46295 + Interview Questions in Chemistry

1.	When two reactants, A and B are mixed to give products C and D such that A + B ⇋ C + D the reaction quotient, Q = [C][D][A][B] at the final stages of the reaction
Answer» When two reactants, A and B are mixed to give products C and D such that A + B $⇋$ C + D the reaction quotient, Q = $\frac{[C] [D]}{[A] [B]}$ at the final stages of the reaction

1.

When two reactants, A and B are mixed to give products C and D such that A + B ⇋ C + D the reaction quotient, Q = [C][D][A][B] at the final stages of the reaction

Answer»

When two reactants, A and B are mixed to give products C and D such that
A + B $⇋$ C + D

the reaction quotient, Q = $\frac{[C] [D]}{[A] [B]}$ at the final stages of the reaction

2.	What is the molarity of 4% W/W NaOH solution ? (Given: density of solution is 1.2 g/mL).
Answer» What is the molarity of $4 %$ W/W $N a O H$ solution ? (Given: density of solution is $1.2 g / m L$ ).

Discussion

3.	Which of the following has a bond formed by overlap of sp−sp3 hybrid orbitals?
Answer» Which of the following has a bond formed by overlap of $s p - s p^{3}$ hybrid orbitals?

Discussion

4.	Are the following set of ordered pairs functions? If so examine whether the mapping is injective or surjective. (i) f={(x,y):x is a person, y is the mother of x} (ii) g={(a,b):a is a person, b is the ancestor of a}
Answer» Are the following set of ordered pairs functions? If so examine whether the mapping is injective or surjective. (i) $f = {(x, y) : x is a person, y is the mother of x}$ (ii) $g = {(a, b) : a is a person, b is the ancestor of a}$

4.

Are the following set of ordered pairs functions? If so examine whether the mapping is injective or surjective. (i) f={(x,y):x is a person, y is the mother of x} (ii) g={(a,b):a is a person, b is the ancestor of a}

Answer»

Are the following set of ordered pairs functions? If so examine whether the mapping is injective or surjective.

(i) $f = {(x, y) : x is a person, y is the mother of x}$

(ii) $g = {(a, b) : a is a person, b is the ancestor of a}$

Discussion

5.	When cholorobenzene is heated with copper powder in a sealed tube, it gives
Answer» When cholorobenzene is heated with copper powder in a sealed tube, it gives

Discussion

6.	Which of the following is/are elimination reaction(s)?
Answer» Which of the following is/are elimination reaction(s)?

Discussion

7.	Which of the following is used as antipyretic
Answer» Which of the following is used as antipyretic

Discussion

8.	The hottest region of Bunsen flame shown in the figure below is:
Answer» The hottest region of Bunsen flame shown in the figure below is:

8.

The hottest region of Bunsen flame shown in the figure below is:

Answer»

The hottest region of Bunsen flame shown in the figure below is:

Discussion

9.	Which one of the following mixtures can be separated into pure components by fractional distillation?
Answer» Which one of the following mixtures can be separated into pure components by fractional distillation?

Discussion

10.	SiCl4+4H2O→X+4HCl. ‘X’ on heating upto 1000∘C, ‘Y’ is obtained. ‘Y’ on treating with excess HF, the final product obtained is
Answer» $S i C l_{4} + 4 H_{2} O \to X + 4 H C l$ . ‘X’ on heating upto $1000^{\circ} C$ , ‘Y’ is obtained. ‘Y’ on treating with excess HF, the final product obtained is

Discussion

11.	1.0 g of a sample containing KMnO4 and some inert impurity was dissolved in dilute solution of KOH and volume was made up to 100 mL. To this solution, some ammonia gas was passed where the following redox reaction occured: NH3+KMnO4→ N2+MnO2(s) Volume of N2 measured at N.T.P. was 28 mL. The solution was filtered off to remove MnO2(s) and a 10 mL portion of the filtrate required 22.5 mL of a 0.01 M oxalate solution to reach the end point. The mass percentage of KMnO4 in the original sample is .
Answer» 1.0 g of a sample containing $K M n O_{4}$ and some inert impurity was dissolved in dilute solution of KOH and volume was made up to 100 mL. To this solution, some ammonia gas was passed where the following redox reaction occured: $N H_{3} + K M n O_{4} \to N_{2} + M n O_{2} (s)$ Volume of $N_{2}$ measured at N.T.P. was 28 mL. The solution was filtered off to remove $M n O_{2} (s)$ and a 10 mL portion of the filtrate required 22.5 mL of a 0.01 M oxalate solution to reach the end point. The mass percentage of $K M n O_{4}$ in the original sample is .

Discussion

12.	Mg+B→A. A is
Answer» $M g + B \to A$ . A is

Discussion

13.	The general electronic configuration of d-block elements is:
Answer» The general electronic configuration of d-block elements is:

Discussion

14.	The basicity of Sulphurous acid is:
Answer» The basicity of Sulphurous acid is:

Discussion

15.	Which of the following represent glyptal –
Answer» Which of the following represent glyptal –

Discussion

16.	Which of the following properties among halogen decrease from fluorine to iodine?
Answer» Which of the following properties among halogen decrease from fluorine to iodine?

Discussion

17.	(CH3)3 C Mg Br on reaction D2O gives
Answer» (CH₃)₃ C Mg Br on reaction D₂O gives

Discussion

18.	When an octahedron is truncated from every corner at a distance a4 (a = side length of octahedral). What is the difference in the number of hexagonal faces and square faces created after truncation?
Answer» When an octahedron is truncated from every corner at a distance $\frac{a}{4}$ (a = side length of octahedral). What is the difference in the number of hexagonal faces and square faces created after truncation?

Discussion

19.	Which of the following alkali metal bicarbonates readily decomposes?
Answer» Which of the following alkali metal bicarbonates readily decomposes?

Discussion

20.	The reactivities of methyl chloride, propyl chloride and chlorobenzene are in the order [KCET 1988]
Answer» The reactivities of methyl chloride, propyl chloride and chlorobenzene are in the order [KCET 1988]

20.

The reactivities of methyl chloride, propyl chloride and chlorobenzene are in the order [KCET 1988]

Answer»

The reactivities of methyl chloride, propyl chloride and chlorobenzene are in

the order

[KCET 1988]

Discussion

21.	An aqueous solution of a non-electrolyte boils at 100.52°C. The freezing point of the solution will be
Answer» An aqueous solution of a non-electrolyte boils at 100.52°C. The freezing point of the solution will be

21.

An aqueous solution of a non-electrolyte boils at 100.52°C. The freezing point of the solution will be

Answer»

An aqueous solution of a non-electrolyte boils at 100.52°C. The freezing point of the solution will be

Discussion

22.	Arrange the elements N, P O and S in the order of (i) increasing first ionisation enthalpy. (ii) Increasing non-metalic character. Give reason for the arrangement assigned.
Answer» Arrange the elements N, P O and S in the order of (i) increasing first ionisation enthalpy. (ii) Increasing non-metalic character. Give reason for the arrangement assigned.

22.

Arrange the elements N, P O and S in the order of (i) increasing first ionisation enthalpy. (ii) Increasing non-metalic character. Give reason for the arrangement assigned.

Answer»

Arrange the elements N, P O and S in the order of
(i) increasing first ionisation enthalpy.

(ii) Increasing non-metalic character. Give reason for the arrangement assigned.

Discussion

23.	Use molecular orbital theory to explain why the Be2 molecule does not exist.
Answer» Use molecular orbital theory to explain why the $B e_{2}$ molecule does not exist.

Discussion

24.	Consider the following reactions: I.Me3C−Cl⊖OH−−→Me3C−OHII.F3C−CH\|Me−Cl⊖OH−−→F3C−CH\|Me−OHIII.Me3C−Cl90%D2O+10%ether−−−−−−−−−−−−→Me3C−ODIV.Me3C−Cl90%H2O+10%ether−−−−−−−−−−−−→Me3C−OH Which of the following statements are correct?
Answer» Consider the following reactions: $I . M e_{3} C - C l ⊖ O H - - \to M e_{3} C - O H I I . F_{3} C - C H \| M e - C l ⊖ O H - - \to F_{3} C - C H \| M e - O H I I I . M e_{3} C - C l 90 % D_{2} O + 10 % e t h e r - ----------- \to M e_{3} C - O D I V . M e_{3} C - C l 90 % H_{2} O + 10 % e t h e r - ----------- \to M e_{3} C - O H$ Which of the following statements are correct?

24.

Consider the following reactions: I.Me3C−Cl⊖OH−−→Me3C−OHII.F3C−CH|Me−Cl⊖OH−−→F3C−CH|Me−OHIII.Me3C−Cl90%D2O+10%ether−−−−−−−−−−−−→Me3C−ODIV.Me3C−Cl90%H2O+10%ether−−−−−−−−−−−−→Me3C−OH Which of the following statements are correct?

Answer»

Consider the following reactions:

$I . M e_{3} C - C l ⊖ O H - - \to M e_{3} C - O H I I . F_{3} C - C H | M e - C l ⊖ O H - - \to F_{3} C - C H | M e - O H I I I . M e_{3} C - C l 90 % D_{2} O + 10 % e t h e r - ----------- \to M e_{3} C - O D I V . M e_{3} C - C l 90 % H_{2} O + 10 % e t h e r - ----------- \to M e_{3} C - O H$

Which of the following statements are correct?

Discussion

25.	The molarity of 98% H2SO4 (d=1.8 gml) by weight is :
Answer» The molarity of $98 %$ $H_{2} S O_{4}$ $(d = 1.8 \frac{g}{m l})$ by weight is :

Discussion

26.	The orbital diagram in which the Aufbau's principle is violated is:
Answer» The orbital diagram in which the Aufbau's principle is violated is:

Discussion

27.	Structure of IF+4 and hybridization of iodine in this structure are
Answer» Structure of $I F_{4}^{+}$ and hybridization of iodine in this structure are

Discussion

28.	The maximum number of electrons that can be present in s, p, d and f respectively are:
Answer» The maximum number of electrons that can be present in s, p, d and f respectively are:

Discussion

29.	For conversion C (graphite ) ⟶ C (diamond ) the ΔS is
Answer» For conversion C (graphite ) $⟶$ C (diamond ) the $Δ S$ is

Discussion

30.	What happens to molar conductivity when one mole of kcl is dissolved in one litre is diluted to five litres?
Answer» What happens to molar conductivity when one mole of kcl is dissolved in one litre is diluted to five litres?

Discussion

31.	Match the polymer of Column I with correct monomer of Column II. ColumnI ColumnIIA.High density polyethene1.IsopreneB.Neoprene2.Tetrafluoro etheneC.Natural rubber3.ChloropreneD.Teflon4.AcrylonitrileE.Acrilan5.Ethene
Answer» Match the polymer of Column I with correct monomer of Column II. $\begin{matrix} C o l u m n I & C o l u m n I I A . & H i g h d e n s i t y p o l y e t h e n e & 1. & I s o p r e n e B . & N e o p r e n e & 2. & T e t r a f l u o r o e t h e n e C . & N a t u r a l r u b b e r & 3. & C h l o r o p r e n e D . & T e f l o n & 4. & A c r y l o n i t r i l e E . & A c r i l a n & 5. & E t h e n e \end{matrix}$

31.

Match the polymer of Column I with correct monomer of Column II. ColumnI ColumnIIA.High density polyethene1.IsopreneB.Neoprene2.Tetrafluoro etheneC.Natural rubber3.ChloropreneD.Teflon4.AcrylonitrileE.Acrilan5.Ethene

Answer»

Match the polymer of Column I with correct monomer of Column II.

$\begin{matrix} C o l u m n I & C o l u m n I I A . & H i g h d e n s i t y p o l y e t h e n e & 1. & I s o p r e n e B . & N e o p r e n e & 2. & T e t r a f l u o r o e t h e n e C . & N a t u r a l r u b b e r & 3. & C h l o r o p r e n e D . & T e f l o n & 4. & A c r y l o n i t r i l e E . & A c r i l a n & 5. & E t h e n e \end{matrix}$

Discussion

32.	Which of the following are example of synthetic rubber? (a) Polychloroprene (b) Polyacrylonitrile (c) Buna-N (d) cis-polyisoprene
Answer» Which of the following are example of synthetic rubber? (a) Polychloroprene (b) Polyacrylonitrile (c) Buna-N (d) cis-polyisoprene

32.

Which of the following are example of synthetic rubber? (a) Polychloroprene (b) Polyacrylonitrile (c) Buna-N (d) cis-polyisoprene

Answer»

Which of the following are example of synthetic rubber?

(a) Polychloroprene

(b) Polyacrylonitrile

(c) Buna-N

(d) cis-polyisoprene

Discussion

33.	646g of ammonia is allowed to react with 1.144kg of CO2 to form urea identify the limiting reagent calculate the amount of urea formed and interacted quality of excess agent 2NH3+CO2----------- NH2CONH2+H2O
Answer» 646g of ammonia is allowed to react with 1.144kg of CO2 to form urea identify the limiting reagent calculate the amount of urea formed and interacted quality of excess agent 2NH3+CO2----------- NH2CONH2+H2O

33.

646g of ammonia is allowed to react with 1.144kg of CO2 to form urea identify the limiting reagent calculate the amount of urea formed and interacted quality of excess agent 2NH3+CO2----------- NH2CONH2+H2O

Answer»

646g of ammonia is allowed to react with 1.144kg of CO2 to form urea identify the limiting reagent calculate the amount of urea formed and interacted quality of excess agent

2NH3+CO2----------- NH2CONH2+H2O

Discussion

34.	The amount work done by 2 moles of an ideal gas at 298 K in reversible isothermal expansion from 10 litres to 20 litres is.
Answer» The amount work done by 2 moles of an ideal gas at 298 K in reversible isothermal expansion from 10 litres to 20 litres is.

Discussion

35.	The bond dissociation energy of gaseous H2,Cl2 and HCl are 104, 58 and 103 kcal mol−1 respectively. The enthalpy of formation for HCl gas will be
Answer» The bond dissociation energy of gaseous $H_{2}, C l_{2}$ and HCl are 104, 58 and 103 $k c a l m o l^{- 1}$ respectively. The enthalpy of formation for $H C l$ gas will be

Discussion

36.	In the mechanism of chlorination of ethane the reaction not involved is
Answer» In the mechanism of chlorination of ethane the reaction not involved is

Discussion

37.	100 ml of O2 gas diffuses in 10 s. 100 ml of gas 'X' diffuses in 't' sec. Gas 'X' and time 't' can be respectively:
Answer» 100 ml of $O_{2}$ gas diffuses in 10 s. 100 ml of gas 'X' diffuses in 't' sec. Gas 'X' and time 't' can be respectively:

Discussion

38.	Which is a pair of geometrical isomers? I. II. III. IV.
Answer» Which is a pair of geometrical isomers? I. II. III. IV.

38.

Which is a pair of geometrical isomers? I. II. III. IV.

Answer»

Which is a pair of geometrical isomers?

I. II.
III. IV.

Discussion

39.	Battery do not provide charge but in denial cell zn converted zn±by one election which results in flow of current does this mean battery provide charge tell me sir ormam
Answer» Battery do not provide charge but in denial cell zn converted zn±by one election which results in flow of current does this mean battery provide charge tell me sir ormam

Discussion

40.	Sign of entropy when raw egg changes to boiled egg
Answer» Sign of entropy when raw egg changes to boiled egg

Discussion

41.	PbO2 is
Answer» $P b O_{2}$ is

41.

PbO2 is

Answer»

$P b O_{2}$ is

Discussion

42.	Which of the following would not react with benzene sulphonyl chloride in aq NaOH?
Answer» Which of the following would not react with benzene sulphonyl chloride in aq NaOH?

Discussion

43.	Initial concentration of the reactant is 1 M .. the concentration becomes 0.9 0.8 0.7 in 2 hr ,4 hr, 6 hr respectively then order of the reaction Ans is 0 pls put it on the paper
Answer» Initial concentration of the reactant is 1 M .. the concentration becomes 0.9 0.8 0.7 in 2 hr ,4 hr, 6 hr respectively then order of the reaction Ans is 0 pls put it on the paper

43.

Initial concentration of the reactant is 1 M .. the concentration becomes 0.9 0.8 0.7 in 2 hr ,4 hr, 6 hr respectively then order of the reaction Ans is 0 pls put it on the paper

Answer»

Initial concentration of the reactant is 1 M .. the concentration becomes 0.9 0.8 0.7 in 2 hr ,4 hr, 6 hr respectively then order of the reaction

Ans is 0 pls put it on the paper

Discussion

44.	For 24Cr, which of the following statements is/are correct:
Answer» For $_{24} C r$ , which of the following statements is/are correct:

Discussion

45.	The final product produced in the following reaction is : CH3−C−H+HCN→(A)H3O⊕−−−→(B) ∥ O
Answer» The final product produced in the following reaction is : $C H_{3} - C - H + H C N \to (A) H_{3} O^{\oplus} - -- \to (B) ∥ O$

Discussion

46.	Which of the following reagents will be useful in distinguishing between following two amines?
Answer» Which of the following reagents will be useful in distinguishing between following two amines?

Discussion

47.	Why are third group elements called bridge elements?
Answer» Why are third group elements called bridge elements?

Discussion

48.	Let S1 and S2 be the foci of the hyperbola whose length of transverse axis is 6 and length of conjugate axis is 10. If S3 and S4 are the foci of the conjugate hyperbola of the given hyperbola, then the area of the quadrilateral S1S2S3S4 is
Answer» Let $S_{1}$ and $S_{2}$ be the foci of the hyperbola whose length of transverse axis is $6$ and length of conjugate axis is $10$ . If $S_{3}$ and $S_{4}$ are the foci of the conjugate hyperbola of the given hyperbola, then the area of the quadrilateral $S_{1} S_{2} S_{3} S_{4}$ is

Discussion

49.	If some moles of O2 diffuse in 18 sec and same moles of other gas diffuse in 45 sec then what is the molecular weight of the unknown gas
Answer» If some moles of $O_{2}$ diffuse in 18 sec and same moles of other gas diffuse in 45 sec then what is the molecular weight of the unknown gas

Discussion

50.	The final product found in the reaction below is : C6H5COOHLiAlH4−−−−→(ii)H3O ___
Answer» The final product found in the reaction below is : $C_{6} H_{5} C O O H L i A l H_{4} - --- \to (i i) H_{3} O$ ___

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

When two reactants, A and B are mixed to give products C and D such that A + B ⇋ C + D the reaction quotient, Q = [C][D][A][B] at the final stages of the reaction

What is the molarity of 4% W/W NaOH solution ? (Given: density of solution is 1.2 g/mL).

Which of the following has a bond formed by overlap of sp−sp3 hybrid orbitals?

Are the following set of ordered pairs functions? If so examine whether the mapping is injective or surjective. (i) f={(x,y):x is a person, y is the mother of x} (ii) g={(a,b):a is a person, b is the ancestor of a}

When cholorobenzene is heated with copper powder in a sealed tube, it gives

Which of the following is/are elimination reaction(s)?

Which of the following is used as antipyretic

The hottest region of Bunsen flame shown in the figure below is:

Which one of the following mixtures can be separated into pure components by fractional distillation?

SiCl4+4H2O→X+4HCl. ‘X’ on heating upto 1000∘C, ‘Y’ is obtained. ‘Y’ on treating with excess HF, the final product obtained is

Mg+B→A. A is

The general electronic configuration of d-block elements is:

The basicity of Sulphurous acid is:

Which of the following represent glyptal –

Which of the following properties among halogen decrease from fluorine to iodine?

(CH3)3 C Mg Br on reaction D2O gives

When an octahedron is truncated from every corner at a distance a4 (a = side length of octahedral). What is the difference in the number of hexagonal faces and square faces created after truncation?

Which of the following alkali metal bicarbonates readily decomposes?

The reactivities of methyl chloride, propyl chloride and chlorobenzene are in the order [KCET 1988]

An aqueous solution of a non-electrolyte boils at 100.52°C. The freezing point of the solution will be

Arrange the elements N, P O and S in the order of (i) increasing first ionisation enthalpy. (ii) Increasing non-metalic character. Give reason for the arrangement assigned.

Use molecular orbital theory to explain why the Be2 molecule does not exist.

The molarity of 98% H2SO4 (d=1.8 gml) by weight is :

The orbital diagram in which the Aufbau's principle is violated is:

Structure of IF+4 and hybridization of iodine in this structure are

The maximum number of electrons that can be present in s, p, d and f respectively are:

For conversion C (graphite ) ⟶ C (diamond ) the ΔS is

What happens to molar conductivity when one mole of kcl is dissolved in one litre is diluted to five litres?

Match the polymer of Column I with correct monomer of Column II. ColumnI ColumnIIA.High density polyethene1.IsopreneB.Neoprene2.Tetrafluoro etheneC.Natural rubber3.ChloropreneD.Teflon4.AcrylonitrileE.Acrilan5.Ethene

Which of the following are example of synthetic rubber? (a) Polychloroprene (b) Polyacrylonitrile (c) Buna-N (d) cis-polyisoprene

646g of ammonia is allowed to react with 1.144kg of CO2 to form urea identify the limiting reagent calculate the amount of urea formed and interacted quality of excess agent 2NH3+CO2----------- NH2CONH2+H2O

The amount work done by 2 moles of an ideal gas at 298 K in reversible isothermal expansion from 10 litres to 20 litres is.

The bond dissociation energy of gaseous H2,Cl2 and HCl are 104, 58 and 103 kcal mol−1 respectively. The enthalpy of formation for HCl gas will be

In the mechanism of chlorination of ethane the reaction not involved is

100 ml of O2 gas diffuses in 10 s. 100 ml of gas 'X' diffuses in 't' sec. Gas 'X' and time 't' can be respectively:

Which is a pair of geometrical isomers? I. II. III. IV.

Battery do not provide charge but in denial cell zn converted zn±by one election which results in flow of current does this mean battery provide charge tell me sir ormam

Sign of entropy when raw egg changes to boiled egg

PbO2 is

Which of the following would not react with benzene sulphonyl chloride in aq NaOH?

Initial concentration of the reactant is 1 M .. the concentration becomes 0.9 0.8 0.7 in 2 hr ,4 hr, 6 hr respectively then order of the reaction Ans is 0 pls put it on the paper

For 24Cr, which of the following statements is/are correct:

The final product produced in the following reaction is : CH3−C−H+HCN→(A)H3O⊕−−−→(B) ∥ O

Which of the following reagents will be useful in distinguishing between following two amines?

Why are third group elements called bridge elements?

Let S1 and S2 be the foci of the hyperbola whose length of transverse axis is 6 and length of conjugate axis is 10. If S3 and S4 are the foci of the conjugate hyperbola of the given hyperbola, then the area of the quadrilateral S1S2S3S4 is

If some moles of O2 diffuse in 18 sec and same moles of other gas diffuse in 45 sec then what is the molecular weight of the unknown gas

The final product found in the reaction below is : C6H5COOHLiAlH4−−−−→(ii)H3O ___