46295 + Interview Questions in Chemistry

1.	Is the numerical ratio of H2O, 2:1 or 1:8As in the ch it is mentioned differently at two places
Answer» Is the numerical ratio of H2O, 2:1 or 1:8 As in the ch it is mentioned differently at two places

Discussion

2.	What is an oxidizing agent?
Answer» What is an oxidizing agent?

Discussion

3.	A calorimeter of water equivalent 20 g contains 180 g of water at 25 ∘C. m grams of steam at 100 ∘C is mixed in it till the temperature of the mixture is 31 ∘C. The value of m (in g) is close to (Latent heat of water=540 cal g−1, specific heat of water=1 cal g−1 ∘ C−1)
Answer» A calorimeter of water equivalent $20 g$ contains $180 g$ of water at $25^{\circ} C$ . $m$ grams of steam at $100^{\circ} C$ is mixed in it till the temperature of the mixture is $31^{\circ} C$ . The value of $m (in g)$ is close to $(Latent heat of water = 540 {cal g}^{- 1}$ , $specific heat of water = 1 {cal g}^{- 1}^{\circ} C^{- 1})$

Discussion

4.	26.HOW SIZE OF CATION IS RELATED WITH THE BASIC NATURE, IN CASE OF LANTHANIDES?
Answer» 26.HOW SIZE OF CATION IS RELATED WITH THE BASIC NATURE, IN CASE OF LANTHANIDES?

Discussion

5.	12 g of carbon is react with 20 g of oxygen.find the weight of co and co2
Answer» 12 g of carbon is react with 20 g of oxygen.find the weight of co and co2

Discussion

6.	A liquid solution composed of 1mole of A and 1 mole B at 300 k . Given P°A = 200 mm of hg and P°B = 300 mm of Hg 1) what is the vapour pressure of the solution2) what is the vapour pressure of solution when the first bubble of vapour forms3)what is the mole fraction of A and B in vapour phase4) what is the vapour pressure of the solution when the last drop of liquid is remaining5) what is themole fraction of A and B in last drop of liquid6) what is the mole fraction of A and B in first bubble of vapour7) if half of liquid is vapourised the what is the vapour pressure of the solution
Answer» A liquid solution composed of 1mole of A and 1 mole B at 300 k . Given P°A = 200 mm of hg and P°B = 300 mm of Hg 1) what is the vapour pressure of the solution 2) what is the vapour pressure of solution when the first bubble of vapour forms 3)what is the mole fraction of A and B in vapour phase 4) what is the vapour pressure of the solution when the last drop of liquid is remaining 5) what is themole fraction of A and B in last drop of liquid 6) what is the mole fraction of A and B in first bubble of vapour 7) if half of liquid is vapourised the what is the vapour pressure of the solution

Discussion

7.	78 Draw the structure and electron dot structure of all the possible isomers of butane and hexane.
Answer» 78 Draw the structure and electron dot structure of all the possible isomers of butane and hexane.

Discussion

8.	IP3( ionisation potential) value is maximum in A) Zn2+B) Cu2+C) Fe2+D) Ni2+
Answer» IP3( ionisation potential) value is maximum in A) Zn2+ B) Cu2+ C) Fe2+ D) Ni2+

Discussion

9.	A certain mass of hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is: (given 1 u=931 MeV)
Answer» A certain mass of hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is $0.02866 u$ . The energy liberated per $u$ is: (given $1 u = 931 MeV$ )

Discussion

10.	Which of the following ions give blue colour in the borax bead test?
Answer» Which of the following ions give blue colour in the borax bead test?

Discussion

11.	13. Liquid benzene burns in oxygen as 2c6H6+15O2=12Co2+6H20 how many litres of 02 at STP are needed to complete combustion of 39g of liquid benzene?
Answer» 13. Liquid benzene burns in oxygen as 2c6H6+15O2=12Co2+6H20 how many litres of 02 at STP are needed to complete combustion of 39g of liquid benzene?

Discussion

12.	which of the follwing statement is correct about c=o group :1)c=o length is longer than c=c bond length 2) carbon atomof crbonyl group is s2 hybridised 3)the portion of the molecular immediately surroundigthecabony groupis planar 4)the dipole moment of aldehyde ketone lie in2.3 to2.
Answer» which of the follwing statement is correct about c=o group :1)c=o length is longer than c=c bond length 2) carbon atomof crbonyl group is s2 hybridised 3)the portion of the molecular immediately surroundigthecabony groupis planar 4)the dipole moment of aldehyde ketone lie in2.3 to2.

Discussion

13.	Ortho-nitrophenol is steam volatile whereas para-nitrophenol is not. This is due to1.Intramolecular hydrogen bonding present in ortho-nitrophenol2.Intermolecular hydrogen bonding present in para-nitrophenol3.Intramolecular hydrogen bonding present in para-nitrophenol4.Inter-molecular hydrogen bonding present in ortho-nitrophenol.
Answer» Ortho-nitrophenol is steam volatile whereas para-nitrophenol is not. This is due to $1.$ Intramolecular hydrogen bonding present in ortho-nitrophenol $2.$ Intermolecular hydrogen bonding present in para-nitrophenol $3.$ Intramolecular hydrogen bonding present in para-nitrophenol $4.$ Inter-molecular hydrogen bonding present in ortho-nitrophenol.

Discussion

14.	In the following question two Statement-I (Assertion) and Statement-2 (Reason) are provided. each question has 4 choices (a), (b), (c) and (d) for its answer, out of which Only One is correct. Mark your responses from the following options:Statement-1: 2-Pentyne on hydrogenation in presence of Lindlar catalyst gives cis-1-pentene.Statement-2: Addition of hydrogen is a stereospecific reaction.
Answer» In the following question two Statement-I (Assertion) and Statement-2 (Reason) are provided. each question has 4 choices (a), (b), (c) and (d) for its answer, out of which Only One is correct. Mark your responses from the following options: Statement-1: 2-Pentyne on hydrogenation in presence of Lindlar catalyst gives cis-1-pentene. Statement-2: Addition of hydrogen is a stereospecific reaction.

Discussion

15.	By the addition of an inert gas to the systemPCI PCI +Cl, at constant volume the degreeof dissociation of PCI will(2) Decrease(1) Increase(4) Not change(3) Double
Answer» By the addition of an inert gas to the systemPCI PCI +Cl, at constant volume the degreeof dissociation of PCI will(2) Decrease(1) Increase(4) Not change(3) Double

Discussion

16.	The reaction,is thermodynamicallyfeasible as is apparent from the Gibbs energy value.Why does it not takeplace at room temperature?
Answer» The reaction, is thermodynamically feasible as is apparent from the Gibbs energy value. Why does it not take place at room temperature?

16.

The reaction,is thermodynamicallyfeasible as is apparent from the Gibbs energy value.Why does it not takeplace at room temperature?

Answer»

The reaction,

is thermodynamically
feasible as is apparent from the Gibbs energy value.

Why does it not take
place at room temperature?

Discussion

17.	Complete the table
Answer» Complete the table

Discussion

18.	What is difference between +- and -+
Answer» What is difference between +- and -+

Discussion

19.	How many of the following rearrangement forms isocyanate1.Curtius rearrangement 2.Lossen rearrangement3.Schmidt rearrangement 4.Hofmann bromamide degradation reaction
Answer» How many of the following rearrangement forms isocyanate 1.Curtius rearrangement 2.Lossen rearrangement 3.Schmidt rearrangement 4.Hofmann bromamide degradation reaction

Discussion

20.	Which of the following is a polyester fabric?
Answer» Which of the following is a polyester fabric?

Discussion

21.	The graph between logT50 and log(1a) (where T50 and a are the half - life period and the concentration respectively) for a nth order reaction is of the type:What is the value of n?
Answer» The graph between $log T_{50}$ and $log (\frac{1}{a})$ (where $T_{50}$ and a are the half - life period and the concentration respectively) for a $n^{t h}$ order reaction is of the type: What is the value of n?

Discussion

22.	A is a alcohol.
Answer» A is a alcohol.

Discussion

23.	In the reaction A(g) + 2B(g) ⇌ C(g) + Q kJ of heat, more product will be obtained or the forward reaction is favoured by
Answer» In the reaction A(g) + 2B(g) $⇌$ C(g) + Q kJ of heat, more product will be obtained or the forward reaction is favoured by

23.

In the reaction A(g) + 2B(g) ⇌ C(g) + Q kJ of heat, more product will be obtained or the forward reaction is favoured by

Answer»

In the reaction A(g) + 2B(g) $⇌$ C(g) + Q kJ of heat, more product will be obtained

or the forward reaction is favoured by

Discussion

24.	65.Arrange orthodox toluic acid (1), meta toluic acid (2) ,para toluic acid (3),benzoic acid (4) in order of decreasing acid strength
Answer» 65.Arrange orthodox toluic acid (1), meta toluic acid (2) ,para toluic acid (3),benzoic acid (4) in order of decreasing acid strength

Discussion

25.	The major product of the following reaction is:
Answer» The major product of the following reaction is:

Discussion

26.	write the reaction of anisole with ch3cl in presence of alcl
Answer» write the reaction of anisole with ch3cl in presence of alcl

Discussion

27.	Methyl cyclopentane undergoes free radical mono-bromination in the presence of light; the major product is:
Answer» Methyl cyclopentane undergoes free radical mono-bromination in the presence of light; the major product is:

Discussion

28.	The electrode potential(cu+2/cu) value for Cu is positive.wh
Answer» The electrode potential(cu+2/cu) value for Cu is positive.wh

Discussion

29.	5. CuCl or NaCl which one is more covalent &
Answer» 5. CuCl or NaCl which one is more covalent &

Discussion

30.	What is exactly meant by resolution of vectors?Also tell formulas used to resolve a vector.
Answer» What is exactly meant by resolution of vectors?Also tell formulas used to resolve a vector.

Discussion

31.	explain the 4th and 5th state of matter in detail
Answer» explain the 4th and 5th state of matter in detail

Discussion

32.	The metal that crystallises in CCP is Rb Cs Ag Zn
Answer» The metal that crystallises in CCP is Rb Cs Ag Zn

32.

The metal that crystallises in CCP is Rb Cs Ag Zn

Answer»

The metal that crystallises in CCP is

Rb

Cs

Ag

Zn

Discussion

33.	calculate molarity of 30%(w/w) naoh solution if density of solution is gibven to be 1.05g/cc
Answer» calculate molarity of 30%(w/w) naoh solution if density of solution is gibven to be 1.05g/cc

Discussion

34.	The osmotic pressure at 17∘C of an aqeuous solution containing 1.75 g of sucrose per 150 mL solution is
Answer» The osmotic pressure at $17^{\circ} C$ of an aqeuous solution containing $1.75 g$ of sucrose per $150 m L$ solution is

Discussion

35.	Which of the following species is paramagnetic in nature?
Answer» Which of the following species is paramagnetic in nature?

Discussion

36.	The least polar among the following is
Answer» The least polar among the following is

Discussion

37.	How many stereoisomer of product (P) is possible ?
Answer» How many stereoisomer of product (P) is possible ?

Discussion

38.	Calculatethe mass of a non-volatile solute (molar mass 40 g mol−1)which should be dissolved in 114 g octane to reduce its vapourpressure to 80%.
Answer» Calculate the mass of a non-volatile solute (molar mass 40 g mol⁻¹) which should be dissolved in 114 g octane to reduce its vapour pressure to 80%.

Discussion

39.	Which of the following is with highest and lowest floculation value among Al3+, Na+, Mg2+, Ba2+. 1) Al3+, Na+ 2)Na+, Al3
Answer» Which of the following is with highest and lowest floculation value among Al3+, Na+, Mg2+, Ba2+. 1) Al3+, Na+ 2)Na+, Al3

Discussion

40.	Achild running a temperature of101°F is given an antipyrin (i.e. a medicine that lowers fever)which causes an increase in the rate of evaporation of sweat from hisbody. If the fever is brought down to 98 °F in 20 min, what isthe average rate of extra evaporation caused, by the drug? Assume theevaporation mechanism to be the only way by which heat is lost. Themass of the child is 30 kg. The specific heat of human body isapproximately the same as that of water, and latent heat ofevaporation of water at that temperature is about 580 cal g–1.
Answer» A child running a temperature of 101°F is given an antipyrin (i.e. a medicine that lowers fever) which causes an increase in the rate of evaporation of sweat from his body. If the fever is brought down to 98 °F in 20 min, what is the average rate of extra evaporation caused, by the drug? Assume the evaporation mechanism to be the only way by which heat is lost. The mass of the child is 30 kg. The specific heat of human body is approximately the same as that of water, and latent heat of evaporation of water at that temperature is about 580 cal g^–1.

Discussion

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

Discussion

42.	25 mL of household bleach solution was mixed with mL of 0.50 M Kl and 10 mL of 4 N acetic acid. In the titration of the liberated iodine, 48 mL of 4 mL of 0.25 N Na2S2O3 was used to reach the end point. The molarity of the household bleach solution is
Answer» 25 mL of household bleach solution was mixed with mL of 0.50 M Kl and 10 mL of 4 N acetic acid. In the titration of the liberated iodine, 48 mL of 4 mL of 0.25 N $N a_{2} S_{2} O_{3}$ was used to reach the end point. The molarity of the household bleach solution is

Discussion

43.	At 250 C, the highest osmotic pressure is exhibited by 0.1 M solution of
Answer» At 25⁰ C, the highest osmotic pressure is exhibited by 0.1 M solution of

Discussion

44.	{6 mole of an ideal gas expand isothermally and }}{ reversibly from a volume of }1 litre to a volume of }}{10 lites at }27^° C . The maximum work done is }}{ (1) }47kJ}{ (2) }100kJ}{ (3) }0}{ (4) }34.46kJ
Answer» {6 mole of an ideal gas expand isothermally and }}{ reversibly from a volume of }1 litre to a volume of }}{10 lites at }27^° C . The maximum work done is }}{ (1) }47kJ}{ (2) }100kJ}{ (3) }0}{ (4) }34.46kJ

Discussion

45.	What is homolysis of chlorine?
Answer» What is homolysis of chlorine?

Discussion

46.	About 'X' and 'Y' the correct statements are I. 'X' is inorganic acid 'Y' on oxidation with acidified KMnO4 gives organic acid II. In 'X' central atom exhibit sp3 and in 'Y' 1st and 2nd carbon exhibit sp2 and sp3 hybridisations III. Both 'X' and 'Y' acts as reducing agents IV. Both 'X' and 'Y' are oxidized products in the reaction
Answer» About 'X' and 'Y' the correct statements are I. 'X' is inorganic acid 'Y' on oxidation with acidified KMnO₄ gives organic acid II. In 'X' central atom exhibit sp³ and in 'Y' 1^st and 2^nd carbon exhibit sp² and sp³ hybridisations III. Both 'X' and 'Y' acts as reducing agents IV. Both 'X' and 'Y' are oxidized products in the reaction

46.

About 'X' and 'Y' the correct statements are I. 'X' is inorganic acid 'Y' on oxidation with acidified KMnO4 gives organic acid II. In 'X' central atom exhibit sp3 and in 'Y' 1st and 2nd carbon exhibit sp2 and sp3 hybridisations III. Both 'X' and 'Y' acts as reducing agents IV. Both 'X' and 'Y' are oxidized products in the reaction

Answer»

About 'X' and 'Y' the correct statements are

I. 'X' is inorganic acid 'Y' on oxidation with acidified KMnO₄ gives organic acid

II. In 'X' central atom exhibit sp³ and in 'Y' 1^st and 2^nd carbon exhibit sp² and sp³ hybridisations

III. Both 'X' and 'Y' acts as reducing agents

IV. Both 'X' and 'Y' are oxidized products in the reaction

Discussion

47.	The structural formula of monomer of polymethylmethacrylate (PMMA) is
Answer» The structural formula of monomer of polymethylmethacrylate (PMMA) is

Discussion

48.	Energy is being emitted from the surface of a black body at 127∘ C temperature at the rate of 1.0×106J/sec−m2. Temperature of the black body at which the rate of energy emission is 16.0×106J/sec−m2 will be
Answer» Energy is being emitted from the surface of a black body at $127^{\circ}$ C temperature at the rate of $1.0 \times 10^{6} J / s e c - m^{2}$ . Temperature of the black body at which the rate of energy emission is $16.0 \times 10^{6} J / s e c - m^{2}$ will be

Discussion

49.	Why did Albert Einstein got noble prize?
Answer» Why did Albert Einstein got noble prize?

Discussion

50.	12.Three liquids with masses M1,M2 and M3 are thoroughly mixed.If their specific heats are S1,S2 and S3 and initial temperatures are T1,T2 and T3 respectively,then the equilibrium temperature of the mixture is 1) M1T1+M2T2+M3T3S1T1+S2T2+S3T3 2) M1S1+M2S2+M3S3÷ S1T1+S2T2+S3T3 3) M1S1T1+M2S2T2+M3S3T3÷ M1S1+M2S2+M2S3 4) M1S1T1+M2S2T2+M3S3T3÷ M1T1+M2T2+M3T3
Answer» 12.Three liquids with masses M1,M2 and M3 are thoroughly mixed.If their specific heats are S1,S2 and S3 and initial temperatures are T1,T2 and T3 respectively,then the equilibrium temperature of the mixture is 1) M1T1+M2T2+M3T3S1T1+S2T2+S3T3 2) M1S1+M2S2+M3S3÷ S1T1+S2T2+S3T3 3) M1S1T1+M2S2T2+M3S3T3÷ M1S1+M2S2+M2S3 4) M1S1T1+M2S2T2+M3S3T3÷ M1T1+M2T2+M3T3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Is the numerical ratio of H2O, 2:1 or 1:8As in the ch it is mentioned differently at two places

What is an oxidizing agent?

A calorimeter of water equivalent 20 g contains 180 g of water at 25 ∘C. m grams of steam at 100 ∘C is mixed in it till the temperature of the mixture is 31 ∘C. The value of m (in g) is close to (Latent heat of water=540 cal g−1, specific heat of water=1 cal g−1 ∘ C−1)

26.HOW SIZE OF CATION IS RELATED WITH THE BASIC NATURE, IN CASE OF LANTHANIDES?

12 g of carbon is react with 20 g of oxygen.find the weight of co and co2

78 Draw the structure and electron dot structure of all the possible isomers of butane and hexane.

IP3( ionisation potential) value is maximum in A) Zn2+B) Cu2+C) Fe2+D) Ni2+

A certain mass of hydrogen is changed to Helium by the process of fusion. The mass defect in fusion reaction is 0.02866 u. The energy liberated per u is: (given 1 u=931 MeV)

Which of the following ions give blue colour in the borax bead test?

13. Liquid benzene burns in oxygen as 2c6H6+15O2=12Co2+6H20 how many litres of 02 at STP are needed to complete combustion of 39g of liquid benzene?

which of the follwing statement is correct about c=o group :1)c=o length is longer than c=c bond length 2) carbon atomof crbonyl group is s2 hybridised 3)the portion of the molecular immediately surroundigthecabony groupis planar 4)the dipole moment of aldehyde ketone lie in2.3 to2.

By the addition of an inert gas to the systemPCI PCI +Cl, at constant volume the degreeof dissociation of PCI will(2) Decrease(1) Increase(4) Not change(3) Double

The reaction,is thermodynamicallyfeasible as is apparent from the Gibbs energy value.Why does it not takeplace at room temperature?

Complete the table

What is difference between +- and -+

How many of the following rearrangement forms isocyanate1.Curtius rearrangement 2.Lossen rearrangement3.Schmidt rearrangement 4.Hofmann bromamide degradation reaction

Which of the following is a polyester fabric?

The graph between logT50 and log(1a) (where T50 and a are the half - life period and the concentration respectively) for a nth order reaction is of the type:What is the value of n?

A is a alcohol.

In the reaction A(g) + 2B(g) ⇌ C(g) + Q kJ of heat, more product will be obtained or the forward reaction is favoured by

65.Arrange orthodox toluic acid (1), meta toluic acid (2) ,para toluic acid (3),benzoic acid (4) in order of decreasing acid strength

The major product of the following reaction is:

write the reaction of anisole with ch3cl in presence of alcl

Methyl cyclopentane undergoes free radical mono-bromination in the presence of light; the major product is:

The electrode potential(cu+2/cu) value for Cu is positive.wh

5. CuCl or NaCl which one is more covalent &

What is exactly meant by resolution of vectors?Also tell formulas used to resolve a vector.

explain the 4th and 5th state of matter in detail

The metal that crystallises in CCP is Rb Cs Ag Zn

calculate molarity of 30%(w/w) naoh solution if density of solution is gibven to be 1.05g/cc

The osmotic pressure at 17∘C of an aqeuous solution containing 1.75 g of sucrose per 150 mL solution is

Which of the following species is paramagnetic in nature?

The least polar among the following is

How many stereoisomer of product (P) is possible ?

Calculatethe mass of a non-volatile solute (molar mass 40 g mol−1)which should be dissolved in 114 g octane to reduce its vapourpressure to 80%.

Which of the following is with highest and lowest floculation value among Al3+, Na+, Mg2+, Ba2+. 1) Al3+, Na+ 2)Na+, Al3

Which of the following hydrides has the least boiling point?

25 mL of household bleach solution was mixed with mL of 0.50 M Kl and 10 mL of 4 N acetic acid. In the titration of the liberated iodine, 48 mL of 4 mL of 0.25 N Na2S2O3 was used to reach the end point. The molarity of the household bleach solution is

At 250 C, the highest osmotic pressure is exhibited by 0.1 M solution of

{6 mole of an ideal gas expand isothermally and }}{ reversibly from a volume of }1 litre to a volume of }}{10 lites at }27^° C . The maximum work done is }}{ (1) }47kJ}{ (2) }100kJ}{ (3) }0}{ (4) }34.46kJ

What is homolysis of chlorine?

The structural formula of monomer of polymethylmethacrylate (PMMA) is

Energy is being emitted from the surface of a black body at 127∘ C temperature at the rate of 1.0×106J/sec−m2. Temperature of the black body at which the rate of energy emission is 16.0×106J/sec−m2 will be

Why did Albert Einstein got noble prize?