46295 + Interview Questions in Chemistry

1.	Phosgene is the common name of
Answer» Phosgene is the common name of

Discussion

2.	Assertion : Photosensitivity of a metal is high if its work function is small. Reason : Work function hf0 where f0 is the threshold frequency.
Answer» Assertion : Photosensitivity of a metal is high if its work function is small. Reason : Work function $h f_{0}$ where $f_{0}$ is the threshold frequency.

Discussion

3.	Vitamin B12 is called
Answer» Vitamin $B_{12}$ is called

Discussion

4.	A gaseous mixture containing 0.35 g of N2 and 5600ml of O2 at STP is kept in a 5litre flask at 300K. The total pressure of the gaseous mixture is?
Answer» A gaseous mixture containing 0.35 g of N2 and 5600ml of O2 at STP is kept in a 5litre flask at 300K. The total pressure of the gaseous mixture is?

Discussion

5.	Keto-enol tautomerism is not observed in :
Answer» Keto-enol tautomerism is not observed in :

Discussion

6.	Electrolytes when dissolved in water dissociate into their constituent ions. The degree of dissociation of an electrolyte increases with
Answer» Electrolytes when dissolved in water dissociate into their constituent ions. The degree of dissociation of an electrolyte increases with

6.

Electrolytes when dissolved in water dissociate into their constituent ions. The degree of dissociation of an electrolyte increases with

Answer»

Electrolytes when dissolved in water dissociate into their constituent ions.

The degree of dissociation of an electrolyte increases with

Discussion

7.	Which of the following is not a double salt?
Answer» Which of the following is not a double salt?

Discussion

8.	In the video of integrated rate equation ,the reaction was of first order and they told that the time taken for 75% completion of reaction is equal to two half lives but how ?
Answer» In the video of integrated rate equation ,the reaction was of first order and they told that the time taken for 75% completion of reaction is equal to two half lives but how ?

Discussion

9.	Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements StudentsReading(i)(ii)A3.012.99B3.052.95 (a) Results of both the students are neither accurate, nor precise (b) Results of students A are both precise and accurate (c) Results of student B are neither nor accurate (d) Results of student B are both precise and accurate
Answer» Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements $\begin{matrix} S t u d e n t s & R e a d i n g (i) & (i i) A & 3.01 & 2.99 B & 3.05 & 2.95 \end{matrix}$ (a) Results of both the students are neither accurate, nor precise (b) Results of students A are both precise and accurate (c) Results of student B are neither nor accurate (d) Results of student B are both precise and accurate

9.

Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements StudentsReading(i)(ii)A3.012.99B3.052.95 (a) Results of both the students are neither accurate, nor precise (b) Results of students A are both precise and accurate (c) Results of student B are neither nor accurate (d) Results of student B are both precise and accurate

Answer»

Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements

$\begin{matrix} S t u d e n t s & R e a d i n g (i) & (i i) A & 3.01 & 2.99 B & 3.05 & 2.95 \end{matrix}$

(a) Results of both the students are neither accurate, nor precise

(b) Results of students A are both precise and accurate

(c) Results of student B are neither nor accurate

(d) Results of student B are both precise and accurate

Discussion

10.	Which of the following components form an ideal solution?
Answer» Which of the following components form an ideal solution?

Discussion

11.	The value ofis
Answer» The value ofis

Discussion

12.	If the number of atomic orbitals undergoing hybridisation is 4, number of hybrid orbitals formed is:
Answer» If the number of atomic orbitals undergoing hybridisation is 4, number of hybrid orbitals formed is:

Discussion

13.	Among the oxoacids of chlorine which is the best oxidizing agent and why?A. HClO4B. HClO3C. HClO2D. HClO
Answer» Among the oxoacids of chlorine which is the best oxidizing agent and why? A. $H C l O_{4}$ B. $H C l O_{3}$ C. $H C l O_{2}$ D. $H C l O$

Discussion

14.	When the physical state of H2O2 changes from vapour state to solid state,Dihedral angle changes from
Answer» When the physical state of $H_{2}$ $O_{2}$ changes from vapour state to solid state,Dihedral angle changes from

Discussion

15.	A solution of 10 ml M10FeSO4 was titrated with KMnO4 solution in acidic medium. The amount of KMnO4 used will be:
Answer» A solution of 10 ml $\frac{M}{10} F e S O_{4}$ was titrated with $K M n O_{4}$ solution in acidic medium. The amount of $K M n O_{4}$ used will be:

Discussion

16.	In the above reaction, X stands for
Answer» In the above reaction, X stands for

Discussion

17.	Major product of this reaction is:
Answer» Major product of this reaction is:

Discussion

18.	Two nucleotides are linked through
Answer» Two nucleotides are linked through

Discussion

19.	1 molal aqueous solution of which of the following compounds will show the highest freezing point?
Answer» 1 molal aqueous solution of which of the following compounds will show the highest freezing point?

Discussion

20.	(a) Give reasons : (i) H3PO3 undergoes disproportionation reaction but H3PO4 does not. (ii) When Cl2 reacts with excess of F2,ClF3 is formed and not FCl3. (iii) Dioxygen is a gas while Sulphur is a solid at room temperature. (b) Draw the structures of the following : (i) XeF4 (ii) HClO3
Answer» (a) Give reasons : (i) $H_{3} P O_{3}$ undergoes disproportionation reaction but $H_{3} P O_{4}$ does not. (ii) When $C l_{2}$ reacts with excess of $F_{2}, C l F_{3}$ is formed and not $F C l_{3} .$ (iii) Dioxygen is a gas while Sulphur is a solid at room temperature. (b) Draw the structures of the following : (i) $X e F_{4}$ (ii) $H C l O_{3}$

Discussion

21.	CrO3 dissolves in aqueous NaOH to give
Answer» $C r O_{3}$ dissolves in aqueous NaOH to give

Discussion

22.	Equal volumes of 0.1M urea and 0.1M glucose are mixed. The mixture will have:
Answer» Equal volumes of 0.1M urea and 0.1M glucose are mixed. The mixture will have:

Discussion

23.	The formation of PH+4 is difficult compared to NH+4 because:
Answer» The formation of $P H_{4}^{+}$ is difficult compared to $N H_{4}^{+}$ because:

Discussion

24.	An organic compound with the molecular formula C9H10O forms 2, 4 - DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2 - benzene diearboxylic acid. Identify the compound.
Answer» An organic compound with the molecular formula $C_{9} H_{10} O$ forms 2, 4 - DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2 - benzene diearboxylic acid. Identify the compound.

Discussion

25.	Which of the following will give Hofmann alkene?
Answer» Which of the following will give Hofmann alkene?

25.

Which of the following will give Hofmann alkene?

Answer»

Which of the following will give Hofmann alkene?

Discussion

26.	Calculate the value x−y for XeOF4. (x = number of σ bond pair and y= number of lone pair on central atom)
Answer» Calculate the value $x - y f o r X e O F_{4} .$ ( $x$ = number of $σ$ bond pair and $y$ = number of lone pair on central atom)

Discussion

27.	Which of the following is the example of SN2 reaction [CPMT 1999]
Answer» Which of the following is the example of SN² reaction [CPMT 1999]

27.

Which of the following is the example of SN2 reaction [CPMT 1999]

Answer»

Which of the following is the example of SN² reaction

[CPMT 1999]

Discussion

28.	Physical and chemical Properties of acids, bases and salts. (5-10 properties for each)
Answer» Physical and chemical Properties of acids, bases and salts. (5-10 properties for each)

Discussion

29.	Which of the following intermediates is most stable?
Answer» Which of the following intermediates is most stable?

Discussion

30.	To what volume one litre of 0.1M acetic acid solution diluted so that the pH of the solution becomes double of the initial ? ( Ka=1.8×10−5)
Answer» To what volume one litre of 0.1M acetic acid solution diluted so that the pH of the solution becomes double of the initial ? ( $K_{a} = 1.8 \times 10^{- 5}$ )

Discussion

31.	The increasing tendncy of ionic character is-
Answer» The increasing tendncy of ionic character is-

Discussion

32.	Why does a ferrimagnetic substance converts to paramagnetic substance on heating?
Answer» Why does a ferrimagnetic substance converts to paramagnetic substance on heating?

Discussion

33.	For Cu2+ ion in [Cu(H2O)4(en)]2+, [Cu(H2O)2(en)2]2+ and [Cu(en)3]2+ with the stability constant k1, k2 and k3 respectively, which of the following holds true?
Answer» For $C u^{2 +}$ ion in $[C u (H_{2} O)_{4} (e n)]^{2 +}, [C u (H_{2} O)_{2} (e n)_{2}]^{2 +}$ and $[C u (e n)_{3}]^{2 +}$ with the stability constant $k_{1}, k_{2}$ and $k_{3}$ respectively, which of the following holds true?

Discussion

34.	Which of the following is not the correct increasing order of ionization energy?
Answer» Which of the following is not the correct increasing order of ionization energy?

34.

Which of the following is not the correct increasing order of ionization energy?

Answer»

Which of the following is not the correct increasing order of ionization energy?

Discussion

35.	Electromotive force is a
Answer» Electromotive force is a

Discussion

36.	Which acid is formed when $SiF_4$ reacts with water?
Answer» Which acid is formed when $SiF_4$ reacts with water?

Discussion

37.	Give the notation for sub-shell denoted by following quantum numbers: (i) n = 5, l = 2 (ii) n = 6, l = 3
Answer» Give the notation for sub-shell denoted by following quantum numbers: (i) n = 5, l = 2 (ii) n = 6, l = 3

Discussion

38.	With which of the following configuration an atom has the lowest ionization enthalpy?
Answer» With which of the following configuration an atom has the lowest ionization enthalpy?

Discussion

39.	Which of the following represents alkali metals (i.e. 1 group metals) based on (IE)1 and (IE)2 values?
Answer» Which of the following represents alkali metals (i.e. 1 group metals) based on $(I E)_{1}$ and $(I E)_{2}$ values?

Discussion

40.	A substance which participates readily in both acid-base and oxidation-reduction reactions is:
Answer» A substance which participates readily in both acid-base and oxidation-reduction reactions is:

Discussion

41.	Calamine, malachite, magnetite and cryolite, respectively are:
Answer» Calamine, malachite, magnetite and cryolite, respectively are:

Discussion

42.	Why is benzene extra ordinarily stable though it contains three double bonds?
Answer» Why is benzene extra ordinarily stable though it contains three double bonds?

Discussion

43.	Why are the reactions involving deuterium slower than that of protium?
Answer» Why are the reactions involving deuterium slower than that of protium?

Discussion

44.	With increase in temperature, equilibrium constant of a reaction:
Answer» With increase in temperature, equilibrium constant of a reaction:

Discussion

45.	Count the number of significant figures in the measurement:86400?
Answer» Count the number of significant figures in the measurement:86400?

Discussion

46.	CsBr has a BCC structure. The length of edge is 4.3 ∘A. The minimum distance between Cs+ and Br− ion will be (in angstrom):
Answer» $C s B r$ has a BCC structure. The length of edge is $4.3 \circ A$ . The minimum distance between $C s^{+}$ and $B r^{-}$ ion will be (in angstrom):

Discussion

47.	KP for the following reaction at 700k is 1.310-3. The Kc at the same temperature for the reaction 2SO2 + O2 gives 2SO3 will be Answer Kc = 1.310-3/(0.0821700)-1 = 7.410-2 I want to know in (0.0821*700)-1 means what especially power minus one means
Answer» KP for the following reaction at 700k is 1.310^-3. The Kc at the same temperature for the reaction 2SO2 + O2 gives 2SO3 will be Answer Kc = 1.310^-3/(0.0821700)^{-1 =}7.410^-2 I want to know in (0.0821*700)^-1means what especially power minus one means

Discussion

48.	The process, in which no heat enters or leaves the system, is termed as
Answer» The process, in which no heat enters or leaves the system, is termed as

Discussion

49.	The number of second nearest Na+ ions neighbour of a Na+ ion in NaCl structure is
Answer» The number of second nearest Na+ ions neighbour of a Na+ ion in NaCl structure is

Discussion

50.	The arrangement of spheres present in two dimensional hexagonal close packing is:
Answer» The arrangement of spheres present in two dimensional hexagonal close packing is:

Discussion

36.	Which acid is formed when \(SiF_4\) reacts with water?
Answer» Which acid is formed when \(SiF_4\) reacts with water?

Explore topic-wise InterviewSolutions in Current Affairs.

Phosgene is the common name of

Assertion : Photosensitivity of a metal is high if its work function is small. Reason : Work function hf0 where f0 is the threshold frequency.

Vitamin B12 is called

A gaseous mixture containing 0.35 g of N2 and 5600ml of O2 at STP is kept in a 5litre flask at 300K. The total pressure of the gaseous mixture is?

Keto-enol tautomerism is not observed in :

Electrolytes when dissolved in water dissociate into their constituent ions. The degree of dissociation of an electrolyte increases with

Which of the following is not a double salt?

In the video of integrated rate equation ,the reaction was of first order and they told that the time taken for 75% completion of reaction is equal to two half lives but how ?

Which of the following components form an ideal solution?

The value ofis

If the number of atomic orbitals undergoing hybridisation is 4, number of hybrid orbitals formed is:

Among the oxoacids of chlorine which is the best oxidizing agent and why?A. HClO4B. HClO3C. HClO2D. HClO

When the physical state of H2O2 changes from vapour state to solid state,Dihedral angle changes from

A solution of 10 ml M10FeSO4 was titrated with KMnO4 solution in acidic medium. The amount of KMnO4 used will be:

In the above reaction, X stands for

Major product of this reaction is:

Two nucleotides are linked through

1 molal aqueous solution of which of the following compounds will show the highest freezing point?

(a) Give reasons : (i) H3PO3 undergoes disproportionation reaction but H3PO4 does not. (ii) When Cl2 reacts with excess of F2,ClF3 is formed and not FCl3. (iii) Dioxygen is a gas while Sulphur is a solid at room temperature. (b) Draw the structures of the following : (i) XeF4 (ii) HClO3

CrO3 dissolves in aqueous NaOH to give

Equal volumes of 0.1M urea and 0.1M glucose are mixed. The mixture will have:

The formation of PH+4 is difficult compared to NH+4 because:

An organic compound with the molecular formula C9H10O forms 2, 4 - DNP derivative, reduces Tollen's reagent and undergoes Cannizzaro reaction. On vigorous oxidation, it gives 1, 2 - benzene diearboxylic acid. Identify the compound.

Which of the following will give Hofmann alkene?

Calculate the value x−y for XeOF4. (x = number of σ bond pair and y= number of lone pair on central atom)

Which of the following is the example of SN2 reaction [CPMT 1999]

Physical and chemical Properties of acids, bases and salts. (5-10 properties for each)

Which of the following intermediates is most stable?

To what volume one litre of 0.1M acetic acid solution diluted so that the pH of the solution becomes double of the initial ? ( Ka=1.8×10−5)

The increasing tendncy of ionic character is-

Why does a ferrimagnetic substance converts to paramagnetic substance on heating?

For Cu2+ ion in [Cu(H2O)4(en)]2+, [Cu(H2O)2(en)2]2+ and [Cu(en)3]2+ with the stability constant k1, k2 and k3 respectively, which of the following holds true?

Which of the following is not the correct increasing order of ionization energy?

Electromotive force is a

Which acid is formed when \(SiF_4\) reacts with water?

Give the notation for sub-shell denoted by following quantum numbers: (i) n = 5, l = 2 (ii) n = 6, l = 3

With which of the following configuration an atom has the lowest ionization enthalpy?

Which of the following represents alkali metals (i.e. 1 group metals) based on (IE)1 and (IE)2 values?

A substance which participates readily in both acid-base and oxidation-reduction reactions is:

Calamine, malachite, magnetite and cryolite, respectively are:

Why is benzene extra ordinarily stable though it contains three double bonds?

Why are the reactions involving deuterium slower than that of protium?

With increase in temperature, equilibrium constant of a reaction:

Count the number of significant figures in the measurement:86400?

CsBr has a BCC structure. The length of edge is 4.3 ∘A. The minimum distance between Cs+ and Br− ion will be (in angstrom):

KP for the following reaction at 700k is 1.3*10-3. The Kc at the same temperature for the reaction 2SO2 + O2 gives 2SO3 will be Answer Kc = 1.3*10-3/(0.0821*700)-1 = 7.4*10-2 I want to know in (0.0821*700)-1 means what especially power minus one means

The process, in which no heat enters or leaves the system, is termed as

The number of second nearest Na+ ions neighbour of a Na+ ion in NaCl structure is

The arrangement of spheres present in two dimensional hexagonal close packing is:

KP for the following reaction at 700k is 1.310-3. The Kc at the same temperature for the reaction 2SO2 + O2 gives 2SO3 will be Answer Kc = 1.310-3/(0.0821700)-1 = 7.410-2 I want to know in (0.0821*700)-1 means what especially power minus one means