46295 + Interview Questions in Chemistry

1.	In the following question a statement of assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question. Assertion (A) Generally, ionisation enthalpy increases from left to right in a period. Reason (R) wehn quantum level, the shielding effect fo inner core of electrons does not increase very much to compensate for the increased attraction of the electron to the nucleus. (a) Assertion is correct statement and reason is wrong statement. (b) assertion and reason both are correct statements and reason is correct explanation of assertion. (c) Assertion and reason both are wrong statements. (d) Assertion is wrong statement and reason is correct statement.
Answer» In the following question a statement of assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question. Assertion (A) Generally, ionisation enthalpy increases from left to right in a period. Reason (R) wehn quantum level, the shielding effect fo inner core of electrons does not increase very much to compensate for the increased attraction of the electron to the nucleus. (a) Assertion is correct statement and reason is wrong statement. (b) assertion and reason both are correct statements and reason is correct explanation of assertion. (c) Assertion and reason both are wrong statements. (d) Assertion is wrong statement and reason is correct statement.

Discussion

2.	How to find bond order c-c in benzene?
Answer» How to find bond order c-c in benzene?

Discussion

3.	In the mixture of NaHCO3 and Na2CO3 volume of a given HCl required is 'x' ml with phenolphthalein indicator and further 'y' ml required with methyl orange indicator. Hence volume of HCl for complete reaction of NaHCO3 is
Answer» In the mixture of $N a H C O_{3}$ and $N a_{2} C O_{3}$ volume of a given HCl required is 'x' ml with phenolphthalein indicator and further 'y' ml required with methyl orange indicator. Hence volume of $H C l$ for complete reaction of $N a H C O_{3}$ is

Discussion

4.	If pKb for the fluoride ion at 25∘C is 10.83, the ionization constant of hydrofluoric acid in water at this temperature is
Answer» If $p K_{b}$ for the fluoride ion at $25^{\circ} C$ is 10.83, the ionization constant of hydrofluoric acid in water at this temperature is

Discussion

5.	Solubility of a gas in a liquid is directly proportional to the pressure of gas. This is in accordance with
Answer» Solubility of a gas in a liquid is directly proportional to the pressure of gas. This is in accordance with

Discussion

6.	2 If the magnetic quantum number of an atom is represented by -3 then the principal quantum number will be?
Answer» 2 If the magnetic quantum number of an atom is represented by -3 then the principal quantum number will be?

Discussion

7.	A mixture of white bauxite powder and coke is heated in nitrogen gas very strongly . The products are
Answer» A mixture of white bauxite powder and coke is heated in nitrogen gas very strongly . The products are

Discussion

8.	Which effects àre shown by phenyl ring(i.e only benzene)?
Answer» Which effects àre shown by phenyl ring(i.e only benzene)?

Discussion

9.	35.Calculate the equivalent weight of following underlined CuSO4 + KI > Cu2I2 + K2SO4 + I2
Answer» 35.Calculate the equivalent weight of following underlined CuSO4 + KI > Cu2I2 + K2SO4 + I2

Discussion

10.	How to find the hybridizationof[Ni(CN)4]2- n ntand the d orbital used in it. What is the hybridization of NO2?
Answer» How to find the hybridizationof[Ni(CN)4]2- n ntand the d orbital used in it. What is the hybridization of NO2?

Discussion

11.	Catalytic hydrogenation reactivity series in alkenes
Answer» Catalytic hydrogenation reactivity series in alkenes

Discussion

12.	why non stotiometric defect occurs in crystals?
Answer» why non stotiometric defect occurs in crystals?

Discussion

13.	The end product of (4n+2) radioactive disintegration series is
Answer» The end product of $(4 n + 2)$ radioactive disintegration series is

Discussion

14.	For the reaction, N2O5(g)→NO2(g)+12O2(g) The value of rate of disappearance of N2O5 is given as 6.25×10−3molL−1s−1. The rate of formation of NO2 and O2 is given respectively as:
Answer» For the reaction, $N_{2} O_{5} (g) \to N O_{2} (g) + \frac{1}{2} O_{2} (g)$ The value of rate of disappearance of $N_{2} O_{5}$ is given as $6.25 \times 10^{- 3} m o l L^{- 1} s^{- 1} .$ The rate of formation of $N O_{2}$ and $O_{2}$ is given respectively as:

Discussion

15.	Draw the structures of [Ni(CN)4]2- and [PT(Cl)4]2-
Answer» Draw the structures of [Ni(CN)4]2- and [PT(Cl)4]2-

Discussion

16.	The slag formed in the extraction of iron and copper respectively are
Answer» The slag formed in the extraction of iron and copper respectively are

Discussion

17.	Which of the following does not affect the rate of reaction? Amount of the reac†an t taken Physical state of the reac†an t Δ H of reaction Size of vessel
Answer» Which of the following does not affect the rate of reaction? Amount of the reac†an t taken Physical state of the reac†an t Δ H of reaction Size of vessel

Discussion

18.	is energy always released in a combination reaction
Answer» is energy always released in a combination reaction

Discussion

19.	Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.
Answer» Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.

19.

Explain giving reasons: (i) Transition metals and many of their compounds show paramagnetic behaviour. (ii) The enthalpies of atomisation of the transition metals are high. (iii) The transition metals generally form coloured compounds. (iv) Transition metals and their many compounds act as good catalyst.

Answer»

Explain
giving reasons:

(i)
Transition metals and many of their compounds show paramagnetic

behaviour.

(ii)
The enthalpies of atomisation of the
transition metals are high.

(iii)
The transition metals generally form
coloured compounds.

(iv)
Transition metals and their many
compounds act as good catalyst.

Discussion

20.	The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order : (1) K++< Na++< Rb++< Li++ (2) Na++< Li++< K++< Rb++(3) Li++< K++< Na++< Rb++ (4) Rb++< K++< Na++< Li
Answer» The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order : (1) K++< Na++< Rb++< Li++ (2) Na++< Li++< K++< Rb++(3) Li++< K++< Na++< Rb++ (4) Rb++< K++< Na++< Li

Discussion

21.	ctabie11. The equilibrium constant for the reaction, H2(g) + 12(g)2HI(g)is 32 at a given temperature. The equilibrium concentration of 2 and HI are 0.5 x 10- and8 10-3 M respectively. The equilibrium concentration of H2 is(1) 1 x 10-3 M(2) 0.5 x 10-3 M(4) 4\ast 10-3 M(3) 2x 10-3
Answer» ctabie11. The equilibrium constant for the reaction, H2(g) + 12(g)2HI(g)is 32 at a given temperature. The equilibrium concentration of 2 and HI are 0.5 x 10- and8 10-3 M respectively. The equilibrium concentration of H2 is(1) 1 x 10-3 M(2) 0.5 x 10-3 M(4) 4\ast 10-3 M(3) 2x 10-3

Discussion

22.	23. Explain the mechanism of coupling reaction between diazonium ion and beta napthol
Answer» 23. Explain the mechanism of coupling reaction between diazonium ion and beta napthol

Discussion

23.	Explain acidity order in the following oxides of d block elements: MnO, Mn2O3, MnO2 and MnO3
Answer» Explain acidity order in the following oxides of d block elements: MnO, Mn2O3, MnO2 and MnO3

Discussion

24.	N2O4 is in equilibrium with 2 NO2 .Is reaction exothermic or endothermic?
Answer» N2O4 is in equilibrium with 2 NO2 .Is reaction exothermic or endothermic?

Discussion

25.	Question 35Name the functional groups present in the following compounds:(a) CH3COCH2CH2CH2CH3(b) CH3CH2CH2COOH(c) CH3CH2CH2CH2CHO(d) CH3CH2OH
Answer» Question 35 Name the functional groups present in the following compounds: (a) ${CH}_{3} {COCH}_{2} {CH}_{2} {CH}_{2} {CH}_{3}$ (b) ${CH}_{3} {CH}_{2} {CH}_{2} COOH$ (c) ${CH}_{3} {CH}_{2} {CH}_{2} {CH}_{2} CHO$ (d) ${CH}_{3} {CH}_{2} OH$

Discussion

26.	An aqueous solution freezes at -2.55 degree celsius. what will be it's boiling point
Answer» An aqueous solution freezes at -2.55 degree celsius. what will be it's boiling point

Discussion

27.	H3PO4 is syrupy and viscous due to
Answer» $H_{3} P O_{4}$ is syrupy and viscous due to

Discussion

28.	A 0.01 M solution of HCN,CH3COOH,H2CO3 in water ionise to about 0.4%,5% and 3% respectively. The acid which can donate proton readily to water is
Answer» A 0.01 M solution of $H C N, C H_{3} C O O H, H_{2} C O_{3}$ in water ionise to about $0.4 %, 5 % a n d 3 %$ respectively. The acid which can donate proton readily to water is

Discussion

29.	70.write the IUPAC name of complex K3[Fe(CN)5NO] here, ligand is nitrosyl or nitrosonium ion?
Answer» 70.write the IUPAC name of complex K3[Fe(CN)5NO] here, ligand is nitrosyl or nitrosonium ion?

Discussion

30.	Which of the following compound(s) can act as Lewis acid in both monomeric and dimeric form?
Answer» Which of the following compound(s) can act as Lewis acid in both monomeric and dimeric form?

Discussion

31.	If the dipole moment of chlorobenzene is x D then the dipole moment of 1,2,4,5-tetrachlorobenzene is:
Answer» If the dipole moment of chlorobenzene is $x D$ then the dipole moment of 1,2,4,5-tetrachlorobenzene is:

Discussion

32.	Balance the reaction of barium hydroxide and ammonium chloride by the alternative method
Answer» Balance the reaction of barium hydroxide and ammonium chloride by the alternative method

Discussion

33.	Actually why hydrogen peroxide formula H_2O_2 written as 2HO ?
Answer» Actually why hydrogen peroxide formula H_2O_2 written as 2HO ?

Discussion

34.	10 gram of a fairly concentrated solution of cupric sulphate is electrolysed using 0.01 faraday of electrocity. Calculate the mass (in gram) of the resulting solution (Molecular mass of Cu=63.5 g) (give your answer upto to decimal)
Answer» $10$ gram of a fairly concentrated solution of cupric sulphate is electrolysed using $0.01$ faraday of electrocity. Calculate the mass (in gram) of the resulting solution (Molecular mass of $C u = 63.5 g$ ) (give your answer upto to decimal)

Discussion

35.	For real gases, the relation between P,V and T is given by van der Waals equation, (P+an2V2)(V−nb)=nRT.For the gases (CH4,CO2,O2,H2), which gas will have:(i) highest value of a?(ii) lowest value of b?
Answer» For real gases, the relation between $P, V$ and $T$ is given by van der Waals equation, $(P + \frac{a n^{2}}{V^{2}}) (V - n b) = n R T$ . For the gases $(C H_{4}, C O_{2}, O_{2}, H_{2})$ , which gas will have: (i) highest value of $a$ ? (ii) lowest value of $b$ ?

Discussion

36.	The interatomic forces in solids are both attractive and repulsive.Explain the reason
Answer» The interatomic forces in solids are both attractive and repulsive.Explain the reason

Discussion

37.	A mixture of mgcl2 and MgSo4 contains .6 moles of cl and .2 moles of sulphate ions. The equivalent fraction of Mg2+ present in the mixture is
Answer» A mixture of mgcl2 and MgSo4 contains .6 moles of cl and .2 moles of sulphate ions. The equivalent fraction of Mg2+ present in the mixture is

Discussion

38.	Why in organic compounds in which ketone functional group is present we not start numbering from the carbon atom present in ketone ?
Answer» Why in organic compounds in which ketone functional group is present we not start numbering from the carbon atom present in ketone ?

Discussion

39.	Which of the following is a chain transfer agent for free radical polymerization?
Answer» Which of the following is a chain transfer agent for free radical polymerization?

Discussion

40.	Complete the reaction- CH3 \| ___HBr____Peroxide------> CH3-C=CH2
Answer» Complete the reaction- CH₃ \| ^___^HBr_____Peroxide------> CH₃-C=CH₂

Discussion

41.	36 Prove that the volume of a gas at 273^° C is twice its volume at 273K at constant pressure.
Answer» 36 Prove that the volume of a gas at 273^° C is twice its volume at 273K at constant pressure.

Discussion

42.	A battery acid contains24.5% by mass of H_2SO_4 . What is the molality of the solution
Answer» A battery acid contains24.5% by mass of H_2SO_4 . What is the molality of the solution

Discussion

43.	A pump is required to it 1000 kg of water in 1 min, from a well of depth 10 m and eject it with a speed of 10 m/s. The horse power of the pump is [Assume g 10 m/s) (1) 3.35 (3) 5.35 (2) 4.33 (4) 2.35 [(LUZ " ( ,(z)6b ,(z)8L'(L)LI .suy]
Answer» A pump is required to it 1000 kg of water in 1 min, from a well of depth 10 m and eject it with a speed of 10 m/s. The horse power of the pump is [Assume g 10 m/s) (1) 3.35 (3) 5.35 (2) 4.33 (4) 2.35 [(LUZ " ( ,(z)6b ,(z)8L'(L)LI .suy]

Discussion

44.	54 f the heat of hydrogenation of cyclohexane is x1 and that of benzene is x2 the resonance energy of benzene will be a)3x1-x2 b)x1-3x2 c)x1-2x2 d)(x1-x2)/3 why?explain.
Answer» 54 f the heat of hydrogenation of cyclohexane is x1 and that of benzene is x2 the resonance energy of benzene will be a)3x1-x2 b)x1-3x2 c)x1-2x2 d)(x1-x2)/3 why?explain.

Discussion

45.	the unit in which the solubility product of barium phosphate is exprressed is (1)mol^2dm^-6 (2)mol^3dm^-9 (3)mol^4dm^-12 (4)mol^5dm^-15
Answer» the unit in which the solubility product of barium phosphate is exprressed is (1)mol^2dm^-6 (2)mol^3dm^-9 (3)mol^4dm^-12 (4)mol^5dm^-15

Discussion

46.	Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis gives[MP PMT/PET 1988]
Answer» Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis gives [MP PMT/PET 1988]

46.

Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis gives[MP PMT/PET 1988]

Answer»

Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis gives

[MP PMT/PET 1988]

Discussion

47.	If the density of methanol is 0.739 kg/L ,what is its volume needed for making 2.5 L of its 0.25 M solution?
Answer» If the density of methanol is 0.739 kg/L ,what is its volume needed for making 2.5 L of its 0.25 M solution?

Discussion

48.	Which of the following violates the valence bond theory?
Answer» Which of the following violates the valence bond theory?

Discussion

49.	[Co(H2O)3Cl2(CO3)] does not have a net charge... So is it anionic or neutral. The video in app shows anionic.
Answer» [Co(H2O)3Cl2(CO3)] does not have a net charge... So is it anionic or neutral. The video in app shows anionic.

Discussion

50.	when CH_{3 }COCH_{3 }reacts withLiAlH_4 gives CH_{3 }CH_2OH .BUT WHEN CH_3COCH3COCH2OH GIVES CH3CHOHCH3CHOHCH2OH IS IT CORRECT? IF CORRECT SO WHY
Answer» when CH_{3 }COCH_{3 }reacts withLiAlH_4 gives CH_{3 }CH_2OH .BUT WHEN CH_3COCH3COCH2OH GIVES CH3CHOHCH3CHOHCH2OH IS IT CORRECT? IF CORRECT SO WHY

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How to find bond order c-c in benzene?

In the mixture of NaHCO3 and Na2CO3 volume of a given HCl required is 'x' ml with phenolphthalein indicator and further 'y' ml required with methyl orange indicator. Hence volume of HCl for complete reaction of NaHCO3 is

If pKb for the fluoride ion at 25∘C is 10.83, the ionization constant of hydrofluoric acid in water at this temperature is

Solubility of a gas in a liquid is directly proportional to the pressure of gas. This is in accordance with

2 If the magnetic quantum number of an atom is represented by -3 then the principal quantum number will be?

A mixture of white bauxite powder and coke is heated in nitrogen gas very strongly . The products are

Which effects àre shown by phenyl ring(i.e only benzene)?

35.Calculate the equivalent weight of following underlined CuSO4 + KI > Cu2I2 + K2SO4 + I2

How to find the hybridizationof[Ni(CN)4]2- n ntand the d orbital used in it. What is the hybridization of NO2?

Catalytic hydrogenation reactivity series in alkenes

why non stotiometric defect occurs in crystals?

The end product of (4n+2) radioactive disintegration series is

For the reaction, N2O5(g)→NO2(g)+12O2(g) The value of rate of disappearance of N2O5 is given as 6.25×10−3molL−1s−1. The rate of formation of NO2 and O2 is given respectively as:

Draw the structures of [Ni(CN)4]2- and [PT(Cl)4]2-

The slag formed in the extraction of iron and copper respectively are

Which of the following does not affect the rate of reaction? Amount of the reac†an t taken Physical state of the reac†an t Δ H of reaction Size of vessel

is energy always released in a combination reaction

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order : (1) K++< Na++< Rb++< Li++ (2) Na++< Li++< K++< Rb++(3) Li++< K++< Na++< Rb++ (4) Rb++< K++< Na++< Li

ctabie11. The equilibrium constant for the reaction, H2(g) + 12(g)2HI(g)is 32 at a given temperature. The equilibrium concentration of 2 and HI are 0.5 x 10- and8 10-3 M respectively. The equilibrium concentration of H2 is(1) 1 x 10-3 M(2) 0.5 x 10-3 M(4) 4\ast 10-3 M(3) 2x 10-3

23. Explain the mechanism of coupling reaction between diazonium ion and beta napthol

Explain acidity order in the following oxides of d block elements: MnO, Mn2O3, MnO2 and MnO3

N2O4 is in equilibrium with 2 NO2 .Is reaction exothermic or endothermic?

Question 35Name the functional groups present in the following compounds:(a) CH3COCH2CH2CH2CH3(b) CH3CH2CH2COOH(c) CH3CH2CH2CH2CHO(d) CH3CH2OH

An aqueous solution freezes at -2.55 degree celsius. what will be it's boiling point

H3PO4 is syrupy and viscous due to

A 0.01 M solution of HCN,CH3COOH,H2CO3 in water ionise to about 0.4%,5% and 3% respectively. The acid which can donate proton readily to water is

70.write the IUPAC name of complex K3[Fe(CN)5NO] here, ligand is nitrosyl or nitrosonium ion?

Which of the following compound(s) can act as Lewis acid in both monomeric and dimeric form?

If the dipole moment of chlorobenzene is x D then the dipole moment of 1,2,4,5-tetrachlorobenzene is:

Balance the reaction of barium hydroxide and ammonium chloride by the alternative method

Actually why hydrogen peroxide formula H_2O_2 written as 2HO ?

10 gram of a fairly concentrated solution of cupric sulphate is electrolysed using 0.01 faraday of electrocity. Calculate the mass (in gram) of the resulting solution (Molecular mass of Cu=63.5 g) (give your answer upto to decimal)

For real gases, the relation between P,V and T is given by van der Waals equation, (P+an2V2)(V−nb)=nRT.For the gases (CH4,CO2,O2,H2), which gas will have:(i) highest value of a?(ii) lowest value of b?

The interatomic forces in solids are both attractive and repulsive.Explain the reason

A mixture of mgcl2 and MgSo4 contains .6 moles of cl and .2 moles of sulphate ions. The equivalent fraction of Mg2+ present in the mixture is

Why in organic compounds in which ketone functional group is present we not start numbering from the carbon atom present in ketone ?

Which of the following is a chain transfer agent for free radical polymerization?

Complete the reaction- CH3 | ___HBr____Peroxide------> CH3-C=CH2

36 Prove that the volume of a gas at 273^° C is twice its volume at 273K at constant pressure.

A battery acid contains24.5% by mass of H_2SO_4 . What is the molality of the solution

A pump is required to it 1000 kg of water in 1 min, from a well of depth 10 m and eject it with a speed of 10 m/s. The horse power of the pump is [Assume g 10 m/s) (1) 3.35 (3) 5.35 (2) 4.33 (4) 2.35 [(LUZ " ( ,(z)6b ,(z)8L'(L)LI .suy]

54 f the heat of hydrogenation of cyclohexane is x1 and that of benzene is x2 the resonance energy of benzene will be a)3x1-x2 b)x1-3x2 c)x1-2x2 d)(x1-x2)/3 why?explain.

the unit in which the solubility product of barium phosphate is exprressed is (1)mol^2dm^-6 (2)mol^3dm^-9 (3)mol^4dm^-12 (4)mol^5dm^-15

Formaldehyde gives an additive product with methyl magnesium iodide which on aqueous hydrolysis gives[MP PMT/PET 1988]

If the density of methanol is 0.739 kg/L ,what is its volume needed for making 2.5 L of its 0.25 M solution?

Which of the following violates the valence bond theory?

[Co(H2O)3Cl2(CO3)] does not have a net charge... So is it anionic or neutral. The video in app shows anionic.

when CH_{3 }COCH_{3 }reacts withLiAlH_4 gives CH_{3 }CH_2OH .BUT WHEN CH_3COCH3COCH2OH GIVES CH3CHOHCH3CHOHCH2OH IS IT CORRECT? IF CORRECT SO WHY

Complete the reaction- CH3 | _HBr__Peroxide------> CH3-C=CH2