46295 + Interview Questions in Chemistry

1.	The following data was obtained during the first order thermal decomposition of SO2Cl2 at a constant volume: SO2Cl2(g)→SO2(g)+Cl2(g) ExperimentTime/s−1Total pressure/atm100.421000.7 Calculate the rate constant. (Given:log 4=0.602, log 3=0.477)
Answer» The following data was obtained during the first order thermal decomposition of $S O_{2} C l_{2}$ at a constant volume: $S O_{2} C l_{2} (g) \to S O_{2} (g) + C l_{2} (g)$ $\begin{matrix} Experiment & Time / s^{- 1} & Total pressure/atm 1 & 0 & 0.4 2 & 100 & 0.7 \end{matrix}$ Calculate the rate constant. (Given:log 4=0.602, log 3=0.477)

Discussion

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

Discussion

3.	Which one of the following trihalide does not exist?
Answer» Which one of the following trihalide does not exist?

Discussion

4.	The weight of a mixture containing HCl and H2SO4 is 0.1 g. On treatment with an excess of an AgNO3 solution, the acid mixture gives 0.1435 g of AgCl. Weight percentage of the H2SO4 in the mixture is: (Molecular mass of H, Cl, S, O, Ag, N are 1 u, 35.5 u, 32 u, 16 u 108 u,and 14 u)
Answer» The weight of a mixture containing $H C l$ and $H_{2} S O_{4}$ is $0.1 g$ . On treatment with an excess of an $A g N O_{3}$ solution, the acid mixture gives $0.1435 g$ of $A g C l$ . Weight percentage of the $H_{2} S O_{4}$ in the mixture is: (Molecular mass of $H, C l, S, O, A g, N$ are $1 u, 35.5 u, 32 u, 16 u 108 u, and 14 u$ )

Discussion

5.	Total number of electrons present in a super oxide anion is
Answer» Total number of electrons present in a super oxide anion is

Discussion

6.	What are the basic constituent particles forming diamond crystals?
Answer» What are the basic constituent particles forming diamond crystals?

Discussion

7.	What volume of 0.50 M CaCl2 solution is needed to prepare 250 mL of solution that has a chloride concentration of 0.100 M?
Answer» What volume of 0.50 M $C a C l_{2}$ solution is needed to prepare 250 mL of solution that has a chloride concentration of 0.100 M?

Discussion

8.	Which of the following is aprotic nonpolar solvent?
Answer» Which of the following is aprotic nonpolar solvent?

Discussion

9.	Which starting material should be used to produce the compound shown below?
Answer» Which starting material should be used to produce the compound shown below?

Discussion

10.	Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is:
Answer» Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is:

Discussion

11.	Calculate the number of NO2 molecules in 4 moles of a pure sample of NO2 molecules.
Answer» Calculate the number of $N O_{2}$ molecules in 4 moles of a pure sample of $N O_{2}$ molecules.

Discussion

12.	Solubility product constant (Ksp) of salts of types MX,MX2 and M3X at temperature 'T' are 4.0×10−8,3.2×10−14 and 2.7×10−15 respectively. The solubilities (mol/dm^3) of the salts at temperature 'T' are in the order:
Answer» Solubility product constant $(K_{s p})$ of salts of types $M X, M X_{2}$ and $M_{3} X$ at temperature 'T' are $4.0 \times 10^{- 8}, 3.2 \times 10^{- 14}$ and $2.7 \times 10^{- 15}$ respectively. The solubilities $(mol/dm^3)$ of the salts at temperature 'T' are in the order:

Discussion

13.	(I) Chlorobenzene (II) 2,4−dinitrochlorobenzene (III) p−nitrochlorobenzene The decreasing order of their reactivities towards electrophilic substitution reaction is:
Answer» $(I) C h l o r o b e n z e n e$ $(I I) 2, 4 - d i n i t r o c h l o r o b e n z e n e$ $(I I I) p - n i t r o c h l o r o b e n z e n e$ The decreasing order of their reactivities towards electrophilic substitution reaction is:

Discussion

14.	Indicator range of phenolphthalein is:
Answer» Indicator range of phenolphthalein is:

Discussion

15.	Among the properties (i) reducing (ii) Oxidizing (iii) Complexing, the set of properties shown by CN ion towards metal species is
Answer» Among the properties (i) reducing (ii) Oxidizing (iii) Complexing, the set of properties shown by CN ion towards metal species is

Discussion

16.	The temperature of the gas is raised from 27∘ C to 927∘ C, the root mean square velocity is
Answer» The temperature of the gas is raised from 27 $^{\circ}$ C to 927 $^{\circ}$ C, the root mean square velocity is

16.

The temperature of the gas is raised from 27∘ C to 927∘ C, the root mean square velocity is

Answer»

The temperature of the gas is raised from 27 $^{\circ}$ C to 927 $^{\circ}$ C, the root mean square velocity is

Discussion

17.	Which one of the following ions exhibits d-d transition and paramagnetism as well?
Answer» Which one of the following ions exhibits d-d transition and paramagnetism as well?

Discussion

18.	In the cyclic process shown in P-V diagram, the magnitude of the work done is
Answer» In the cyclic process shown in P-V diagram, the magnitude of the work done is

Discussion

19.	In which of the following acid, which acid has oxidation reduction and complex formation properties
Answer» In which of the following acid, which acid has oxidation reduction and complex formation properties

19.

In which of the following acid, which acid has oxidation reduction and complex formation properties

Answer»

In which of the following acid, which acid has oxidation reduction and complex formation properties

Discussion

20.	In CsCl structure, the coordination number of Cs+ is[MP PMT 2001]
Answer» In CsCl structure, the coordination number of Cs⁺ is [MP PMT 2001]

20.

In CsCl structure, the coordination number of Cs+ is[MP PMT 2001]

Answer»

In CsCl structure, the coordination number of Cs⁺ is

[MP PMT 2001]

Discussion

21.	If you are given a 4 m NaOH solution having density 2 g/mL, then find the molarity of the solution.
Answer» If you are given a $4 m$ $N a O H$ solution having density $2 g/mL$ , then find the molarity of the solution.

Discussion

22.	Among the following, the most stable complex is:
Answer» Among the following, the most stable complex is:

Discussion

23.	At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with increase in temperature due to
Answer» At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with increase in temperature due to

23.

At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with increase in temperature due to

Answer»

At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with increase in temperature due to

Discussion

24.	The major product formed in the reaction is:
Answer» The major product formed in the reaction is:

Discussion

25.	Chlorocyclohexane reacts with NaCN in ethanol to give cyanocyclohexane. What happens when a small amount (catalytic) of iodide - I− is added to the solution?
Answer» Chlorocyclohexane reacts with $N a C N$ in ethanol to give cyanocyclohexane. What happens when a small amount (catalytic) of iodide - $I^{-}$ is added to the solution?

Discussion

26.	Column of Hg of mass 10.2g is in a tube of uniform area of cross section 0.1sq.cm. Calculate the length of the column.( Density of Hg=13.6g/cc )
Answer» Column of Hg of mass 10.2g is in a tube of uniform area of cross section 0.1sq.cm. Calculate the length of the column.( Density of Hg=13.6g/cc )

Discussion

27.	Which of the following does not have any coordinate bond?
Answer» Which of the following does not have any coordinate bond?

Discussion

28.	Element Fe has two oxidation states Fe2+ & Fe3+, the correct order of radii of these ions will be:
Answer» Element $F e$ has two oxidation states $F e^{2 +}$ & $F e^{3 +}$ , the correct order of radii of these ions will be:

Discussion

29.	Which of the following could be considered to be oxidation?
Answer» Which of the following could be considered to be oxidation?

Discussion

30.	Which one of the following acids would you expect to be the strongest ?
Answer» Which one of the following acids would you expect to be the strongest ?

Discussion

31.	1.0 g atom of an α − emitting isotope (t1/2=10 days) is sealed in a container. The volume of the gas accumulated in the container at STP after 10 days would be:
Answer» $1.0 g$ atom of an $α$ − emitting isotope $(t_{1 / 2} = 10 days)$ is sealed in a container. The volume of the gas accumulated in the container at STP after 10 days would be:

Discussion

32.	Salts of the metals Li, Na, K and Rb, when introduced into flame, give the following characteristic colour of flame
Answer» Salts of the metals Li, Na, K and Rb, when introduced into flame, give the following characteristic colour of flame

Discussion

33.	Can : CH3 CH(C2H5) CH(C2H5) CH3 Be written as : CH3 (CH(C2H5))2 CH3
Answer» Can : CH₃CH(C₂H₅) CH(C₂H₅) CH₃ Be written as : CH₃(CH(C₂H₅))₂CH₃

33.

Can : CH3 CH(C2H5) CH(C2H5) CH3 Be written as : CH3 (CH(C2H5))2 CH3

Answer»

Can : CH₃CH(C₂H₅) CH(C₂H₅) CH₃

Be written as : CH₃(CH(C₂H₅))₂CH₃

Discussion

34.	In H2−O2 fuel cell the reaction occuring at cathode is:
Answer» In $H_{2} - O_{2}$ fuel cell the reaction occuring at cathode is:

Discussion

35.	The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of
Answer» The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of

Discussion

36.	The dipole moments of o, p and m - dichlorobenzene will be in the order:
Answer» The dipole moments of $o, p$ and m - dichlorobenzene will be in the order:

Discussion

37.	Four moles of an ideal gas at 27∘ C is allowed to expand isothermally from an initial pressure of 12.0 atm to a final pressure of 6.0 atm against a constant external pressure of 1.0 atm. Thus, work done will be
Answer» Four moles of an ideal gas at $27^{\circ} C$ is allowed to expand isothermally from an initial pressure of $12.0 atm$ to a final pressure of $6.0 atm$ against a constant external pressure of $1.0 atm$ . Thus, work done will be

Discussion

38.	How can we light a bulb with a potato?
Answer» How can we light a bulb with a potato?

Discussion

39.	An organic compound contains 20% carbon, 6.7% hydrogen, and 46.67% nitrogen. Its molecular weight was found to be 60. Find the molecular formula of the compound.
Answer» An organic compound contains 20% carbon, 6.7% hydrogen, and 46.67% nitrogen. Its molecular weight was found to be 60. Find the molecular formula of the compound.

Discussion

40.	The % yield of ammonia as a function of time in the reaction : N(g)+3H2(g)⇌2NH3(g), ΔH<0 at (P,T1) is given below. If this reaction is conducted at (P,T2), with T2>T1, the % yield of ammonia as a function of time is represented by:
Answer» The % yield of ammonia as a function of time in the reaction : $N (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g), Δ H < 0$ at $(P, T_{1})$ is given below. If this reaction is conducted at $(P, T_{2})$ , with $T_{2} > T_{1}$ , the % yield of ammonia as a function of time is represented by:

Discussion

41.	What is the difference between boiling and evaporation?
Answer» What is the difference between boiling and evaporation?

Discussion

42.	Which metal exhibits more than one oxidation states in their compounds.
Answer» Which metal exhibits more than one oxidation states in their compounds.

Discussion

43.	Write the reactions of D-glucose which can't be explained by its open chain structure. How can cyclic structure of glucose explain these reactions?
Answer» Write the reactions of D-glucose which can't be explained by its open chain structure. How can cyclic structure of glucose explain these reactions?

Discussion

44.	What is the total number of sigma and pi bonds in the following molecules? (a) C2H2 (b) C2H4
Answer» What is the total number of sigma and pi bonds in the following molecules? (a) $C_{2} H_{2}$ (b) $C_{2} H_{4}$

44.

What is the total number of sigma and pi bonds in the following molecules? (a) C2H2 (b) C2H4

Answer»

What is the total number of sigma and pi bonds in the following molecules?

(a) $C_{2} H_{2}$ (b) $C_{2} H_{4}$

Discussion

45.	Identify the functional groups in the following compounds a) b) c)
Answer» Identify the functional groups in the following compounds a) b) c)

45.

Identify the functional groups in the following compounds a) b) c)

Answer»

Identify the functional groups in the following compounds

a)

b)

c)

Discussion

46.	Value of spin only magnetic moment for one of the following configuration is 2.84 bm.
Answer» Value of spin only magnetic moment for one of the following configuration is 2.84 bm.

Discussion

47.	Using IUPAC norms write the formulae for the following: (a) Tris (ethane - 1, 2 - diamine) chromium (III) chloride (b) Potassium tetrahydroxozincate (II)
Answer» Using IUPAC norms write the formulae for the following: (a) Tris (ethane - 1, 2 - diamine) chromium (III) chloride (b) Potassium tetrahydroxozincate (II)

Discussion

48.	Calculate emf of the following cell at 25∘C: Sn\|Sn2+(0.001M)\|\|H+(0.01M)\|H2 (g)(1 bar)\|Pt(s) E0Sn2+/Sn=−0.14 V E0H+/H2=0.00 V
Answer» Calculate emf of the following cell at $25^{\circ} C$ : $S n \| S n^{2 +} (0.001 M) \| \| H^{+} (0.01 M) \| H_{2}$ (g)(1 bar)\|Pt(s) $E_{S n^{2 +} / S n}^{0} = - 0.14 V E_{H + / H_{2}}^{0} = 0.00 V$

Discussion

49.	Match the electronic configurations of the elements given in List - I with their correct characteristic(s) (i.e., properties for given configuration) given in List - II. List-IList - IIP.1s21.Element shows highest negative oxidation stateQ.1s2 2s2 2p52.Element shows highest first ionisation enthalpyR.1s2 2s2 2p6 3s2 3p53.Element shows highest electronegativity on Pauling scaleS.1s2 2s2 2p24.Element shows maximum electron gain enthalpy (most exothermic)
Answer» Match the electronic configurations of the elements given in List - I with their correct characteristic(s) (i.e., properties for given configuration) given in List - II. $\begin{matrix} List-I & List - II P. & 1 s^{2} & 1. & Element shows highest negative oxidation state Q. & 1 s^{2} 2 s^{2} 2 p^{5} & 2. & Element shows highest first ionisation enthalpy R. & 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{5} & 3. & Element shows highest electronegativity on Pauling scale S. & 1 s^{2} 2 s^{2} 2 p^{2} & 4. & Element shows maximum electron gain enthalpy (most exothermic) \end{matrix}$

Discussion

50.	In Wurtz reaction of alkyl halides with sodium the reactivity order of these halides is:
Answer» In Wurtz reaction of alkyl halides with sodium the reactivity order of these halides is:

50.

In Wurtz reaction of alkyl halides with sodium the reactivity order of these halides is:

Answer»

In Wurtz reaction of alkyl halides with sodium the reactivity order of these halides is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The following data was obtained during the first order thermal decomposition of SO2Cl2 at a constant volume: SO2Cl2(g)→SO2(g)+Cl2(g) ExperimentTime/s−1Total pressure/atm100.421000.7 Calculate the rate constant. (Given:log 4=0.602, log 3=0.477)

Which of the following species is paramagnetic in nature

Which one of the following trihalide does not exist?

The weight of a mixture containing HCl and H2SO4 is 0.1 g. On treatment with an excess of an AgNO3 solution, the acid mixture gives 0.1435 g of AgCl. Weight percentage of the H2SO4 in the mixture is: (Molecular mass of H, Cl, S, O, Ag, N are 1 u, 35.5 u, 32 u, 16 u 108 u,and 14 u)

Total number of electrons present in a super oxide anion is

What are the basic constituent particles forming diamond crystals?

What volume of 0.50 M CaCl2 solution is needed to prepare 250 mL of solution that has a chloride concentration of 0.100 M?

Which of the following is aprotic nonpolar solvent?

Which starting material should be used to produce the compound shown below?

Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is:

Calculate the number of NO2 molecules in 4 moles of a pure sample of NO2 molecules.

Solubility product constant (Ksp) of salts of types MX,MX2 and M3X at temperature 'T' are 4.0×10−8,3.2×10−14 and 2.7×10−15 respectively. The solubilities (mol/dm^3) of the salts at temperature 'T' are in the order:

(I) Chlorobenzene (II) 2,4−dinitrochlorobenzene (III) p−nitrochlorobenzene The decreasing order of their reactivities towards electrophilic substitution reaction is:

Indicator range of phenolphthalein is:

Among the properties (i) reducing (ii) Oxidizing (iii) Complexing, the set of properties shown by CN ion towards metal species is

The temperature of the gas is raised from 27∘ C to 927∘ C, the root mean square velocity is

Which one of the following ions exhibits d-d transition and paramagnetism as well?

In the cyclic process shown in P-V diagram, the magnitude of the work done is

In which of the following acid, which acid has oxidation reduction and complex formation properties

In CsCl structure, the coordination number of Cs+ is[MP PMT 2001]

If you are given a 4 m NaOH solution having density 2 g/mL, then find the molarity of the solution.

Among the following, the most stable complex is:

At constant volume, for a fixed number of moles of a gas, the pressure of the gas increases with increase in temperature due to

The major product formed in the reaction is:

Chlorocyclohexane reacts with NaCN in ethanol to give cyanocyclohexane. What happens when a small amount (catalytic) of iodide - I− is added to the solution?

Column of Hg of mass 10.2g is in a tube of uniform area of cross section 0.1sq.cm. Calculate the length of the column.( Density of Hg=13.6g/cc )

Which of the following does not have any coordinate bond?

Element Fe has two oxidation states Fe2+ &amp; Fe3+, the correct order of radii of these ions will be:

Which of the following could be considered to be oxidation?

Which one of the following acids would you expect to be the strongest ?

1.0 g atom of an α − emitting isotope (t1/2=10 days) is sealed in a container. The volume of the gas accumulated in the container at STP after 10 days would be:

Salts of the metals Li, Na, K and Rb, when introduced into flame, give the following characteristic colour of flame

Can : CH3 CH(C2H5) CH(C2H5) CH3 Be written as : CH3 (CH(C2H5))2 CH3

In H2−O2 fuel cell the reaction occuring at cathode is:

The ratio of the dimensions of Planck constant and that of moment of inertia has the dimensions of

The dipole moments of o, p and m - dichlorobenzene will be in the order:

Four moles of an ideal gas at 27∘ C is allowed to expand isothermally from an initial pressure of 12.0 atm to a final pressure of 6.0 atm against a constant external pressure of 1.0 atm. Thus, work done will be

How can we light a bulb with a potato?

An organic compound contains 20% carbon, 6.7% hydrogen, and 46.67% nitrogen. Its molecular weight was found to be 60. Find the molecular formula of the compound.

The % yield of ammonia as a function of time in the reaction : N(g)+3H2(g)⇌2NH3(g), ΔH&lt;0 at (P,T1) is given below. If this reaction is conducted at (P,T2), with T2&gt;T1, the % yield of ammonia as a function of time is represented by:

What is the difference between boiling and evaporation?

Which metal exhibits more than one oxidation states in their compounds.

Write the reactions of D-glucose which can't be explained by its open chain structure. How can cyclic structure of glucose explain these reactions?

What is the total number of sigma and pi bonds in the following molecules? (a) C2H2 (b) C2H4

Identify the functional groups in the following compounds a) b) c)

Value of spin only magnetic moment for one of the following configuration is 2.84 bm.

Using IUPAC norms write the formulae for the following: (a) Tris (ethane - 1, 2 - diamine) chromium (III) chloride (b) Potassium tetrahydroxozincate (II)

Calculate emf of the following cell at 25∘C: Sn|Sn2+(0.001M)||H+(0.01M)|H2 (g)(1 bar)|Pt(s) E0Sn2+/Sn=−0.14 V E0H+/H2=0.00 V

In Wurtz reaction of alkyl halides with sodium the reactivity order of these halides is:

Element Fe has two oxidation states Fe2+ & Fe3+, the correct order of radii of these ions will be:

The % yield of ammonia as a function of time in the reaction : N(g)+3H2(g)⇌2NH3(g), ΔH<0 at (P,T1) is given below. If this reaction is conducted at (P,T2), with T2>T1, the % yield of ammonia as a function of time is represented by: