46295 + Interview Questions in Chemistry

1.	In an adsorption experiment, a graph between log(x/m) versus log p was found to be linear with a slope of 1.0. The intercept on the log axis was found to be 0.3010. what will be the amount of gas adsorbed per gram of charcoal under a pressure of 0.5 atmosphere.
Answer» In an adsorption experiment, a graph between log(x/m) versus log p was found to be linear with a slope of $1.0$ . The intercept on the log axis was found to be $0.3010.$ what will be the amount of gas adsorbed per gram of charcoal under a pressure of $0.5$ atmosphere.

Discussion

2.	Which of the following crystalline solids have highest melting point?
Answer» Which of the following crystalline solids have highest melting point?

Discussion

3.	The ionization constant of a weak electrolyte is 25×10−6 while the equivalent conductance of its 0.01 M solution is 19.6 S cm2 eq−1. The equivalent conductance of the electrolyte at infinite dilution (in S cm2 eq−1) will be
Answer» The ionization constant of a weak electrolyte is $25 \times 10^{- 6}$ while the equivalent conductance of its $0.01 M$ solution is $19.6 S c m^{2} e q^{- 1}$ . The equivalent conductance of the electrolyte at infinite dilution (in $S c m^{2} e q^{- 1}$ ) will be

Discussion

4.	The nuclear mass density is of the order of
Answer» The nuclear mass density is of the order of

Discussion

5.	Antibiotics used in syphilis
Answer» Antibiotics used in syphilis

Discussion

6.	The bond enthalpies of H2,X2 an HX are in the ratio of 2 : 1 : 2. If enthalpy of formation of HX is −50 kJ mol−1, the bond enthalpy of X2 is
Answer» The bond enthalpies of $H_{2}, X_{2}$ an HX are in the ratio of 2 : 1 : 2. If enthalpy of formation of HX is $- 50 k J m o l^{- 1}$ , the bond enthalpy of $X_{2}$ is

Discussion

7.	Total number of atom(s) purely present in a hexagonal close packing unit cell which are not shared by adjacent unit cell is/areOptions:A)1B)2C)3D)6
Answer» Total number of atom(s) purely present in a hexagonal close packing unit cell which are not shared by adjacent unit cell is/are Options: A)1 B)2 C)3 D)6

Discussion

8.	Predict the products in the given reaction.
Answer» Predict the products in the given reaction.

Discussion

9.	A+CCl4+KOH→Salicylic acid′A′ in above reaction is
Answer» $A + C C l_{4} + K O H \to Salicylic acid$ $^{'} A^{'}$ in above reaction is

Discussion

10.	6. at 88degree celsius benzene has a vapour pressure of 900 torr and toluene has a vapour pressure of 360 torr what s the mole fraction of benzene in the mixture of toluene that will boil at 88degree celsius at 1atm pressure benzene - toluene form an ideal solution.
Answer» 6. at 88degree celsius benzene has a vapour pressure of 900 torr and toluene has a vapour pressure of 360 torr what s the mole fraction of benzene in the mixture of toluene that will boil at 88degree celsius at 1atm pressure benzene - toluene form an ideal solution.

Discussion

11.	The following equilibria are givenN 2 +3H 2 ⇌2NH 3 ,K 1 N 2 +O 2 ⇌2NO,K 2 H 2 + 21 O 2 ⇌H 2 O,K 3 The equilibrium constant of the reaction, in terms of K 1 ,K 2 and K 3 is:2NH 3 + 25 O 2 ⇌2NO+3H 2 O
Answer» The following equilibria are given N 2 +3H 2 ⇌2NH 3 ,K 1 N 2 +O 2 ⇌2NO,K 2 H 2 + 2 1 O 2 ⇌H 2 O,K 3 The equilibrium constant of the reaction, in terms of K 1 ,K 2 and K 3 is: 2NH 3 + 2 5 O 2 ⇌2NO+3H 2 O

Discussion

12.	Does the composition of proteins, fats and calcium carbonate changes with different types of eggs( brown eggs, white eggs and duck eggs)? If yes how?
Answer» Does the composition of proteins, fats and calcium carbonate changes with different types of eggs( brown eggs, white eggs and duck eggs)? If yes how?

Discussion

13.	14. Is odd electron counted in hybridisation like in free radicals or in NO2 type of species??
Answer» 14. Is odd electron counted in hybridisation like in free radicals or in NO2 type of species??

Discussion

14.	3. For a radioactive reaction ,90% of the reaction completes in 10 years . What will be the half life
Answer» 3. For a radioactive reaction ,90% of the reaction completes in 10 years . What will be the half life

Discussion

15.	What is the Oxidation number of K and I in KI3 ?
Answer» What is the Oxidation number of K and I in KI3 ?

Discussion

16.	Which of the following point is not true about enthalpy of atomization regarding transition metals?
Answer» Which of the following point is not true about enthalpy of atomization regarding transition metals?

Discussion

17.	Effect of temperature and pressure on crystal structure
Answer» Effect of temperature and pressure on crystal structure

Discussion

18.	In electrophilic aromatic substitution reaction, benzene ring attacks the E+ (electrophile) to generate the intermediate σ−complex. Which of the following σ-complex has lowest energy?
Answer» In electrophilic aromatic substitution reaction, benzene ring attacks the $E^{+}$ (electrophile) to generate the intermediate $σ - complex.$ Which of the following $σ$ -complex has lowest energy?

Discussion

19.	What is a balanced chemical equations ?
Answer» What is a balanced chemical equations ?

Discussion

20.	Given that:C(graphite)+ O2(g)→CO2(g), ΔH=x kJ mol−1C(graphite)+ 12O2(g)→CO(g), ΔH=y kJ mol−1CO(g)+ 12O2(g)→CO2(g), ΔH=z kJ mol−1Based on the given thermochemical equations, find out which one of the following algebric relationships is correct?
Answer» Given that: $C (g r a p h i t e) + O_{2} (g) \to C O_{2} (g), Δ H = x k J m o l^{- 1}$ $C (g r a p h i t e) + \frac{1}{2} O_{2} (g) \to C O (g), Δ H = y k J m o l^{- 1}$ $C O (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g), Δ H = z k J m o l^{- 1}$ Based on the given thermochemical equations, find out which one of the following algebric relationships is correct?

Discussion

21.	With the help of schematic diagram, explain the chain reaction , due to fission of uranium nuclei?
Answer» With the help of schematic diagram, explain the chain reaction , due to fission of uranium nuclei?

Discussion

22.	Glucose reacts with acetic anhydride to form:
Answer» Glucose reacts with acetic anhydride to form:

Discussion

23.	Whenever a photom is emitted by hydrogen in Balmer series, it is followed by another photon in Lyman series. What wavwlength does this latter photon correspond to ?
Answer» Whenever a photom is emitted by hydrogen in Balmer series, it is followed by another photon in Lyman series. What wavwlength does this latter photon correspond to ?

Discussion

24.	Arrange the following compounds in increasing order of their property as indicated : Acetaldehyde, acetone, di-tert-butyl ketone, methyl torl-butyl ketone (reactivity towards HCN). CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH, CH3CH2CH2COOH{(acid strength)} Benzoic acid, 4 - nitrobenzoic acid, 3, 4 - dinitro benzoic acid, 4 - methoxy benzoic acid (acid strength).
Answer» Arrange the following compounds in increasing order of their property as indicated : Acetaldehyde, acetone, di-tert-butyl ketone, methyl torl-butyl ketone (reactivity towards HCN). $C H_{3} C H_{2} C H (B r) C O O H, C H_{3} C H (B r) C H_{2} C O O H, (C H_{3})_{2} C H C O O H, C H_{3} C H_{2} C H_{2} C O O H {(a c i d s t r e n g t h)}$ Benzoic acid, 4 - nitrobenzoic acid, 3, 4 - dinitro benzoic acid, 4 - methoxy benzoic acid (acid strength).

24.

Arrange the following compounds in increasing order of their property as indicated : Acetaldehyde, acetone, di-tert-butyl ketone, methyl torl-butyl ketone (reactivity towards HCN). CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH, (CH3)2CHCOOH, CH3CH2CH2COOH{(acid strength)} Benzoic acid, 4 - nitrobenzoic acid, 3, 4 - dinitro benzoic acid, 4 - methoxy benzoic acid (acid strength).

Answer»

Arrange the following compounds in increasing order of their property as indicated :

Acetaldehyde, acetone, di-tert-butyl ketone, methyl torl-butyl ketone (reactivity towards HCN).

$C H_{3} C H_{2} C H (B r) C O O H, C H_{3} C H (B r) C H_{2} C O O H, (C H_{3})_{2} C H C O O H, C H_{3} C H_{2} C H_{2} C O O H {(a c i d s t r e n g t h)}$

Benzoic acid, 4 - nitrobenzoic acid, 3, 4 - dinitro benzoic acid, 4 - methoxy benzoic acid (acid strength).

Discussion

25.	16.find the percentage of ionic character of HCl givent that observed dipole moment is 1.30D and bond lenghth is 1.275 Angstrom
Answer» 16.find the percentage of ionic character of HCl givent that observed dipole moment is 1.30D and bond lenghth is 1.275 Angstrom

Discussion

26.	For a given reaction, ΔH=35.5 kJ mol−1 and ΔS=83.6J K−1mol−1. The reaction is spontaneous at (Assume that ΔH and ΔS do not vary with temperature.)
Answer» For a given reaction, $Δ H = 35.5 k J m o l^{- 1} a n d Δ S = 83.6 J K^{- 1} m o l^{- 1}$ . The reaction is spontaneous at (Assume that $Δ H a n d Δ S$ do not vary with temperature.)

Discussion

27.	Define metallurgy.
Answer» Define metallurgy.

Discussion

28.	The correct order of electron affinity of B, C, N, O is
Answer» The correct order of electron affinity of B, C, N, O is

28.

The correct order of electron affinity of B, C, N, O is

Answer»

The correct order of electron affinity of B, C, N, O is

Discussion

29.	The author would agree with which of the following statements regarding Wittgenstein?
Answer» The author would agree with which of the following statements regarding Wittgenstein?

Discussion

30.	Butyric acid contains only C, H and O. A 4.24 mg sample of butyric acid is completely burned. It gves 8.45 mg of carbon dioxide (CO2) and 3.46 mg of water. What is the mass percentage of C, H and O in butyric acid respectively?
Answer» Butyric acid contains only C, H and O. A 4.24 mg sample of butyric acid is completely burned. It gves 8.45 mg of carbon dioxide $(C O_{2})$ and 3.46 mg of water. What is the mass percentage of C, H and O in butyric acid respectively?

Discussion

31.	Metaphosphoric acid has the formula
Answer» Metaphosphoric acid has the formula

Discussion

32.	Select a suitable pronoun for the blank. Most of my fellow classmates ______ lived in my locality have settled abroad.
Answer» Select a suitable pronoun for the blank. Most of my fellow classmates ______ lived in my locality have settled abroad.

32.

Select a suitable pronoun for the blank. Most of my fellow classmates ______ lived in my locality have settled abroad.

Answer»

Select a suitable pronoun for the blank.

Most of my fellow classmates ______ lived in my locality have settled abroad.

Discussion

33.	ntFeSO4 on heating givesn nt(1) SO2 and SO3n nt(2) SO2 onlyn nt(3) SO3 onlyn nt(4) SO2 and O2n
Answer» ntFeSO4 on heating givesn nt(1) SO2 and SO3n nt(2) SO2 onlyn nt(3) SO3 onlyn nt(4) SO2 and O2n

Discussion

34.	Which of the following is/are correct order of solubility in water?
Answer» Which of the following is/are correct order of solubility in water?

Discussion

35.	There are 576 boys and 448 girls in a school that are to be divided into equal sections of either boys or girls alone. Find the total number of sections thus formed.
Answer» There are 576 boys and 448 girls in a school that are to be divided into equal sections of either boys or girls alone. Find the total number of sections thus formed.

Discussion

36.	Which of the following is used for measuring the mass of costly substances such as gold, silver, diamonds?
Answer» Which of the following is used for measuring the mass of costly substances such as gold, silver, diamonds?

Discussion

37.	CH4 BF3 NH3 BeCl2Increasing order of bond angle ?Explain the reason.
Answer» CH4 BF3 NH3 BeCl2 Increasing order of bond angle ? Explain the reason.

Discussion

38.	Is there any formula to find number of resonating structures or any easy/fast method to find number of resonating structures?Regards
Answer» Is there any formula to find number of resonating structures or any easy/fast method to find number of resonating structures? Regards

Discussion

39.	100 3.2 moles of HI(g) were heated in a sealed bulb at 444degree Celsius till the equilibrium is reached. It's degree of dissociation is 20% calculate the no of moles of hydrogen, iodide, hydrogen iodide Present at the equilibrium point and determine the value of equilibrium constant for the reaction. Considering the volume of the container 1L
Answer» 100 3.2 moles of HI(g) were heated in a sealed bulb at 444degree Celsius till the equilibrium is reached. It's degree of dissociation is 20% calculate the no of moles of hydrogen, iodide, hydrogen iodide Present at the equilibrium point and determine the value of equilibrium constant for the reaction. Considering the volume of the container 1L

Discussion

40.	In an experiment, 100 ml of ozonised oxygen was reduced to 60 ml when treated with turpentine. What would be the increase in volume if the original sample was heated until no further change occured ?(All volumes were measured under identical conditions). ?
Answer» In an experiment, 100 ml of ozonised oxygen was reduced to 60 ml when treated with turpentine. What would be the increase in volume if the original sample was heated until no further change occured ?(All volumes were measured under identical conditions). ?

Discussion

41.	48. What is the density of 32 N sulphuric acid solution having 90% (w W/ ) strength ? (a) 1.74 g/L (b) 17.4 g/L (c) 1.74g/mL (d) 17.4 g/mL
Answer» 48. What is the density of 32 N sulphuric acid solution having 90% (w W/ ) strength ? (a) 1.74 g/L (b) 17.4 g/L (c) 1.74g/mL (d) 17.4 g/mL

Discussion

42.	There are 2 hybridization type sp3d and dsp3 . Please tell me what is the difference and why are they both differently studied?
Answer» There are 2 hybridization type sp3d and dsp3 . Please tell me what is the difference and why are they both differently studied?

42.

There are 2 hybridization type sp3d and dsp3 . Please tell me what is the difference and why are they both differently studied?

Answer»

There are 2 hybridization type sp3d and dsp3 .

Please tell me what is the difference and why are they both differently studied?

Discussion

43.	What is vector law
Answer» What is vector law

Discussion

44.	Why carbon is called thermodynamically stable form of carbon
Answer» Why carbon is called thermodynamically stable form of carbon

Discussion

45.	An ionic compound AB has rock salt structure with anions B- forming FCC space lattice. Assuming anion-anion contact, the vacant space in the unit cell is about:
Answer» An ionic compound AB has rock salt structure with anions B- forming FCC space lattice. Assuming anion-anion contact, the vacant space in the unit cell is about:

Discussion

46.	In K4[Fe(CN)6], Fe is in the form of
Answer» In $K_{4} [F e (C N)_{6}]$ , Fe is in the form of

Discussion

47.	Q. Arrange the following species in the increasing order of their Ionic radius ( with reasons ) : C^4+, S^2-, Cl^1-,K^1+, Ca^2+, Al^3+, Mg^2+, O^2-,F^1-
Answer» Q. Arrange the following species in the increasing order of their Ionic radius ( with reasons ) : C^4+, S^2-, Cl^1-,K^1+, Ca^2+, Al^3+, Mg^2+, O^2-,F^1-

Discussion

48.	12g of metal reacts with oxygen to give 20g of metal oxide. What will be the valency of metal if vapour density is 12??
Answer» 12g of metal reacts with oxygen to give 20g of metal oxide. What will be the valency of metal if vapour density is 12??

Discussion

49.	In any sub shell the max m number of electrons having same value of spin quantum number is?? why?
Answer» In any sub shell the max m number of electrons having same value of spin quantum number is?? why?

Discussion

50.	At 127∘C ,a compound that exists in a liquid state has a vapour pressure of 380 torr . The same compound has a vapour pressure of 1.5 atm at 227∘C.Calculate the enthalpy of vapourisation (ΔHvap) for the compound.
Answer» At $127^{\circ} C$ ,a compound that exists in a liquid state has a vapour pressure of $380 t o r r$ . The same compound has a vapour pressure of $1.5 a t m$ at $227^{\circ} C$ . Calculate the enthalpy of vapourisation $(Δ H_{v a p})$ for the compound.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In an adsorption experiment, a graph between log(x/m) versus log p was found to be linear with a slope of 1.0. The intercept on the log axis was found to be 0.3010. what will be the amount of gas adsorbed per gram of charcoal under a pressure of 0.5 atmosphere.

Which of the following crystalline solids have highest melting point?

The ionization constant of a weak electrolyte is 25×10−6 while the equivalent conductance of its 0.01 M solution is 19.6 S cm2 eq−1. The equivalent conductance of the electrolyte at infinite dilution (in S cm2 eq−1) will be

The nuclear mass density is of the order of

Antibiotics used in syphilis

The bond enthalpies of H2,X2 an HX are in the ratio of 2 : 1 : 2. If enthalpy of formation of HX is −50 kJ mol−1, the bond enthalpy of X2 is

Total number of atom(s) purely present in a hexagonal close packing unit cell which are not shared by adjacent unit cell is/areOptions:A)1B)2C)3D)6

Predict the products in the given reaction.

A+CCl4+KOH→Salicylic acid′A′ in above reaction is

6. at 88degree celsius benzene has a vapour pressure of 900 torr and toluene has a vapour pressure of 360 torr what s the mole fraction of benzene in the mixture of toluene that will boil at 88degree celsius at 1atm pressure benzene - toluene form an ideal solution.

The following equilibria are givenN 2​ +3H 2​ ⇌2NH 3​ ,K 1​ N 2​ +O 2​ ⇌2NO,K 2​ H 2​ + 21​ O 2​ ⇌H 2​ O,K 3​ The equilibrium constant of the reaction, in terms of K 1​ ,K 2​ and K 3​ is:2NH 3​ + 25​ O 2​ ⇌2NO+3H 2​ O

Does the composition of proteins, fats and calcium carbonate changes with different types of eggs( brown eggs, white eggs and duck eggs)? If yes how?

14. Is odd electron counted in hybridisation like in free radicals or in NO2 type of species??

3. For a radioactive reaction ,90% of the reaction completes in 10 years . What will be the half life

What is the Oxidation number of K and I in KI3 ?

Which of the following point is not true about enthalpy of atomization regarding transition metals?

Effect of temperature and pressure on crystal structure

In electrophilic aromatic substitution reaction, benzene ring attacks the E+ (electrophile) to generate the intermediate σ−complex. Which of the following σ-complex has lowest energy?

What is a balanced chemical equations ?

Given that:C(graphite)+ O2(g)→CO2(g), ΔH=x kJ mol−1C(graphite)+ 12O2(g)→CO(g), ΔH=y kJ mol−1CO(g)+ 12O2(g)→CO2(g), ΔH=z kJ mol−1Based on the given thermochemical equations, find out which one of the following algebric relationships is correct?

With the help of schematic diagram, explain the chain reaction , due to fission of uranium nuclei?

Glucose reacts with acetic anhydride to form:

Whenever a photom is emitted by hydrogen in Balmer series, it is followed by another photon in Lyman series. What wavwlength does this latter photon correspond to ?

16.find the percentage of ionic character of HCl givent that observed dipole moment is 1.30D and bond lenghth is 1.275 Angstrom

For a given reaction, ΔH=35.5 kJ mol−1 and ΔS=83.6J K−1mol−1. The reaction is spontaneous at (Assume that ΔH and ΔS do not vary with temperature.)

Define metallurgy.

The correct order of electron affinity of B, C, N, O is

The author would agree with which of the following statements regarding Wittgenstein?

Butyric acid contains only C, H and O. A 4.24 mg sample of butyric acid is completely burned. It gves 8.45 mg of carbon dioxide (CO2) and 3.46 mg of water. What is the mass percentage of C, H and O in butyric acid respectively?

Metaphosphoric acid has the formula

Select a suitable pronoun for the blank. Most of my fellow classmates ______ lived in my locality have settled abroad.

ntFeSO4 on heating givesn nt(1) SO2 and SO3n nt(2) SO2 onlyn nt(3) SO3 onlyn nt(4) SO2 and O2n

Which of the following is/are correct order of solubility in water?

There are 576 boys and 448 girls in a school that are to be divided into equal sections of either boys or girls alone. Find the total number of sections thus formed.

Which of the following is used for measuring the mass of costly substances such as gold, silver, diamonds?

CH4 BF3 NH3 BeCl2Increasing order of bond angle ?Explain the reason.

Is there any formula to find number of resonating structures or any easy/fast method to find number of resonating structures?Regards

In an experiment, 100 ml of ozonised oxygen was reduced to 60 ml when treated with turpentine. What would be the increase in volume if the original sample was heated until no further change occured ?(All volumes were measured under identical conditions). ?

48. What is the density of 32 N sulphuric acid solution having 90% (w W/ ) strength ? (a) 1.74 g/L (b) 17.4 g/L (c) 1.74g/mL (d) 17.4 g/mL

There are 2 hybridization type sp3d and dsp3 . Please tell me what is the difference and why are they both differently studied?

What is vector law

Why carbon is called thermodynamically stable form of carbon

An ionic compound AB has rock salt structure with anions B- forming FCC space lattice. Assuming anion-anion contact, the vacant space in the unit cell is about:

In K4[Fe(CN)6], Fe is in the form of

Q. Arrange the following species in the increasing order of their Ionic radius ( with reasons ) : C^4+, S^2-, Cl^1-,K^1+, Ca^2+, Al^3+, Mg^2+, O^2-,F^1-

12g of metal reacts with oxygen to give 20g of metal oxide. What will be the valency of metal if vapour density is 12??

In any sub shell the max m number of electrons having same value of spin quantum number is?? why?

At 127∘C ,a compound that exists in a liquid state has a vapour pressure of 380 torr . The same compound has a vapour pressure of 1.5 atm at 227∘C.Calculate the enthalpy of vapourisation (ΔHvap) for the compound.

The following equilibria are givenN 2 +3H 2 ⇌2NH 3 ,K 1 N 2 +O 2 ⇌2NO,K 2 H 2 + 21 O 2 ⇌H 2 O,K 3 The equilibrium constant of the reaction, in terms of K 1 ,K 2 and K 3 is:2NH 3 + 25 O 2 ⇌2NO+3H 2 O