Cr³⁺
or Mn³⁺and

(ii) The
ease with which iron can be oxidised as compared to a similar process
for either chromium or manganese metal.

Discussion

34.	21.which of the following compound undergoes both aldol and cannizaro reaction? 1)(CH3)2CHCHO 2)HCHO 3)C6H5CHO 4)CH3CHO
Answer» 21.which of the following compound undergoes both aldol and cannizaro reaction? 1)(CH3)2CHCHO 2)HCHO 3)C6H5CHO 4)CH3CHO

Discussion

35.	If two volatile liquids A and B form a maximum boiling azeotrope at XA=0.3. For, P∘A=200 torr and P∘B=400 torr ,the vapour pressure of the azeotropic mixture can exhibit a value of :
Answer» If two volatile liquids A and B form a maximum boiling azeotrope at $X_{A} = 0.3$ . For, $P_{A}^{\circ} = 200 t o r r and P_{B}^{\circ} = 400 t o r r$ ,the vapour pressure of the azeotropic mixture can exhibit a value of :

Discussion

36.	Sodium has a bcc structure with nearest neighbour distance of 365.9 pm. Calculate its density (atomic mass of sodium = 23)
Answer» Sodium has a bcc structure with nearest neighbour distance of 365.9 pm. Calculate its density (atomic mass of sodium = 23)

Discussion

37.	Which side will be considered as negative side or positive side,In case of displacement?
Answer» Which side will be considered as negative side or positive side,In case of displacement?

Discussion

38.	Which of the following hydrides has the least boiling point?
Answer» Which of the following hydrides has the least boiling point?

Discussion

39.	Do cathode rays actually originate from cathode?
Answer» Do cathode rays actually originate from cathode?

Discussion

40.	Describethe manufacture of H2SO4by contact process?
Answer» Describe the manufacture of H₂SO₄ by contact process?

Discussion

41.	vapour density of a gas having formula [co]x is 70.find x
Answer» vapour density of a gas having formula [co]x is 70.find x

Discussion

42.	Can't we say methyl ethanoate as propanoate ?
Answer» Can't we say methyl ethanoate as propanoate ?

Discussion

43.	The species having highest number of resonating structures is(1) CO2 (3) PO4^3-(2) NO3-4) HCOO-
Answer» The species having highest number of resonating structures is (1) CO2 (3) PO4^3- (2) NO3- 4) HCOO-

Discussion

44.	The possible correct set of quantum numbers for the unpaired electron of Cl atom is
Answer» The possible correct set of quantum numbers for the unpaired electron of $C l$ atom is

Discussion

45.	If 30 g of a solute of molecular weight 154 g mol−1is dissolved in 250 g of benzene, what will be the boiling point of the resulting solution under atmospheric pressure? The molal boiling-point elevation constant for benzene is 2.61 K kg mol−1 and the boiling point of pure benzene is 80.1oC.
Answer» If $30 g$ of a solute of molecular weight $154 g m o l^{- 1}$ is dissolved in $250 g$ of benzene, what will be the boiling point of the resulting solution under atmospheric pressure? The molal boiling-point elevation constant for benzene is $2.61 K k g m o l^{- 1}$ and the boiling point of pure benzene is ${80.1}^{o} C .$

Discussion

46.	The specific heats of iodine vapour and solid are 0.031 cal K−1g−1 and 0.055 cal K−1g−1 respectively. If heat of sublimation of iodine is 24 cal/g at 200∘C, calculate its value at 250∘C.
Answer» The specific heats of iodine vapour and solid are $0.031 c a l K^{- 1} g^{- 1}$ and $0.055 c a l K^{- 1} g^{- 1}$ respectively. If heat of sublimation of iodine is 24 cal/g at $200^{\circ} C$ , calculate its value at $250^{\circ} C$ .

Discussion

47.	23. Why H+ ion combine with water to give hydronium ion?
Answer» 23. Why H+ ion combine with water to give hydronium ion?

Discussion

48.	In cannizzaro reaction how to decide which compound will form alcohol and which will form carboxylic acid salt?
Answer» In cannizzaro reaction how to decide which compound will form alcohol and which will form carboxylic acid salt?

Discussion

49.	Find the range of the following functions given by f(x) = 1/2−sin3x
Answer» Find the range of the following functions given by f(x) = 1/2−sin3x

Discussion

50.	A vessel contains 0.16g of methane and 0.28g of nitrogen. The ratio of partial pressures of methane to nitrogen in the mixture is about:
Answer» A vessel contains 0.16g of methane and 0.28g of nitrogen. The ratio of partial pressures of methane to nitrogen in the mixture is about:

50.

A vessel contains 0.16g of methane and 0.28g of nitrogen. The ratio of partial pressures of methane to nitrogen in the mixture is about:

Answer»

A vessel contains 0.16g of methane and 0.28g of nitrogen. The ratio of partial pressures of methane to nitrogen in the mixture is about:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A when added to silica gives B. A and B are:

Diethyl ether absorbs oxygen to form

The oxidation state of S atom in [HSO4]− is

25. How many optically active, meso isomers are possible for the following compound? CH₃CHBrCHClCHClCH₃ Is there any formula for the same

the specific heat of a gas in a poly atomic process is given by wha

the molarity of 49g of H2SO4 in 500ml of solution i

which of the following doesnot act as bronsted acid? (a)NH_{4^+} (b)HCO_{3^-} (c)HSO_{3^-} (d)CH_{3^{COO^{}

The total number of valence electron in 4.2g N^{-3} ion are(take avagadro no. as Na

Which of the following will not under go disproportionation reaction in the presence of dilute (or) Conc NaOH

For the elementary reactionmA + nB → productsA is present in excess and when the concentration of B is changed from 0.01 to 0.02, the rate of reaction becomes 4 times, then the rate law determined experimentally can be

Which is not correct?

Number of unshared pair of electrons that an ammonia molecule has is are:

Which of the following is/are correct order of solubility in water?

41 The ratio of difference in wavelength of 1st and 2nd line of lyman series in H-like atom to difference in wavelength for 2nd and 3rd lines of same series is

The number of compound(s) which cannot show tautomerism is/are:

The basic structure of silicate is:-

A point travelled half of the dis†an ce with velocity v. The remaining half part of the dis†an ce was covered with velocity v_{1 }for half of the time and with velocity v_2 for the other half of the time. Find the mean velocity of the point averaged over the whole time of the motion

Howare XeO3and XeOF4prepared?

explain the octahedral geometry of BrF5 molecule?

The major product for the above reaction is:

During electrochemical process, when 2 rods, Zn and Cu are taken in seperate containers why does Zn releases 2 electrons and Cu accepts it and NOT vice versa?

the addition of HOCL to allyl alcohol gives a.2-chloropropane-1,3-diol b.3 chloropropane-1,2-diol c.2,3dichloropropanol d.1,2,3trichloropropane

Bakelite is obtained from phenol by reacting it with:

Which of the following is not an example of redox reaction?

The molarity of a sulphuric acid sample havingdensity 2.12 g/mL and mass percentage 49% (w/w)is equal to(1) 18.8 M() 16.8 M(3) 10.6 M(4) 21.1 M

Ammonia is more basic than phosphine because

42. the amount of H2O2 present in 1L of 30 V H2O2 solution is approximately

For the reaction a + b gives c + d, doubling the concentration of of both the reactants increases the reaction by 8 times and doubling the concentration of only b simply doubles the reaction rate. Find the rate law for the above equation

ideal monoatomic gas is takebn through a process dQ=2dU.Find the molar heat capacity(in terms of R)for the process

Why in anisole during halogenation halogen group do not occupy all ortho and para position like phenol

The pH of 0.1 M solution of the following salts increases in what order? NaCl , NHCl , NaCN , HCl

A:Addition of HBr in buta-1,3-diene gives 3-bromo but-1-ene as major product at low temperature.R::Addition of HBr in buta-1,3-diene gives 1-bromo but-2-ene as major product at high temperature.

21.which of the following compound undergoes both aldol and cannizaro reaction? 1)(CH3)2CHCHO 2)HCHO 3)C6H5CHO 4)CH3CHO

If two volatile liquids A and B form a maximum boiling azeotrope at XA=0.3. For, P∘A=200 torr and P∘B=400 torr ,the vapour pressure of the azeotropic mixture can exhibit a value of :

Sodium has a bcc structure with nearest neighbour distance of 365.9 pm. Calculate its density (atomic mass of sodium = 23)

Which side will be considered as negative side or positive side,In case of displacement?

Which of the following hydrides has the least boiling point?

Do cathode rays actually originate from cathode?

Describethe manufacture of H2SO4by contact process?

vapour density of a gas having formula [co]x is 70.find x

Can't we say methyl ethanoate as propanoate ?

The species having highest number of resonating structures is(1) CO2 (3) PO4^3-(2) NO3-4) HCOO-

The possible correct set of quantum numbers for the unpaired electron of Cl atom is

If 30 g of a solute of molecular weight 154 g mol−1is dissolved in 250 g of benzene, what will be the boiling point of the resulting solution under atmospheric pressure? The molal boiling-point elevation constant for benzene is 2.61 K kg mol−1 and the boiling point of pure benzene is 80.1oC.

The specific heats of iodine vapour and solid are 0.031 cal K−1g−1 and 0.055 cal K−1g−1 respectively. If heat of sublimation of iodine is 24 cal/g at 200∘C, calculate its value at 250∘C.

23. Why H+ ion combine with water to give hydronium ion?

In cannizzaro reaction how to decide which compound will form alcohol and which will form carboxylic acid salt?

Find the range of the following functions given by f(x) = 1/2−sin3x

A vessel contains 0.16g of methane and 0.28g of nitrogen. The ratio of partial pressures of methane to nitrogen in the mixture is about: