46295 + Interview Questions in Chemistry

1.	Of the following transition in H-atom, the one which gives an absorption line of maximum wavelength is:
Answer» Of the following transition in $H$ -atom, the one which gives an absorption line of maximum wavelength is:

Discussion

2.	If n (A × B) = 200 and n(A) = 50, then the number of elements in P(B) is _______ .
Answer» If n (A × B) = 200 and n(A) = 50, then the number of elements in P(B) is _______ .

Discussion

3.	A Light of wavelength λ shines on a metal surface with intensity X, and the metal emits Y electrons per second of average energy Z. What will happen to Y and Z If X is doubled?
Answer» A Light of wavelength $λ$ shines on a metal surface with intensity X, and the metal emits Y electrons per second of average energy Z. What will happen to Y and Z If X is doubled?

Discussion

4.	The absolute value of standard reduction potential for CuS\|Cu electrode in volts is Given: Ksp of CuS=8.0×10−36; EoCu\|Cu2+=−0.34 V. (take log2=0.3)
Answer» The absolute value of standard reduction potential for $C u S \| C u$ electrode in volts is Given: $K_{s p}$ of $C u S = 8.0 \times 10^{- 36}; E_{C u \| C u^{2 +}}^{o} = - 0.34 V$ . (take $l o g 2 = 0.3$ )

Discussion

5.	25 ml solution has [C2O4]2− ions. It is found to require 10 ml of N10 acidic K2Cr2O7 for a complete reaction. Find out the molarity of [C2O4]2− in the solution.
Answer» 25 ml solution has $[C_{2} O_{4}]^{2 -}$ ions. It is found to require 10 ml of $\frac{N}{10}$ acidic $K_{2} C r_{2} O_{7}$ for a complete reaction. Find out the molarity of $[C_{2} O_{4}]^{2 -}$ in the solution.

Discussion

6.	Identify incorrectly matched set
Answer» Identify incorrectly matched set

Discussion

7.	27.What is heat of Hydrogenation
Answer» 27.What is heat of Hydrogenation

Discussion

8.	What should be the explanation for &quotodd electron molecules&quotin case of limitations of octet rule?
Answer» What should be the explanation for "odd electron molecules"in case of limitations of octet rule?

Discussion

9.	Q 59/75 Amixture of N2 and H2 is caused to react in a closedcontainer to form NH3. The reaction ceases before either reactanthas been totally consumed. At this stage, 2 moles each of N2, H2 andNH3 are present. Then the weight of N2 and H2 present originallywere respectively
Answer» Q 59/75 Amixture of N2 and H2 is caused to react in a closedcontainer to form NH3. The reaction ceases before either reactanthas been totally consumed. At this stage, 2 moles each of N2, H2 andNH3 are present. Then the weight of N2 and H2 present originallywere respectively

Discussion

10.	A cylinder of weight 200N is supported on a smooth horizontal plane by a light cord AC and pulled with force of 400N as shown in the figure. The normal reaction at B is equal to
Answer» A cylinder of weight 200N is supported on a smooth horizontal plane by a light cord AC and pulled with force of 400N as shown in the figure. The normal reaction at B is equal to

Discussion

11.	84Po210 (half-life= 138.4 days) undergoes α- decay to form 82Pb206. If 2.1 g of 84Po210 is placed in a sealed tube, what volume (in mL) of helium will accumulate in 69.2 days at STP?(take √2=1.4).
Answer» $_{84} P o^{210}$ (half-life= 138.4 days) undergoes $α$ - decay to form $_{82} P b^{206}$ . If 2.1 g of $_{84} P o^{210}$ is placed in a sealed tube, what volume (in mL) of helium will accumulate in 69.2 days at STP?(take $\sqrt{2}$ =1.4).

Discussion

12.	Convert 0.1m aqueous solution of al2(so4)3 in moles.
Answer» Convert 0.1m aqueous solution of al2(so4)3 in moles.

Discussion

13.	A metal X on heating in nitrogen gas gives Y. Y on treatment with H2O gives a colourless gas Z. Z when passed through chloroplatinic acid produces a yellow precipitate. ‘Z′ is
Answer» A metal $X$ on heating in nitrogen gas gives $Y$ . $Y$ on treatment with $H_{2} O$ gives a colourless gas $Z$ . $Z$ when passed through chloroplatinic acid produces a yellow precipitate. $‘ Z^{'}$ is

Discussion

14.	71. How many sigma bond π bond lone pair are present in P4O10 and P4O6
Answer» 71. How many sigma bond π bond lone pair are present in P4O10 and P4O6

Discussion

15.	Number of oxides formed by nitrogen is:
Answer» Number of oxides formed by nitrogen is:

Discussion

16.	number of lattice points in simple cubic unit cell, FCC and BCC
Answer» number of lattice points in simple cubic unit cell, FCC and BCC

Discussion

17.	Why ∆y/ ∆x is written??
Answer» Why ∆y/ ∆x is written??

Discussion

18.	32.CuSO4 aq electrolysed using platinum electrode. A current is passed until 1.6g of O2 liberated at anode. The amount of Cu deposited at Cathode during same time period is
Answer» 32.CuSO4 aq electrolysed using platinum electrode. A current is passed until 1.6g of O2 liberated at anode. The amount of Cu deposited at Cathode during same time period is

Discussion

19.	Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?
Answer» Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?

19.

Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?

Answer»

Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?

Discussion

20.	Which one of the following reactions is called Rosendmund reaction?
Answer» Which one of the following reactions is called Rosendmund reaction?

Discussion

21.	A 5 solution of sulphuric acid is diluted from 1 litre to a volume of 100 litres,calculate the normality of the solution.
Answer» A 5 solution of sulphuric acid is diluted from 1 litre to a volume of 100 litres,calculate the normality of the solution.

Discussion

22.	Which of the following is not obtained by direct reaction of constituent elements?
Answer» Which of the following is not obtained by direct reaction of constituent elements?

Discussion

23.	An aldehyde which undergoes Cannizaro's reaction and reducesSchiff's reagent but does not reduce Fehling's Solution is:
Answer» An aldehyde which undergoes Cannizaro's reaction and reduces Schiff's reagent but does not reduce Fehling's Solution is:

23.

An aldehyde which undergoes Cannizaro's reaction and reducesSchiff's reagent but does not reduce Fehling's Solution is:

Answer»

An aldehyde which undergoes Cannizaro's reaction and reduces
Schiff's reagent but does not reduce Fehling's Solution is:

Discussion

24.

Match the column I with column II and mark the appropriate choice.Column I Column II(A)IF5(i) Square pyramidal(B)IF7(ii) T-shaped(C)BrF3(iii) Pentagonal bipyramidal

Answer»

Match the column I with column II and mark the appropriate choice.

Column I Column II

$(A) I F_{5}$	(i) Square pyramidal
$(B) I F_{7}$	(ii) T-shaped
$(C) B r F_{3}$	(iii) Pentagonal bipyramidal

Discussion

25.	Cu^{2+}(aq) +2Ag(s)→ Cu(s) + 2Ag^+ . E_{Ag^+/Ag}^†extdegree=0.8 V. E_{Cu^{2+}/Cu}^†extdegree=0.3V. Change of free energy of this reaction
Answer» Cu^{2+}(aq) +2Ag(s)→ Cu(s) + 2Ag^+ . E_{Ag^+/Ag}^†extdegree=0.8 V. E_{Cu^{2+}/Cu}^†extdegree=0.3V. Change of free energy of this reaction

Discussion

26.	4 g of argon (Atomic mass = 40) in a bulb at a temperature of T K has a pressure P atm. When the bulb was placed in a hot bath at a temperature 50∘C more that the first one, 0.8 g of the gas had to be removed to get the original pressure. T is equal to:
Answer» $4 g$ of argon (Atomic mass = 40) in a bulb at a temperature of $T K$ has a pressure $P$ atm. When the bulb was placed in a hot bath at a temperature $50^{\circ} C$ more that the first one, $0.8 g$ of the gas had to be removed to get the original pressure. $T$ is equal to:

Discussion

27.	how chemical formula of carbon monoxide is CO? shouldn't it be C3O2?
Answer» how chemical formula of carbon monoxide is CO? shouldn't it be C3O2?

Discussion

28.	Which of the following has longest C-O bond length {Mn(co)6}+ Ni(co)4 {Co(co)4}- {Fe(co)4}2-
Answer» Which of the following has longest C-O bond length {Mn(co)6}+ Ni(co)4 {Co(co)4}- {Fe(co)4}2-

Discussion

29.	how to calculate no. of electrons in given molecules??
Answer» how to calculate no. of electrons in given molecules??

Discussion

30.	61. 0.23g of a metal on treatment with an acid gives 112ml of hydrogen gas at STP. Equivalent mass of metal is
Answer» 61. 0.23g of a metal on treatment with an acid gives 112ml of hydrogen gas at STP. Equivalent mass of metal is

Discussion

31.	Calculate the average oxidation number of underlined element in the following compound: Mn3−−−O4
Answer» Calculate the average oxidation number of underlined element in the following compound: $M n_{3} - - - O_{4}$

Discussion

32.	What volume of oxygen at STP is required to bring about complete combustion of 200 ml of acetylene and what would be the volume of co2 form?
Answer» What volume of oxygen at STP is required to bring about complete combustion of 200 ml of acetylene and what would be the volume of co2 form?

Discussion

33.	1 mole of H2O2had been prepared by the electrolysis of 50% H2SO4 ,followed by hydrolysis.Calculate the number of moles of electrons involved in this process.
Answer» 1 mole of $H_{2}$ $O_{2}$ had been prepared by the electrolysis of 50% $H_{2}$ $S O_{4}$ ,followed by hydrolysis.Calculate the number of moles of electrons involved in this process.

Discussion

34.	Highly reactive compound towards SN2 reaction is
Answer» Highly reactive compound towards $S N^{2}$ reaction is

Discussion

35.	Why in nitration of phenols major product is ortho while in halogentaion it is para product ?
Answer» Why in nitration of phenols major product is ortho while in halogentaion it is para product ?

Discussion

36.	what is alchemy ?is it actually possible to convert base metals in noble metals? what are the methods?are alchemist still there
Answer» what is alchemy ?is it actually possible to convert base metals in noble metals? what are the methods?are alchemist still there

Discussion

37.	Does half life of a first order reaction depend on initial concentration of reactants?
Answer» Does half life of a first order reaction depend on initial concentration of reactants?

Discussion

38.	Write the distribution of electrons in the carbon
Answer» Write the distribution of electrons in the carbon

38.

Write the distribution of electrons in the carbon

Answer»

Write the distribution of electrons in the carbon

Discussion

39.	State Henry’s law and mention some important applications?
Answer» State Henry’s law and mention some important applications?

Discussion

40.	Describe the preparation of alkene with their mechanism?
Answer» Describe the preparation of alkene with their mechanism?

Discussion

41.	The maximum covalency of sulphur is:
Answer» The maximum covalency of sulphur is:

Discussion

42.	Sir is inorganic important than organic chemistry In jee
Answer» Sir is inorganic important than organic chemistry In jee

Discussion

43.	2 blocks of mass 2kg and 4kg tied to a string passing over a frictionless pulley. What will be the magnitude of accelaration of masses when they are allowed to move freely
Answer» 2 blocks of mass 2kg and 4kg tied to a string passing over a frictionless pulley. What will be the magnitude of accelaration of masses when they are allowed to move freely

Discussion

44.	Convert ethane to isopropyl alcohol.
Answer» Convert ethane to isopropyl alcohol.

Discussion

45.	What does isotropy n anisotropy actually mean?
Answer» What does isotropy n anisotropy actually mean?

Discussion

46.	Arrange the following alkenes in order of their decreasing heat of combustion values:
Answer» Arrange the following alkenes in order of their decreasing heat of combustion values:

Discussion

47.	Which of the following expressions correctly represents the equivalent conductance at infnite dilution of Al2(SO4)3. Given that ∘ΛAl3+ and ∘ΛSO2−4 are the equivalent conductances at infinite dilution of the respective ions?
Answer» Which of the following expressions correctly represents the equivalent conductance at infnite dilution of ${Al}_{2} ({SO}_{4})_{3}$ . Given that ${\circ Λ}_{A l^{3 +}}$ and ${\circ Λ}_{S O_{4}^{2 -}}$ are the equivalent conductances at infinite dilution of the respective ions?

Discussion

48.	What is X?
Answer» What is X?

48.

What is X?

Answer»

What is X?

Discussion

49.	For the redox reaction, MnO−4,+C2O2−4+H+→Mn2++CO2+H2Othe correct coefficients of the reactants for the balanced reaction are respectively MnO−4,+C2O−4+H+:
Answer» For the redox reaction, $M n O_{4,}^{-} + C_{2} O_{4}^{2 -} + H^{+} \to M n^{2 +} + C O_{2} + H_{2} O$ the correct coefficients of the reactants for the balanced reaction are respectively $M n O_{4,}^{-} + C_{2} O_{4}^{-} + H^{+} :$

Discussion

50.	12. Arrange the following nucleophile in increasing rate towards reaction with the Methyl Bromide in EtOH 1)PhO- 2)PhS- 3)I- 4)Br-
Answer» 12. Arrange the following nucleophile in increasing rate towards reaction with the Methyl Bromide in EtOH 1)PhO- 2)PhS- 3)I- 4)Br-

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Of the following transition in H-atom, the one which gives an absorption line of maximum wavelength is:

If n (A × B) = 200 and n(A) = 50, then the number of elements in P(B) is _______ .

A Light of wavelength λ shines on a metal surface with intensity X, and the metal emits Y electrons per second of average energy Z. What will happen to Y and Z If X is doubled?

The absolute value of standard reduction potential for CuS|Cu electrode in volts is Given: Ksp of CuS=8.0×10−36; EoCu|Cu2+=−0.34 V. (take log2=0.3)

25 ml solution has [C2O4]2− ions. It is found to require 10 ml of N10 acidic K2Cr2O7 for a complete reaction. Find out the molarity of [C2O4]2− in the solution.

Identify incorrectly matched set

27.What is heat of Hydrogenation

What should be the explanation for &quotodd electron molecules&quotin case of limitations of octet rule?

Q 59/75 Amixture of N2 and H2 is caused to react in a closedcontainer to form NH3. The reaction ceases before either reactanthas been totally consumed. At this stage, 2 moles each of N2, H2 andNH3 are present. Then the weight of N2 and H2 present originallywere respectively

A cylinder of weight 200N is supported on a smooth horizontal plane by a light cord AC and pulled with force of 400N as shown in the figure. The normal reaction at B is equal to

84Po210 (half-life= 138.4 days) undergoes α- decay to form 82Pb206. If 2.1 g of 84Po210 is placed in a sealed tube, what volume (in mL) of helium will accumulate in 69.2 days at STP?(take √2=1.4).

Convert 0.1m aqueous solution of al2(so4)3 in moles.

A metal X on heating in nitrogen gas gives Y. Y on treatment with H2O gives a colourless gas Z. Z when passed through chloroplatinic acid produces a yellow precipitate. ‘Z′ is

71. How many sigma bond π bond lone pair are present in P4O10 and P4O6

Number of oxides formed by nitrogen is:

number of lattice points in simple cubic unit cell, FCC and BCC

Why ∆y/ ∆x is written??

32.CuSO4 aq electrolysed using platinum electrode. A current is passed until 1.6g of O2 liberated at anode. The amount of Cu deposited at Cathode during same time period is

Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens?

Which one of the following reactions is called Rosendmund reaction?

A 5 solution of sulphuric acid is diluted from 1 litre to a volume of 100 litres,calculate the normality of the solution.

Which of the following is not obtained by direct reaction of constituent elements?

An aldehyde which undergoes Cannizaro's reaction and reducesSchiff's reagent but does not reduce Fehling's Solution is:

Match the column I with column II and mark the appropriate choice.Column I Column II(A)IF5(i) Square pyramidal(B)IF7(ii) T-shaped(C)BrF3(iii) Pentagonal bipyramidal

Cu^{2+}(aq) +2Ag(s)→ Cu(s) + 2Ag^+ . E_{Ag^+/Ag}^†extdegree=0.8 V. E_{Cu^{2+}/Cu}^†extdegree=0.3V. Change of free energy of this reaction

4 g of argon (Atomic mass = 40) in a bulb at a temperature of T K has a pressure P atm. When the bulb was placed in a hot bath at a temperature 50∘C more that the first one, 0.8 g of the gas had to be removed to get the original pressure. T is equal to:

how chemical formula of carbon monoxide is CO? shouldn't it be C3O2?

Which of the following has longest C-O bond length {Mn(co)6}+ Ni(co)4 {Co(co)4}- {Fe(co)4}2-

how to calculate no. of electrons in given molecules??

61. 0.23g of a metal on treatment with an acid gives 112ml of hydrogen gas at STP. Equivalent mass of metal is

Calculate the average oxidation number of underlined element in the following compound: Mn3−−−O4

What volume of oxygen at STP is required to bring about complete combustion of 200 ml of acetylene and what would be the volume of co2 form?

​1 mole of H2O2had been prepared by the electrolysis of 50% H2SO4 ,followed by hydrolysis.Calculate the number of moles of electrons involved in this process.

Highly reactive compound towards SN2 reaction is

Why in nitration of phenols major product is ortho while in halogentaion it is para product ?

what is alchemy ?is it actually possible to convert base metals in noble metals? what are the methods?are alchemist still there

Does half life of a first order reaction depend on initial concentration of reactants?

Write the distribution of electrons in the carbon

State Henry’s law and mention some important applications?

Describe the preparation of alkene with their mechanism?

The maximum covalency of sulphur is:

Sir is inorganic important than organic chemistry In jee

2 blocks of mass 2kg and 4kg tied to a string passing over a frictionless pulley. What will be the magnitude of accelaration of masses when they are allowed to move freely

Convert ethane to isopropyl alcohol.

What does isotropy n anisotropy actually mean?

Arrange the following alkenes in order of their decreasing heat of combustion values:

Which of the following expressions correctly represents the equivalent conductance at infnite dilution of Al2(SO4)3. Given that ∘ΛAl3+ and ∘ΛSO2−4 are the equivalent conductances at infinite dilution of the respective ions?

What is X?

For the redox reaction, MnO−4,+C2O2−4+H+→Mn2++CO2+H2Othe correct coefficients of the reactants for the balanced reaction are respectively MnO−4,+C2O−4+H+:

12. Arrange the following nucleophile in increasing rate towards reaction with the Methyl Bromide in EtOH 1)PhO- 2)PhS- 3)I- 4)Br-

1 mole of H2O2had been prepared by the electrolysis of 50% H2SO4 ,followed by hydrolysis.Calculate the number of moles of electrons involved in this process.