46295 + Interview Questions in Chemistry

1.	Which of the following alkane ( having molecular weight = 86) on bromination gives only two monobromo derivatives (excluding stereoisomers) ?
Answer» Which of the following alkane ( having molecular weight = 86) on bromination gives only two monobromo derivatives (excluding stereoisomers) ?

Discussion

2.	We are not concerned _______ him ________ the business.
Answer» We are not concerned _______ him ________ the business.

Discussion

3.	In the reaction, 2X+B2H6→[BH2(X)2]+[BH4]− the amine(s) X is/are
Answer» In the reaction, $2 X + B_{2} H_{6} \to [B H_{2} (X)_{2}]^{+} [B H_{4}]^{-}$ the amine(s) X is/are

Discussion

4.	27. The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl(where en is ethylenediamine)is 1)7 2)8 3)9 4)6
Answer» 27. The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl(where en is ethylenediamine)is 1)7 2)8 3)9 4)6

Discussion

5.	49.which of the following combination will form most stable ionic bond?? (also explain how) a) N, O b) Li , I c) Fe, Cl d) Na , F
Answer» 49.which of the following combination will form most stable ionic bond?? (also explain how) a) N, O b) Li , I c) Fe, Cl d) Na , F

Discussion

6.	At 300 K, 36 g ofglucose present in a litre of its solution has an osmotic pressure of4.98 bar. If the osmotic pressure of the solution is 1.52 bars at thesame temperature, what would be its concentration?
Answer» At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration?

Discussion

7.	Complete combustion of 3 g of ethane gives x ×1022 molecules of water. The value of x is _____ [Round off to the Nearest Integer]. [Use: NA=6.023×1023; Atomic masses in u : C : 12.0; O : 16.0 : H : 1.0 ]
Answer» Complete combustion of $3 g$ of ethane gives x $\times 10^{22}$ molecules of water. The value of x is _____ [Round off to the Nearest Integer]. [Use: $N_{A} = 6.023 \times 10^{23};$ Atomic masses in u : C : 12.0; O : 16.0 : H : 1.0 ]

Discussion

8.	Why Benzaldehyde not give red precipitate with fehling solution?
Answer» Why Benzaldehyde not give red precipitate with fehling solution?

Discussion

9.	Ortho nitro chlorobenzene with liquid ammonia and nanh 2
Answer» Ortho nitro chlorobenzene with liquid ammonia and nanh 2

Discussion

10.	Co-ordination number of body centered unit cell is taken as 8 as body centered atom touches 8 atoms but what about the corner atom. Isn't their coordination number seen?
Answer» Co-ordination number of body centered unit cell is taken as 8 as body centered atom touches 8 atoms but what about the corner atom. Isn't their coordination number seen?

Discussion

11.	The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is x×10−4. The value of x is ______(Nearest intger). [log2.5=0.3979]
Answer» The pH of a solution obtained by mixing $50 m L$ of $1 M H C l$ and $30 m L$ of $1 M N a O H$ is $x \times 10^{- 4}$ . The value of x is ______(Nearest intger). [log2.5=0.3979]

Discussion

12.	if l=n+1 and one spin has 3electron then find the maximum no. of element that can be accomodated in first perio
Answer» if l=n+1 and one spin has 3electron then find the maximum no. of element that can be accomodated in first perio

Discussion

13.	one ship is sailing south with a velocity of 15\sqrt{2 }km/hr and another south - east at the rate of 15km/hr . The relative velocity of second ship with respect to the first ship is (1) 10 km/hr S-W (2) 15 km/hr S- W (3) 10 km/hr N- E (4) 15 km/hr N-
Answer» one ship is sailing south with a velocity of 15\sqrt{2 }km/hr and another south - east at the rate of 15km/hr . The relative velocity of second ship with respect to the first ship is (1) 10 km/hr S-W (2) 15 km/hr S- W (3) 10 km/hr N- E (4) 15 km/hr N-

Discussion

14.	What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: 29, 59, 74, 95, 102, 104.
Answer» What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: 29, 59, 74, 95, 102, 104.

Discussion

15.	Which of the following will be most acidic?
Answer» Which of the following will be most acidic?

Discussion

16.	Prove the following statements.a. If the angle of incidence and angle of emergence of a light ray falling on a glass slab are i and e respectively, prove that, i = e.b. A raibow is the combined effect of the refraction, dispersion, and total internal reflection of light.
Answer» Prove the following statements. a. If the angle of incidence and angle of emergence of a light ray falling on a glass slab are i and e respectively, prove that, i = e. b. A raibow is the combined effect of the refraction, dispersion, and total internal reflection of light.

Discussion

17.	Which of the following compound(s) will show geometrical isomersm?
Answer» Which of the following compound(s) will show geometrical isomersm?

Discussion

18.	Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dilute HCl followed by addition to an alkaline solution of β−naphthol is:
Answer» Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with $N a N O_{2}$ in dilute $H C l$ followed by addition to an alkaline solution of $β -$ naphthol is:

Discussion

19.	How to find number of moles in 24 g nitrogen
Answer» How to find number of moles in 24 g nitrogen

Discussion

20.	A solution contains 0.1 M H2S and 0.3 M HCl. Given Ka1 and Ka2 for H2S are 10−7 and 1.8×10−13 respectively. If the concentration of HS− ions is x×10−8 M, then what is the value of x? (Give your answer upto two decimal points)
Answer» A solution contains $0.1$ M $H_{2} S$ and $0.3$ M $H C l$ . Given $K_{a_{1}}$ and $K_{a_{2}}$ for $H_{2} S$ are $10^{- 7}$ and $1.8 \times 10^{- 13}$ respectively. If the concentration of $H S^{-}$ ions is $x \times 10^{- 8} M$ , then what is the value of $x$ ? (Give your answer upto two decimal points)

Discussion

21.	what is effect of increase in temperature and pressure on the following system at equilibrium N2(g)+3H2(g)NH3+HEAT
Answer» what is effect of increase in temperature and pressure on the following system at equilibrium N2(g)+3H2(g)<-------->NH3+HEAT

Discussion

22.	The compound which contains two P–OH and two P–H bonds is:
Answer» The compound which contains two $P - O H$ and two $P - H$ bonds is:

Discussion

23.	Arrange the following type of solid in the increasing order of melting point
Answer» Arrange the following type of solid in the increasing order of melting point

Discussion

24.	Which of the following statements is not correctwhen a mixture of NaCl and K,Cr20, is gentlywarmed with conc. H,SO,(1) A deep red vapour is evolved(2) The vapour when passed into NaOH solutiongives a yellow solution of Na,CrO4(3) Chlorine gas is evolved(4) Chromyl chloride is formed
Answer» Which of the following statements is not correctwhen a mixture of NaCl and K,Cr20, is gentlywarmed with conc. H,SO,(1) A deep red vapour is evolved(2) The vapour when passed into NaOH solutiongives a yellow solution of Na,CrO4(3) Chlorine gas is evolved(4) Chromyl chloride is formed

Discussion

25.	The major product formed in the reaction given below is
Answer» The major product formed in the reaction given below is

Discussion

26.	The product(s) obtained on reaction of HgSO4+H2SO4 with 1-butyne would be
Answer» The product(s) obtained on reaction of $H g S O_{4} + H_{2} S O_{4}$ with 1-butyne would be

Discussion

27.	ionic conduc†an ce of H+ and SO4-- are x and yS cm 2 mol-1 .Hence evquivalant conduc†an ce is?
Answer» ionic conduc†an ce of H+ and SO4-- are x and yS cm 2 mol-1 .Hence evquivalant conduc†an ce is?

Discussion

28.	How can oxidation be addition of electronegative elements (gainers of e) while oxidation is removal of e
Answer» How can oxidation be addition of electronegative elements (gainers of e) while oxidation is removal of e

Discussion

29.	21. Which of the following compound will not produce propene by reaction with HBr followed by elimination or direct only elimination reaction? 1) cyclopropane 2) propanol (CH3CH2CH2OH) 3) CH2=C=O 4) propyl bromide (CH3CH2CH2Br)
Answer» 21. Which of the following compound will not produce propene by reaction with HBr followed by elimination or direct only elimination reaction? 1) cyclopropane 2) propanol (CH3CH2CH2OH) 3) CH2=C=O 4) propyl bromide (CH3CH2CH2Br)

Discussion

30.	Do alkalis dissociate in water?
Answer» Do alkalis dissociate in water?

Discussion

31.	1 mole of NH3 gas at 27 oC is expanded in reversible adiabatic condition to make volume 64 times of its initial volume. (γ=43) The magnitude of work done (in cal) will be : (Give your answer in cal and upto two decimal only)
Answer» 1 mole of $N H_{3}$ gas at $27^{o} C$ is expanded in reversible adiabatic condition to make volume 64 times of its initial volume. $(γ = \frac{4}{3})$ The magnitude of work done (in cal) will be : (Give your answer in cal and upto two decimal only)

Discussion

32.	The equilibrium constant Kp for the reaction A⇌2B is related to degree of dissociation α of A and pressure P as:
Answer» The equilibrium constant $K_{p}$ for the reaction $A ⇌ 2 B$ is related to degree of dissociation $α$ of A and pressure P as:

Discussion

33.	2 kg of ice at −20o C is mixed with 5 kg of water at 20o C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg/o C and 0.5 kcal/kg/o C while the latent heat of fusion of ice is 80 kcal/kg
Answer» 2 kg of ice at $- 20^{o} C$ is mixed with 5 kg of water at $20^{o} C$ in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 $k c a l / k g /^{o} C$ and 0.5 $k c a l / k g /^{o} C$ while the latent heat of fusion of ice is 80 kcal/kg

Discussion

34.	Which of the following does not obey octet rule?
Answer» Which of the following does not obey octet rule?

Discussion

35.	The binding energy per nucleon for C12 is 7.68 MeV and that for C13 is 7.47 MeV. The energy required to remove a neutron from C13 is
Answer» The binding energy per nucleon for $C^{12}$ is $7.68 MeV$ and that for $C^{13}$ is $7.47 MeV$ . The energy required to remove a neutron from $C^{13}$ is

Discussion

36.	Which of the following combination shows maximum boiling azeotrope?
Answer» Which of the following combination shows maximum boiling azeotrope?

Discussion

37.	2. which of the following sets of compound proves law of multiple proportion? a. NH_{3,} PH_3 , AsH_3 B.NO, N_{2_{}}O_3, N_{2_{}}O_5 C. H_2O, H_2S, SO_2 D.ALL
Answer» 2. which of the following sets of compound proves law of multiple proportion? a. NH_{3,} PH_3 , AsH_3 B.NO, N_{2_{}}O_3, N_{2_{}}O_5 C. H_2O, H_2S, SO_2 D.ALL

Discussion

38.	how to identify cationic ,anionic and non ionic detergent
Answer» how to identify cationic ,anionic and non ionic detergent

Discussion

39.	The IUPAC name for
Answer» The IUPAC name for

Discussion

40.	Diazo coupling is useful to prepare:
Answer» Diazo coupling is useful to prepare:

Discussion

41.	In glyceraldehydes, sort the sequence of priority according to CIP rules.
Answer» In glyceraldehydes, sort the sequence of priority according to CIP rules.

Discussion

42.	At high temperature, van der Waal’s equation can be expressed as
Answer» At high temperature, van der Waal’s equation can be expressed as

Discussion

43.	Ionisation of energy of F− is 320 kJ mol−1. The electron gain enthalpy of fluorine would be
Answer» Ionisation of energy of $F^{-}$ is $320 {kJ mol}^{- 1}$ . The electron gain enthalpy of fluorine would be

Discussion

44.	Which of the following atom has largest size? options Ba Cs Kr S
Answer» Which of the following atom has largest size? options Ba Cs Kr S

Discussion

45.	How to calculate B.O of Sulphate ion?
Answer» How to calculate B.O of Sulphate ion?

Discussion

46.	During electrolysis of solution of brine (Concentrated solution of NaCl) chlorine gas is liberated at
Answer» During electrolysis of solution of brine (Concentrated solution of NaCl) chlorine gas is liberated at

Discussion

47.	Bromine has a melting point of −7.2 oC and a boiling point of 59 oC. At what temperature will bromine have a definite volume but no definite shape?
Answer» Bromine has a melting point of $- 7.2^{o} C$ and a boiling point of $59^{o} C$ . At what temperature will bromine have a definite volume but no definite shape?

Discussion

48.	The value of standard enthalpy of formation of SF6(g), S(g) and F(g)are−1100,275,80 kJ/mol respectively. The average bond energy of SF6 (in kJ/mol) is (Give your answer upto two decimal points)
Answer» The value of standard enthalpy of formation of $S F_{6} (g), S (g) a n d F (g) a r e - 1100, 275, 80 k J / m o l$ respectively. The average bond energy of $S F_{6}$ (in kJ/mol) is (Give your answer upto two decimal points)

Discussion

49.	Equilibrium constant for the relation12I2(g)+12Br2(g)⇌IBr(g)can be represented bylogK∘p=(277.4 K)T+0.3811Find ΔtG∘ at 298 K.
Answer» Equilibrium constant for the relation $\frac{1}{2} I_{2} (g) + \frac{1}{2} B r_{2} (g) ⇌ I B r (g)$ can be represented by $log K_{p}^{\circ} = \frac{(277.4 K)}{T} + 0.3811$ Find $Δ_{t} G^{\circ}$ at $298 K$ .

Discussion

50.	Aldol condensation will not be observed in
Answer» Aldol condensation will not be observed in

50.

Aldol condensation will not be observed in

Answer»

Aldol condensation will not be observed in

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following alkane ( having molecular weight = 86) on bromination gives only two monobromo derivatives (excluding stereoisomers) ?

We are not concerned _______ him ________ the business.

In the reaction, 2X+B2H6→[BH2(X)2]+[BH4]− the amine(s) X is/are

27. The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl(where en is ethylenediamine)is 1)7 2)8 3)9 4)6

49.which of the following combination will form most stable ionic bond?? (also explain how) a) N, O b) Li , I c) Fe, Cl d) Na , F

At 300 K, 36 g ofglucose present in a litre of its solution has an osmotic pressure of4.98 bar. If the osmotic pressure of the solution is 1.52 bars at thesame temperature, what would be its concentration?

Complete combustion of 3 g of ethane gives x ×1022 molecules of water. The value of x is _____ [Round off to the Nearest Integer]. [Use: NA=6.023×1023; Atomic masses in u : C : 12.0; O : 16.0 : H : 1.0 ]

Why Benzaldehyde not give red precipitate with fehling solution?

Ortho nitro chlorobenzene with liquid ammonia and nanh 2

Co-ordination number of body centered unit cell is taken as 8 as body centered atom touches 8 atoms but what about the corner atom. Isn't their coordination number seen?

The pH of a solution obtained by mixing 50 mL of 1 M HCl and 30 mL of 1 M NaOH is x×10−4. The value of x is ______(Nearest intger). [log2.5=0.3979]

if l=n+1 and one spin has 3electron then find the maximum no. of element that can be accomodated in first perio

one ship is sailing south with a velocity of 15\sqrt{2 }km/hr and another south - east at the rate of 15km/hr . The relative velocity of second ship with respect to the first ship is (1) 10 km/hr S-W (2) 15 km/hr S- W (3) 10 km/hr N- E (4) 15 km/hr N-

What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: 29, 59, 74, 95, 102, 104.

Which of the following will be most acidic?

Prove the following statements.a. If the angle of incidence and angle of emergence of a light ray falling on a glass slab are i and e respectively, prove that, i = e.b. A raibow is the combined effect of the refraction, dispersion, and total internal reflection of light.

Which of the following compound(s) will show geometrical isomersm?

Amongst the compounds given, the one that would form a brilliant coloured dye on treatment with NaNO2 in dilute HCl followed by addition to an alkaline solution of β−naphthol is:

How to find number of moles in 24 g nitrogen

A solution contains 0.1 M H2S and 0.3 M HCl. Given Ka1 and Ka2 for H2S are 10−7 and 1.8×10−13 respectively. If the concentration of HS− ions is x×10−8 M, then what is the value of x? (Give your answer upto two decimal points)

what is effect of increase in temperature and pressure on the following system at equilibrium N2(g)+3H2(g)NH3+HEAT

The compound which contains two P–OH and two P–H bonds is:

Arrange the following type of solid in the increasing order of melting point

Which of the following statements is not correctwhen a mixture of NaCl and K,Cr20, is gentlywarmed with conc. H,SO,(1) A deep red vapour is evolved(2) The vapour when passed into NaOH solutiongives a yellow solution of Na,CrO4(3) Chlorine gas is evolved(4) Chromyl chloride is formed

The major product formed in the reaction given below is

The product(s) obtained on reaction of HgSO4+H2SO4 with 1-butyne would be

ionic conduc†an ce of H+ and SO4-- are x and yS cm 2 mol-1 .Hence evquivalant conduc†an ce is?

How can oxidation be addition of electronegative elements (gainers of e) while oxidation is removal of e

21. Which of the following compound will not produce propene by reaction with HBr followed by elimination or direct only elimination reaction? 1) cyclopropane 2) propanol (CH3CH2CH2OH) 3) CH2=C=O 4) propyl bromide (CH3CH2CH2Br)

Do alkalis dissociate in water?

1 mole of NH3 gas at 27 oC is expanded in reversible adiabatic condition to make volume 64 times of its initial volume. (γ=43) The magnitude of work done (in cal) will be : (Give your answer in cal and upto two decimal only)

The equilibrium constant Kp for the reaction A⇌2B is related to degree of dissociation α of A and pressure P as:

Which of the following does not obey octet rule?

The binding energy per nucleon for C12 is 7.68 MeV and that for C13 is 7.47 MeV. The energy required to remove a neutron from C13 is

Which of the following combination shows maximum boiling azeotrope?

2. which of the following sets of compound proves law of multiple proportion? a. NH_{3,} PH_3 , AsH_3 B.NO, N_{2_{}}O_3, N_{2_{}}O_5 C. H_2O, H_2S, SO_2 D.ALL

how to identify cationic ,anionic and non ionic detergent

The IUPAC name for

Diazo coupling is useful to prepare:

In glyceraldehydes, sort the sequence of priority according to CIP rules.

At high temperature, van der Waal’s equation can be expressed as

Ionisation of energy of F− is 320 kJ mol−1. The electron gain enthalpy of fluorine would be

Which of the following atom has largest size? options Ba Cs Kr S

How to calculate B.O of Sulphate ion?

During electrolysis of solution of brine (Concentrated solution of NaCl) chlorine gas is liberated at

Bromine has a melting point of −7.2 oC and a boiling point of 59 oC. At what temperature will bromine have a definite volume but no definite shape?

The value of standard enthalpy of formation of SF6(g), S(g) and F(g)are−1100,275,80 kJ/mol respectively. The average bond energy of SF6 (in kJ/mol) is (Give your answer upto two decimal points)

Equilibrium constant for the relation12I2(g)+12Br2(g)⇌IBr(g)can be represented bylogK∘p=(277.4 K)T+0.3811Find ΔtG∘ at 298 K.

Aldol condensation will not be observed in

We are not concerned _ him __ the business.