46295 + Interview Questions in Chemistry

1.	Match the following order of the reactions with their half-life periods
Answer» Match the following order of the reactions with their half-life periods

Discussion

2.	Question 05 Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon......... (a) temperature (b) nature of solute (c) pressure (d) nature of solvent
Answer» Question 05 Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon......... (a) temperature (b) nature of solute (c) pressure (d) nature of solvent

Discussion

3.	Which of the following compound(s) are stable in their ionic structure?
Answer» Which of the following compound(s) are stable in their ionic structure?

Discussion

4.	Which one of the following is the weakest base in gaseous phase?
Answer» Which one of the following is the weakest base in gaseous phase?

Discussion

5.	Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the following statement is incorrect from this reaction
Answer» Excess of KI reacts with $C u S O_{4}$ solution and then $N a_{2} S_{2} O_{3}$ solution is added to it. Which of the following statement is incorrect from this reaction

Discussion

6.	A light source of 320 Watt emit monochromatic light of wavelength 6200 ∘A. If all the emitted photons are made to strike on the metal plate of work function equal to 1.8 eV and quantum yield is 25% then photocurrent observed in ampere will be:
Answer» A light source of 320 Watt emit monochromatic light of wavelength $6200 \circ A$ . If all the emitted photons are made to strike on the metal plate of work function equal to 1.8 eV and quantum yield is 25% then photocurrent observed in ampere will be:

Discussion

7.	At the isoelectric point for an amino acid, the species present are:
Answer» At the isoelectric point for an amino acid, the species present are:

Discussion

8.	The srength of H2O2 is expressed in several ways like molarity, normality, %(w/V), volume strength, etc. The strength of 10 V means 1 volume of H2O2 on decomposition gives 10 volumes of oxygen at 1 atm and 273 K or 1 litre of H2O2 gives 10 litre of O2 at 1 atm and 273 K. The decomposition of H2O2 is shown as under: H2O2(aq)→H2O(l)+12O2(g) H2O2 can acts as oxidising as well as reducing agent, as oxidisng agent H2O2 converted into H2O and as reducing agent H2O2 converted into O2, both cases n-factor is 2. ∴,Normality of H2O2Solution=2×Molarity of H2O2 Solution What is the percentage strength of 11.2 V H2O2?
Answer» The srength of $H_{2} O_{2}$ is expressed in several ways like molarity, normality, %(w/V), volume strength, etc. The strength of $10 V$ means 1 volume of $H_{2} O_{2}$ on decomposition gives 10 volumes of oxygen at 1 atm and $273 K$ or 1 litre of $H_{2} O_{2}$ gives $10 l i t r e$ of $O_{2}$ at 1 atm and $273 K$ . The decomposition of $H_{2} O_{2}$ is shown as under: $H_{2} O_{2} (a q) \to H_{2} O (l) + \frac{1}{2} O_{2} (g)$ $H_{2} O_{2}$ can acts as oxidising as well as reducing agent, as oxidisng agent $H_{2} O_{2}$ converted into $H_{2} O$ and as reducing agent $H_{2} O_{2}$ converted into $O_{2}$ , both cases n-factor is $2$ . $∴, Normality of H_{2} O_{2} Solution = 2 \times Molarity of H_{2} O_{2} Solution$ What is the percentage strength of $11.2 V H_{2} O_{2}$ ?

Discussion

9.	If K1,K2 and K3 are equilibrium constant for formation of AD,AD2 and AD3 respectively as follow A+D⇌AD,AD+D⇌AD2,AD2+D⇌AD3 then equilibrium constant 'K" for A+3D⇌AD3 is related as
Answer» If $K_{1}, K_{2} a n d K_{3}$ are equilibrium constant for formation of $A D, A D_{2} a n d A D_{3}$ respectively as follow $A + D ⇌ A D, A D + D ⇌ A D_{2}, A D_{2} + D ⇌ A D_{3}$ then equilibrium constant 'K" for $A + 3 D ⇌ A D_{3}$ is related as

Discussion

10.	The compounds that will give an isomer of 2,2-dimethyl propane on catalytic hydrogenation are
Answer» The compounds that will give an isomer of 2,2-dimethyl propane on catalytic hydrogenation are

Discussion

11.	Generally transition elements and their salts are colored due to the presence of unpaired electrons in metal ions. Which of the following compounds are colored?
Answer» Generally transition elements and their salts are colored due to the presence of unpaired electrons in metal ions. Which of the following compounds are colored?

Discussion

12.	Write the name and structure of one of the common initiators used in free radical addition polymerization.
Answer» Write the name and structure of one of the common initiators used in free radical addition polymerization.

Discussion

13.	Match Column-I with Column-II: Column-IColumn-IIa. [Ni(CN)4]2−p. d2sp3b.[Ni(CO)4]q. sp3d2c. [Co(en)3]3+r. dsp2d. [Co(Br)3Cl3]3−s. sp3t. Inner orbital complex u. Outer orbital complex
Answer» Match Column-I with Column-II: $\begin{matrix} Column-I & Column-II a. {[N i (C N)_{4}]}_{4}^{2 -} & p. d^{2} s p^{3} b. [N i (C O)_{4}] & q. s p^{3} d^{2} c. {[C o (e n)_{3}]}_{3}^{3 +} & r. d s p^{2} d. {[C o (B r)_{3} C l_{3}]}_{3}^{3 -} & s. s p^{3} t. Inner orbital complex u. Outer orbital complex \end{matrix}$

Discussion

14.	Explain salts of oxo-acids in detail?
Answer» Explain salts of oxo-acids in detail?

Discussion

15.	What is impurity defects?
Answer» What is impurity defects?

Discussion

16.	What is the exact difference between heating and burning?
Answer» What is the exact difference between heating and burning?

Discussion

17.	the number of spokes is immaterial because emf induced in them is parallel, how is the emf induced in them parallel?
Answer» the number of spokes is immaterial because emf induced in them is parallel, how is the emf induced in them parallel?

Discussion

18.	The vapour pressure of a liquid depends upon:
Answer» The vapour pressure of a liquid depends upon:

Discussion

19.	Na can react with air vigorously and burn immediately. So how can we perform reactions practically that we are taught those including sodium
Answer» Na can react with air vigorously and burn immediately. So how can we perform reactions practically that we are taught those including sodium

Discussion

20.	A Carnot engine is operated between 2 resovoirs at temperature 177°C and 77°C. If the engine recieves 4200J of heat energy from the source in each cycle, calculate the amount of heat rejected to the sink in each cycle. Calculate the efficiency of engine.
Answer» A Carnot engine is operated between 2 resovoirs at temperature 177°C and 77°C. If the engine recieves 4200J of heat energy from the source in each cycle, calculate the amount of heat rejected to the sink in each cycle. Calculate the efficiency of engine.

Discussion

21.	The reversible expansion of an ideal gas under adiabatic and isothermal condition is shown in the figure. Which of the following statements is incorrect?
Answer» The reversible expansion of an ideal gas under adiabatic and isothermal condition is shown in the figure. Which of the following statements is incorrect?

Discussion

22.	Which of the chapter we have to start from physica,l organic and inorganic chemistry from byju's class 11 course?
Answer» Which of the chapter we have to start from physica,l organic and inorganic chemistry from byju's class 11 course?

Discussion

23.	(a) How will you convert the following : (i) Propanone to Propan-2-ol (ii) Ethanal to 2-hydroxy propanoic acid (iii) Toluene to benzoic acid (b) Give simple chemical test to distinguish between : (i) Pentan-2-one and Pentan-3-one (ii) Ethanal and Propanal
Answer» (a) How will you convert the following : (i) Propanone to Propan-2-ol (ii) Ethanal to 2-hydroxy propanoic acid (iii) Toluene to benzoic acid (b) Give simple chemical test to distinguish between : (i) Pentan-2-one and Pentan-3-one (ii) Ethanal and Propanal

Discussion

24.	In chain propagation of chlorination of alkanes, the chlorine free radical attacks methane to generate
Answer» In chain propagation of chlorination of alkanes, the chlorine free radical attacks methane to generate

Discussion

25.	Which molecule will act as both bronsted acid and base?
Answer» Which molecule will act as both bronsted acid and base?

Discussion

26.	The following graph is plotted as time on the x - axis and concentration of A on the y - axis. Identify A.
Answer» The following graph is plotted as time on the x - axis and concentration of A on the y - axis. Identify A.

26.

The following graph is plotted as time on the x - axis and concentration of A on the y - axis. Identify A.

Answer»

The following graph is plotted as time on the x - axis and concentration of A on the y - axis. Identify A.

Discussion

27.	Fallout [1]Nagasaki suffered from thefallout of nuclear radiation.[2]People believed that the politicalfallout of the scandal would be insignificant [3]Who can predict the environmental fallout of the WTO agreements? [4]The headmaster could not understandthe fallout of several of his good students at the public examination.
Answer» Fallout $\begin{matrix} [1] & Nagasaki suffered from the fallout of nuclear radiation. [2] & People believed that the political fallout of the scandal would be insignificant [3] & Who can predict the environmental fallout of the WTO agreements? [4] & The headmaster could not understand the fallout of several of his good students at the public examination. \end{matrix}$

Discussion

28.	Which of the following is the major product of following reaction? CH3CH = CH2 + HI
Answer» Which of the following is the major product of following reaction? CH₃CH = CH₂ + HI

Discussion

29.	When sodium is oxidized it forms:
Answer» When sodium is oxidized it forms:

Discussion

30.	Maximum pKb value is of
Answer» Maximum $p K_{b}$ value is of

Discussion

31.	A first order reaction in aqueous solution was too fast to be detected by a procedure that could have followed a reaction having a half life of at least 2.0ns. The minimum value of the rate constant of the reaction is
Answer» A first order reaction in aqueous solution was too fast to be detected by a procedure that could have followed a reaction having a half life of at least 2.0ns. The minimum value of the rate constant of the reaction is

Discussion

32.	Which of the following is the correct structure for staggered conformation of n-propane?
Answer» Which of the following is the correct structure for staggered conformation of n-propane?

Discussion

33.	The phenomenon of optical activity will be shown by which of the following complexes?
Answer» The phenomenon of optical activity will be shown by which of the following complexes?

Discussion

34.	Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii ? (Numbers in the parenthesis are atomic numbers).
Answer» Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii ? (Numbers in the parenthesis are atomic numbers).

Discussion

35.	A solid compound ‘X’ on heating gives CO2 gas and a residue. The residue is then mixed with water to form ‘Y’. On passing an excess amount of CO2 through ‘Y’ in water, a clear solution ‘Z’ is observed. On boiling ‘Z’, compound ‘X’ is formed. Compound ‘X’ is:
Answer» A solid compound ‘X’ on heating gives $C O_{2}$ gas and a residue. The residue is then mixed with water to form ‘Y’. On passing an excess amount of $C O_{2}$ through ‘Y’ in water, a clear solution ‘Z’ is observed. On boiling ‘Z’, compound ‘X’ is formed. Compound ‘X’ is:

Discussion

36.	How can we convert CsCl structure into NaCl structure and vice versa?
Answer» How can we convert CsCl structure into NaCl structure and vice versa?

Discussion

37.	Normality of 1% (wt/vol) H2SO4 is
Answer» Normality of 1% (wt/vol) H2SO4 is

Discussion

38.	A cylinder containing an ideal gas (0.1 mol of 1.0 dm3 ) is in thermal equilibrium with a large volume of 0.5 molal aqueous solution of ethylene glycol at it freezing point. If the stoppers S1 and S2 (as shown in the figure) suddenly withdrawn, the volume of the gas in liters after equilibrium is achieved will be(Given, Kf(water)=2.0 K kg mol–1 ,R=0.08 dm3atm K–1mol–1)
Answer» A cylinder containing an ideal gas (0.1 mol of 1.0 $d m^{3}$ ) is in thermal equilibrium with a large volume of 0.5 molal aqueous solution of ethylene glycol at it freezing point. If the stoppers $S_{1}$ and $S_{2}$ (as shown in the figure) suddenly withdrawn, the volume of the gas in liters after equilibrium is achieved will be(Given, $K_{f} (water) = 2.0 {K kg mol}^{- 1}$ , $R = 0.08 {dm}^{3} {atm K}^{- 1} {mol}^{- 1})$

Discussion

39.	The bicyclic and heterocyclic compound among the following
Answer» The bicyclic and heterocyclic compound among the following

Discussion

40.	How will you distinguish between the following pair of terms : (i) hexagonal close-packing and cubic close-packing? (ii) crystal lattice and unit cell ? (iii) tetrahedral void and octahedral void?
Answer» How will you distinguish between the following pair of terms : (i) hexagonal close-packing and cubic close-packing? (ii) crystal lattice and unit cell ? (iii) tetrahedral void and octahedral void?

40.

How will you distinguish between the following pair of terms : (i) hexagonal close-packing and cubic close-packing? (ii) crystal lattice and unit cell ? (iii) tetrahedral void and octahedral void?

Answer»

How will you distinguish between the following pair of terms :

(i) hexagonal close-packing and cubic close-packing?

(ii) crystal lattice and unit cell ?

(iii) tetrahedral void and octahedral void?

Discussion

41.	Ethanol is an alternative source of energy. Explain.
Answer» Ethanol is an alternative source of energy. Explain.

Discussion

42.	Diborane reacts with ammonia under different condition to give a variety of products. Which of the following are formed in these conditions.
Answer» Diborane reacts with ammonia under different condition to give a variety of products. Which of the following are formed in these conditions.

Discussion

43.	The rate of a certain biochemical reaction at physiological temperature (T) occurs 106 times faster with enzyme than without. The change in activation energy upon adding enzyme is:
Answer» The rate of a certain biochemical reaction at physiological temperature (T) occurs $10^{6}$ times faster with enzyme than without. The change in activation energy upon adding enzyme is:

Discussion

44.	It is thought that atoms combine with each other such that the outermost orbit acquires a stable configuration of 8 electrons. If stability were attained with 6 electrons rather than with 8, what would be the formula of the stable fluoride ions?
Answer» It is thought that atoms combine with each other such that the outermost orbit acquires a stable configuration of 8 electrons. If stability were attained with 6 electrons rather than with 8, what would be the formula of the stable fluoride ions?

Discussion

45.	The ratio of Kp to Kc for the equilibrium CO(g)+12O2(g)⇌CO2(g) is
Answer» The ratio of $K_{p}$ to $K_{c}$ for the equilibrium $C O (g) + \frac{1}{2} O_{2} (g) ⇌ C O_{2} (g)$ is

Discussion

46.	Question 46 Group the following as linear and non-linear molecules. H2O, HOCl, BeCl2, Cl2O
Answer» Question 46 Group the following as linear and non-linear molecules. $H_{2} O, H O C l, B e C l_{2}, C l_{2} O$

46.

Question 46 Group the following as linear and non-linear molecules. H2O, HOCl, BeCl2, Cl2O

Answer»

Question 46

Group the following as linear and non-linear molecules.

$H_{2} O, H O C l, B e C l_{2}, C l_{2} O$

Discussion

47.	Which of the following is not an oxidation-reduction reaction?
Answer» Which of the following is not an oxidation-reduction reaction?

Discussion

48.	The chemical reactions involved in the ammonia soda process are represented as follows: 2NaCl+CaCO3→Na2CO3+CaCl2 In the following reactions, CaCO3Δ−→[A]+[B] NaCl+NH3+[B]+H2O→[C]+[D] 2[C]→Na2CO3+H2O+[B] Identify A to D:
Answer» The chemical reactions involved in the ammonia soda process are represented as follows: $2 N a C l + C a C O_{3} \to N a_{2} C O_{3} + C a C l_{2}$ In the following reactions, $C a C O_{3} Δ - \to [A] + [B]$ $N a C l + N H_{3} + [B] + H_{2} O \to [C] + [D]$ $2 [C] \to N a_{2} C O_{3} + H_{2} O + [B]$ Identify A to D:

Discussion

49.	What is Swartz reaction?
Answer» What is Swartz reaction?

Discussion

50.	If the radius of the first Bohr orbit is r, the wavelength of an electron in the 4th orbit of a hydrogen atom is equal to:
Answer» If the radius of the first Bohr orbit is r, the wavelength of an electron in the 4th orbit of a hydrogen atom is equal to:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Match the following order of the reactions with their half-life periods

Question 05 Maximum amount of a solid solute that can be dissolved in a specified amount of a given liquid solvent does not depend upon......... (a) temperature (b) nature of solute (c) pressure (d) nature of solvent

Which of the following compound(s) are stable in their ionic structure?

Which one of the following is the weakest base in gaseous phase?

Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the following statement is incorrect from this reaction

A light source of 320 Watt emit monochromatic light of wavelength 6200 ∘A. If all the emitted photons are made to strike on the metal plate of work function equal to 1.8 eV and quantum yield is 25% then photocurrent observed in ampere will be:

At the isoelectric point for an amino acid, the species present are:

If K1,K2 and K3 are equilibrium constant for formation of AD,AD2 and AD3 respectively as follow A+D⇌AD,AD+D⇌AD2,AD2+D⇌AD3 then equilibrium constant 'K" for A+3D⇌AD3 is related as

The compounds that will give an isomer of 2,2-dimethyl propane on catalytic hydrogenation are

Generally transition elements and their salts are colored due to the presence of unpaired electrons in metal ions. Which of the following compounds are colored?

Write the name and structure of one of the common initiators used in free radical addition polymerization.

Match Column-I with Column-II: Column-IColumn-IIa. [Ni(CN)4]2−p. d2sp3b.[Ni(CO)4]q. sp3d2c. [Co(en)3]3+r. dsp2d. [Co(Br)3Cl3]3−s. sp3t. Inner orbital complex u. Outer orbital complex

Explain salts of oxo-acids in detail?

What is impurity defects?

What is the exact difference between heating and burning?

the number of spokes is immaterial because emf induced in them is parallel, how is the emf induced in them parallel?

The vapour pressure of a liquid depends upon:

Na can react with air vigorously and burn immediately. So how can we perform reactions practically that we are taught those including sodium

A Carnot engine is operated between 2 resovoirs at temperature 177°C and 77°C. If the engine recieves 4200J of heat energy from the source in each cycle, calculate the amount of heat rejected to the sink in each cycle. Calculate the efficiency of engine.

The reversible expansion of an ideal gas under adiabatic and isothermal condition is shown in the figure. Which of the following statements is incorrect?

Which of the chapter we have to start from physica,l organic and inorganic chemistry from byju's class 11 course?

(a) How will you convert the following : (i) Propanone to Propan-2-ol (ii) Ethanal to 2-hydroxy propanoic acid (iii) Toluene to benzoic acid (b) Give simple chemical test to distinguish between : (i) Pentan-2-one and Pentan-3-one (ii) Ethanal and Propanal

In chain propagation of chlorination of alkanes, the chlorine free radical attacks methane to generate

Which molecule will act as both bronsted acid and base?

The following graph is plotted as time on the x - axis and concentration of A on the y - axis. Identify A.

Which of the following is the major product of following reaction? CH3CH = CH2 + HI

When sodium is oxidized it forms:

Maximum pKb value is of

A first order reaction in aqueous solution was too fast to be detected by a procedure that could have followed a reaction having a half life of at least 2.0ns. The minimum value of the rate constant of the reaction is

Which of the following is the correct structure for staggered conformation of n-propane?

The phenomenon of optical activity will be shown by which of the following complexes?

Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii ? (Numbers in the parenthesis are atomic numbers).

A solid compound ‘X’ on heating gives CO2 gas and a residue. The residue is then mixed with water to form ‘Y’. On passing an excess amount of CO2 through ‘Y’ in water, a clear solution ‘Z’ is observed. On boiling ‘Z’, compound ‘X’ is formed. Compound ‘X’ is:

How can we convert CsCl structure into NaCl structure and vice versa?

Normality of 1% (wt/vol) H2SO4 is

The bicyclic and heterocyclic compound among the following

How will you distinguish between the following pair of terms : (i) hexagonal close-packing and cubic close-packing? (ii) crystal lattice and unit cell ? (iii) tetrahedral void and octahedral void?

Ethanol is an alternative source of energy. Explain.

Diborane reacts with ammonia under different condition to give a variety of products. Which of the following are formed in these conditions.

The rate of a certain biochemical reaction at physiological temperature (T) occurs 106 times faster with enzyme than without. The change in activation energy upon adding enzyme is:

It is thought that atoms combine with each other such that the outermost orbit acquires a stable configuration of 8 electrons. If stability were attained with 6 electrons rather than with 8, what would be the formula of the stable fluoride ions?

The ratio of Kp to Kc for the equilibrium CO(g)+12O2(g)⇌CO2(g) is

Question 46 Group the following as linear and non-linear molecules. H2O, HOCl, BeCl2, Cl2O

Which of the following is not an oxidation-reduction reaction?

The chemical reactions involved in the ammonia soda process are represented as follows: 2NaCl+CaCO3→Na2CO3+CaCl2 In the following reactions, CaCO3Δ−→[A]+[B] NaCl+NH3+[B]+H2O→[C]+[D] 2[C]→Na2CO3+H2O+[B] Identify A to D:

What is Swartz reaction?

If the radius of the first Bohr orbit is r, the wavelength of an electron in the 4th orbit of a hydrogen atom is equal to: