46295 + Interview Questions in Chemistry

1.	3.35%(w/w)solution of ethylene glycol in water, an antifreezer used in automobiles in radiators as a coolant. It lowers freezing point of water to -17.6C .Calculate the mole fraction of the components.
Answer» 3.35%(w/w)solution of ethylene glycol in water, an antifreezer used in automobiles in radiators as a coolant. It lowers freezing point of water to -17.6C .Calculate the mole fraction of the components.

Discussion

2.	Arrange the following in the decreasing order of their van der Waals constant ′a′ values: H2O, CO2, Ar
Answer» Arrange the following in the decreasing order of their van der Waals constant $^{'} a^{'}$ values: $H_{2} O, C O_{2}, A r$

Discussion

3.	What is the condition when the magnification is -1?
Answer» What is the condition when the magnification is -1?

Discussion

4.	The average concentration of Na+ ion in human body is 3.0 to 3.9gm per litre. The molarity of Na+ ion is about?
Answer» The average concentration of Na+ ion in human body is 3.0 to 3.9gm per litre. The molarity of Na+ ion is about?

Discussion

5.	The bond order of CO+ is
Answer» The bond order of CO+ is

Discussion

6.	The brass scale of a barometer gives a reading at zero degree celsius. The Barometer reads 75 cm at 27 degree Celsius. What is the correct atmospheric pressure at 27 degree Celsius. The coefficient of linear expansion Alpha of brass is 2.0 × 10 ^-5 /°c
Answer» The brass scale of a barometer gives a reading at zero degree celsius. The Barometer reads 75 cm at 27 degree Celsius. What is the correct atmospheric pressure at 27 degree Celsius. The coefficient of linear expansion Alpha of brass is 2.0 × 10 ^-5 /°c

Discussion

7.	Why does NH3 have a higher dipole moment than H2S?
Answer» Why does NH3 have a higher dipole moment than H2S?

Discussion

8.	Method used for the concentration of tin ore is
Answer» Method used for the concentration of tin ore is

Discussion

9.	How can you determine the rate law of the following reaction? 2NO(g)+O2(g)⟶2NO2(g)
Answer» How can you determine the rate law of the following reaction? $2 N O (g) + O_{2} (g) ⟶ 2 N O_{2} (g)$

9.

How can you determine the rate law of the following reaction? 2NO(g)+O2(g)⟶2NO2(g)

Answer»

How can you determine the rate law of the following reaction?

$2 N O (g) + O_{2} (g) ⟶ 2 N O_{2} (g)$

Discussion

10.	Question 10 In which of the following melecule/ion all the bonds are not equal? (a) XeF4 (b) BF−4 (c) C2H4 (d) SiF4
Answer» Question 10 In which of the following melecule/ion all the bonds are not equal? (a) $X e F_{4}$ (b) $B F_{4}^{-}$ (c) $C_{2} H_{4}$ (d) $S i F_{4}$

10.

Question 10 In which of the following melecule/ion all the bonds are not equal? (a) XeF4 (b) BF−4 (c) C2H4 (d) SiF4

Answer»

Question 10

In which of the following melecule/ion all the bonds are not equal?

(a) $X e F_{4}$

(b) $B F_{4}^{-}$

(c) $C_{2} H_{4}$

(d) $S i F_{4}$

Discussion

11.	If the equilibrium concentrations for X2,Y2 and XY are 1.2x103M. 5.83x1012M and 8.9x10*2PM respectively, What was the initial concentration X2 before the reaction occured to form XY?
Answer» If the equilibrium concentrations for X2,Y2 and XY are 1.2x103M. 5.83x1012M and 8.9x10*2PM respectively, What was the initial concentration X2 before the reaction occured to form XY?

Discussion

12.	An α− particle is moving with a velocity 130th of the velocity of light. If the uncertainty in position is 3.31π pm, then the minimum uncertainty in the kinetic energy is y×10−16 J. Calculate the value of y
Answer» An $α -$ particle is moving with a velocity $\frac{1}{30} t h$ of the velocity of light. If the uncertainty in position is $\frac{3.31}{π} pm$ , then the minimum uncertainty in the kinetic energy is $y \times 10^{- 16} J$ . Calculate the value of $y$

Discussion

13.	Correct option(s) for the following sequence of reactions is (are)
Answer» Correct option(s) for the following sequence of reactions is (are)

Discussion

14.	For the given reaction:2CuBr(aq)→CuBr2(aq)+Cu(s)What will be the equivalent mass of CuBr if molecular weight of CuBr is M?
Answer» For the given reaction: $2 C u B r (a q) \to C u B r_{2} (a q) + C u (s)$ What will be the equivalent mass of $C u B r$ if molecular weight of $C u B r$ is $M$ ?

Discussion

15.	100ml of 1M Ch3cooh is mixed with 200ml of 1M NaOh and for sodium acetate. Calculate ph of the solution
Answer» 100ml of 1M Ch3cooh is mixed with 200ml of 1M NaOh and for sodium acetate. Calculate ph of the solution

Discussion

16.	Which of the following is not applicable to enantiomers?
Answer» Which of the following is not applicable to enantiomers?

Discussion

17.	The Van't Hoff factor will be highest for
Answer» The Van't Hoff factor will be highest for

Discussion

18.	Parallex method
Answer» Parallex method

Discussion

19.	the average molar mass of CO and CO2 of the mixture is 37.the mole percentage of C
Answer» the average molar mass of CO and CO2 of the mixture is 37.the mole percentage of C

Discussion

20.	A: If a stationary nucleus emits an a-particle, the de Broglie wavelengths of the daughter nucleus and the a-particle are equal. R:The magnitudes of the linear momenta of the daughter nucleus and the o-particle are the same.
Answer» A: If a stationary nucleus emits an a-particle, the de Broglie wavelengths of the daughter nucleus and the a-particle are equal. R:The magnitudes of the linear momenta of the daughter nucleus and the o-particle are the same.

Discussion

21.	What is lanthanoid contraction ? Mention 3 consequences
Answer» What is lanthanoid contraction ? Mention 3 consequences

Discussion

22.	A square planar compound or complex is formed by hybridisation of which atomic orbitals?
Answer» A square planar compound or complex is formed by hybridisation of which atomic orbitals?

Discussion

23.	The decreasing order of the size of voids in a closed packed structure is 1) octahedral, tetrahedral, cubical, triangular 2)triangular, tetrahedral, octahedral, cubicle 3)octahedral,cubical,tetrahedral, triangular 4)cubical,octahedral, tetrahedral, triangular
Answer» The decreasing order of the size of voids in a closed packed structure is 1) octahedral, tetrahedral, cubical, triangular 2)triangular, tetrahedral, octahedral, cubicle 3)octahedral,cubical,tetrahedral, triangular 4)cubical,octahedral, tetrahedral, triangular

Discussion

24.	The basic oxide(s) among the following is/are:
Answer» The basic oxide(s) among the following is/are:

Discussion

25.	When we will use Hannay and Smith formula/equation ? ORIn which condition we will use Hannay and Smith formula/equation ?
Answer» When we will use Hannay and Smith formula/equation ? OR In which condition we will use Hannay and Smith formula/equation ?

Discussion

26.	27. Which of the following is observed in ethylene molecule A - electromeric effect B - inductive effect C - homolytic fission D - none of these (kindly explain in detail how electromeric effect is seen while inductive effect is not seen)
Answer» 27. Which of the following is observed in ethylene molecule A - electromeric effect B - inductive effect C - homolytic fission D - none of these (kindly explain in detail how electromeric effect is seen while inductive effect is not seen)

Discussion

27.	(a) Illustrate the following reactions giving suitable example in each case : (i) Hoffmann bromaimide degradation reaction (ii) Diazotisation (iii) Gabriel phthalimide synthesis (b) Distinguish between the following pairs of compounds : (i) Aniline and N-methylaniline (ii) (CH3)2NH and (CH3)3N
Answer» (a) Illustrate the following reactions giving suitable example in each case : (i) Hoffmann bromaimide degradation reaction (ii) Diazotisation (iii) Gabriel phthalimide synthesis (b) Distinguish between the following pairs of compounds : (i) Aniline and N-methylaniline $(i i) (C H_{3})_{2} N H$ and $(C H_{3})_{3} N$

Discussion

28.	One of the reaction that takes place in producing steel from iron ore is the reduction of iron(II) oxide by carbon monoxide to give iron metal and CO2. FeO (s)+CO (g)⇌Fe (s)+CO2 (g); KP=0.265 atm at 1050K. What are the equilibrium partial pressures of CO and CO2 respectively at 1050 K if the initial partial pressures are: PCO=1.4 atm and pCO2=0.80 atm?
Answer» One of the reaction that takes place in producing steel from iron ore is the reduction of iron(II) oxide by carbon monoxide to give iron metal and $C O_{2} . F e O (s) + C O (g) ⇌ F e (s) + C O_{2} (g); K_{P} = 0.265$ atm at 1050K. What are the equilibrium partial pressures of CO and $C O_{2}$ respectively at 1050 K if the initial partial pressures are: $P_{C O} = 1.4$ atm and $p_{C O_{2}} = 0.80 a t m ?$

Discussion

29.	What is polymerisation?
Answer» What is polymerisation?

Discussion

30.	How much water must be added to 300 mL of 0.2 M solution of CH3COOH (Ka=1.8×10−5) for the degree of ionisation (α) of the acid to double?
Answer» How much water must be added to $300 mL$ of $0.2 M$ solution of $C H_{3} C O O H (K_{a} = 1.8 \times 10^{- 5})$ for the degree of ionisation $(α)$ of the acid to double?

Discussion

31.	At 27 Celciu, one mole of an ideal gas compressed isothermally & reversibly from a pressure of 2 atm to 10 atm. Calculate E and q in calorie.
Answer» At 27 Celciu, one mole of an ideal gas compressed isothermally & reversibly from a pressure of 2 atm to 10 atm. Calculate E and q in calorie.

Discussion

32.	IE(I) and IE(II) of Mg are 178 and 348 kcal mol−1. The energy required for the reaction Mg→Mg2++2e− is:
Answer» $I E (I)$ and $I E (I I)$ of $M g$ are $178$ and $348 {kcal mol}^{- 1}$ . The energy required for the reaction $M g \to M g^{2 +} + 2 e^{-}$ is:

Discussion

33.	If the Taylor's tool life exponent n is 0.2, and the tool changing time is 1.5min, then the tool life (in min) for maximum production rate is
Answer» If the Taylor's tool life exponent $n$ is $0.2$ , and the tool changing time is $1.5 m i n$ , then the tool life (in $m i n$ ) for maximum production rate is

Discussion

34.	NH4COONH2 (s) 2NH3 (g) + CO2 (g). If equilibrium pressure of gaseous mixture is 3 atm then Kp will be 1) 4 2) 27 3) 4/27 4)1/27
Answer» NH4COONH2 (s) 2NH3 (g) + CO2 (g). If equilibrium pressure of gaseous mixture is 3 atm then Kp will be 1) 4 2) 27 3) 4/27 4)1/27

Discussion

35.	what is the different of dark and light reaction?
Answer» what is the different of dark and light reaction?

Discussion

36.	Compare the dipole moment of the following. CH3F,CH3Cl,CH3Br, CH3 I.
Answer» Compare the dipole moment of the following. CH₃F,CH₃Cl,CH₃Br, CH3 I.

36.

Compare the dipole moment of the following. CH3F,CH3Cl,CH3Br, CH3 I.

Answer»

Compare the dipole moment of the following.

CH₃F,CH₃Cl,CH₃Br, CH3 I.

Discussion

37.	The stabilization of a dispered phase in a lyophobic colloid is due to:
Answer» The stabilization of a dispered phase in a lyophobic colloid is due to:

Discussion

38.	If A+B> A+C and A+B > A-C then1) B>02)A>03)C>04)None of these
Answer» If A+B> A+C and A+B > A-C then 1) B>0 2)A>0 3)C>0 4)None of these

Discussion

39.	Two capillaries made of the same material with radii r1=1mm and r2=2mm. The rise of the liquid in one capillary (r1=1mm) is 30 cm, then the rise in the other will be
Answer» Two capillaries made of the same material with radii $r_{1}$ =1mm and $r_{2}$ =2mm. The rise of the liquid in one capillary ( $r_{1}$ =1mm) is 30 cm, then the rise in the other will be

39.

Two capillaries made of the same material with radii r1=1mm and r2=2mm. The rise of the liquid in one capillary (r1=1mm) is 30 cm, then the rise in the other will be

Answer»

Two capillaries made of the same material with radii $r_{1}$ =1mm and $r_{2}$ =2mm. The rise of the liquid in one capillary ( $r_{1}$ =1mm) is 30 cm, then the rise in the other will be

Discussion

40.	Question 27Match the substances in Column A with their applications given in Column B.
Answer» Question 27 Match the substances in Column A with their applications given in Column B.

Discussion

41.	group have the maximum leaving ability amongst the given groups in the nucleophilic substitution reactions.
Answer» group have the maximum leaving ability amongst the given groups in the nucleophilic substitution reactions.

Discussion

42.	Some nuclei of a radioactive material are undergoing radioactive decay. The time gap between the instances when a quarter of the nuclei have decayed and when half of the nuclei have decayed is given as : (where λ is the decay constant)
Answer» Some nuclei of a radioactive material are undergoing radioactive decay. The time gap between the instances when a quarter of the nuclei have decayed and when half of the nuclei have decayed is given as : (where $λ$ is the decay constant)

Discussion

43.	what is meant by long range melting point?
Answer» what is meant by long range melting point?

Discussion

44.	two loops PandQ are made from a uniform wire .The radii ofP and Q areR1and R2 respectively and their moment of inertia axes normallc through centre are I1 and I2 respectively if I2/I1 =4 then find R2/R
Answer» two loops PandQ are made from a uniform wire .The radii ofP and Q areR1and R2 respectively and their moment of inertia axes normallc through centre are I1 and I2 respectively if I2/I1 =4 then find R2/R

Discussion

45.	Which of the following metal carbonyl does not exist as monomer?
Answer» Which of the following metal carbonyl does not exist as monomer?

Discussion

46.	Two perfect gases at Absolute Temperature T1 and t2 are mixed in a closed vessel their number of Moles are N1andN2 respectively assuming no heat loss the surrounding the final temperature of the mixture will be
Answer» Two perfect gases at Absolute Temperature T1 and t2 are mixed in a closed vessel their number of Moles are N1andN2 respectively assuming no heat loss the surrounding the final temperature of the mixture will be

Discussion

47.	Explain with structure the number of geometrical and optical isomers in type [M(AA)3].
Answer» Explain with structure the number of geometrical and optical isomers in type [M(AA)3].

Discussion

48.	15 mL of an aqueous solution of Fe2+ in the acidic medium completely reacted with 20 mL of 0.03 M aqueous Cr2O72−. The molarity of the Fe2+ solution is _______ ×10−2 M. (Round off to the Nearest Integer).
Answer» 15 $m L$ of an aqueous solution of $F e^{2 +}$ in the acidic medium completely reacted with 20 $m L$ of 0.03 $M$ aqueous $C r_{2} {O_{7}}^{2 -}$ . The molarity of the $F e^{2 +}$ solution is _______ $\times 10^{- 2}$ $M$ . (Round off to the Nearest Integer).

Discussion

49.	(a) What are analgesics?(b) How do camphor and menthol relieve pain?
Answer» (a) What are analgesics? (b) How do camphor and menthol relieve pain?

49.

(a) What are analgesics?(b) How do camphor and menthol relieve pain?

Answer»

(a) What are analgesics?

(b) How do camphor and menthol relieve pain?

Discussion

50.	The addition of ammonium chloride to 0.1 M acetic acid will cause:
Answer» The addition of ammonium chloride to 0.1 M acetic acid will cause:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

3.35%(w/w)solution of ethylene glycol in water, an antifreezer used in automobiles in radiators as a coolant. It lowers freezing point of water to -17.6C .Calculate the mole fraction of the components.

Arrange the following in the decreasing order of their van der Waals constant ′a′ values: H2O, CO2, Ar

What is the condition when the magnification is -1?

The average concentration of Na+ ion in human body is 3.0 to 3.9gm per litre. The molarity of Na+ ion is about?

The bond order of CO+ is

The brass scale of a barometer gives a reading at zero degree celsius. The Barometer reads 75 cm at 27 degree Celsius. What is the correct atmospheric pressure at 27 degree Celsius. The coefficient of linear expansion Alpha of brass is 2.0 × 10 ^-5 /°c

Why does NH3 have a higher dipole moment than H2S?

Method used for the concentration of tin ore is

How can you determine the rate law of the following reaction? 2NO(g)+O2(g)⟶2NO2(g)

Question 10 In which of the following melecule/ion all the bonds are not equal? (a) XeF4 (b) BF−4 (c) C2H4 (d) SiF4

If the equilibrium concentrations for X2,Y2 and XY are 1.2x10*3M. 5.83x10*12M and 8.9x10*2PM respectively, What was the initial concentration X2 before the reaction occured to form XY?

An α− particle is moving with a velocity 130th of the velocity of light. If the uncertainty in position is 3.31π pm, then the minimum uncertainty in the kinetic energy is y×10−16 J. Calculate the value of y

Correct option(s) for the following sequence of reactions is (are)

For the given reaction:2CuBr(aq)→CuBr2(aq)+Cu(s)What will be the equivalent mass of CuBr if molecular weight of CuBr is M?

100ml of 1M Ch3cooh is mixed with 200ml of 1M NaOh and for sodium acetate. Calculate ph of the solution

Which of the following is not applicable to enantiomers?

The Van't Hoff factor will be highest for

Parallex method

the average molar mass of CO and CO2 of the mixture is 37.the mole percentage of C

A: If a stationary nucleus emits an a-particle, the de Broglie wavelengths of the daughter nucleus and the a-particle are equal. R:The magnitudes of the linear momenta of the daughter nucleus and the o-particle are the same.

What is lanthanoid contraction ? Mention 3 consequences

A square planar compound or complex is formed by hybridisation of which atomic orbitals?

The decreasing order of the size of voids in a closed packed structure is 1) octahedral, tetrahedral, cubical, triangular 2)triangular, tetrahedral, octahedral, cubicle 3)octahedral,cubical,tetrahedral, triangular 4)cubical,octahedral, tetrahedral, triangular

The basic oxide(s) among the following is/are:

When we will use Hannay and Smith formula/equation ? ORIn which condition we will use Hannay and Smith formula/equation ?

27. Which of the following is observed in ethylene molecule A - electromeric effect B - inductive effect C - homolytic fission D - none of these (kindly explain in detail how electromeric effect is seen while inductive effect is not seen)

(a) Illustrate the following reactions giving suitable example in each case : (i) Hoffmann bromaimide degradation reaction (ii) Diazotisation (iii) Gabriel phthalimide synthesis (b) Distinguish between the following pairs of compounds : (i) Aniline and N-methylaniline (ii) (CH3)2NH and (CH3)3N

What is polymerisation?

How much water must be added to 300 mL of 0.2 M solution of CH3COOH (Ka=1.8×10−5) for the degree of ionisation (α) of the acid to double?

At 27 Celciu, one mole of an ideal gas compressed isothermally & reversibly from a pressure of 2 atm to 10 atm. Calculate E and q in calorie.

IE(I) and IE(II) of Mg are 178 and 348 kcal mol−1. The energy required for the reaction Mg→Mg2++2e− is:

If the Taylor's tool life exponent n is 0.2, and the tool changing time is 1.5min, then the tool life (in min) for maximum production rate is

NH4COONH2 (s) 2NH3 (g) + CO2 (g). If equilibrium pressure of gaseous mixture is 3 atm then Kp will be 1) 4 2) 27 3) 4/27 4)1/27

what is the different of dark and light reaction?

Compare the dipole moment of the following. CH3F,CH3Cl,CH3Br, CH3 I.

The stabilization of a dispered phase in a lyophobic colloid is due to:

If A+B> A+C and A+B > A-C then1) B>02)A>03)C>04)None of these

Two capillaries made of the same material with radii r1=1mm and r2=2mm. The rise of the liquid in one capillary (r1=1mm) is 30 cm, then the rise in the other will be

Question 27Match the substances in Column A with their applications given in Column B.

group have the maximum leaving ability amongst the given groups in the nucleophilic substitution reactions.

Some nuclei of a radioactive material are undergoing radioactive decay. The time gap between the instances when a quarter of the nuclei have decayed and when half of the nuclei have decayed is given as : (where λ is the decay constant)

what is meant by long range melting point?

two loops PandQ are made from a uniform wire .The radii ofP and Q areR1and R2 respectively and their moment of inertia axes normallc through centre are I1 and I2 respectively if I2/I1 =4 then find R2/R

Which of the following metal carbonyl does not exist as monomer?

Two perfect gases at Absolute Temperature T1 and t2 are mixed in a closed vessel their number of Moles are N1andN2 respectively assuming no heat loss the surrounding the final temperature of the mixture will be

Explain with structure the number of geometrical and optical isomers in type [M(AA)3].

15 mL of an aqueous solution of Fe2+ in the acidic medium completely reacted with 20 mL of 0.03 M aqueous Cr2O72−. The molarity of the Fe2+ solution is _______ ×10−2 M. (Round off to the Nearest Integer).

(a) What are analgesics?(b) How do camphor and menthol relieve pain?

The addition of ammonium chloride to 0.1 M acetic acid will cause:

If the equilibrium concentrations for X2,Y2 and XY are 1.2x103M. 5.83x1012M and 8.9x10*2PM respectively, What was the initial concentration X2 before the reaction occured to form XY?