Chemistry Test

Question 1
3 / -1

Under Wolf-Kishner reduction conditions, the conversion which may be brought about is

A
benzaldehyde into benzyl alcohol

B
cyclohexanol into cyclohexanone

C
cyclohexanone into cyclohexanol

D
benzophenone into diphenylmethane

Question 2
3 / -1

When conc. H₂SO₄ is heated with P₂O₅, the acid is converted into

A
sulphur trioxide

B
sulphur dioxide

C
sulphur

D
a mixture of sulphur dioxide and sulphur trioxide

Question 3
3 / -1

Which of the following has the highest knocking?

A
Olefins

B
Branched chain olefins

C
Straight chain olefins

D
Aromatic hydrocarbons

Question 4
3 / -1

Bond energies in NO, NO⁺ and NO^- follow which of the following orders?

A
NO^-> NO > NO⁺

B
NO > NO^- > NO⁺

C
NO⁺ > NO > NO^-

D
NO⁺ > NO^-> NO

Question 5
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Which of the following conformations of butane is most unstable?

A
Anti-eclipsed

B
Skew eclipsed

C
Fully eclipsed

D
Eclipsed

Question 6
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Directions: In the following question, a statement of Assertion is given followed by a statement of Reason just below it. You have to read the statements carefully and choose the correct option accordingly.

Mark your answer as

(a) if both Assertion and Reason are true and Reason is the correct explanation for Assertion

(b) if both Assertion and Reason are true, but Reason is not the correct explanation for Assertion

(c) if Assertion is true, but Reason is false

(d) if both Assertion and Reason are false

Assertion: Rates of nitration of benzene and hexadeuterobenzene are different.

Reason: C - H bond is stronger than C - D bond.

A
(a)

B
(b)

C
(c)

D
(d)

Question 7
3 / -1

Flint glass contains

A
borax

B
excess of sodium carbonate

C
hydrofluoric acid

D
lead oxide

Question 8
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The number of possible isomers of an octahedral complex [Co(C₂O₄)₂(NH₃)₂]- is

A
1

B
2

C
3

D
4

Question 9
3 / -1

Dimethyl glyoxime gives a red precipitate with Ni²⁺, which is used for its detection. To get this precipitate readily, the best pH range is

A
< 1

B
2 - 3

C
3 - 4

D
9 - 11

Question 10
3 / -1

Which of the following compounds is a natural polymer?

A
Protein

B
Polythene

C
Polystyrene

D
PVC

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Chemistry Test ...

Question 1

benzaldehyde into benzyl alcohol

cyclohexanol into cyclohexanone

cyclohexanone into cyclohexanol

benzophenone into diphenylmethane

Question 2

sulphur trioxide

sulphur dioxide

sulphur

a mixture of sulphur dioxide and sulphur trioxide

Question 3

Olefins

Branched chain olefins

Straight chain olefins

Aromatic hydrocarbons

Question 4

NO- > NO > NO+

NO > NO- > NO+

NO+ > NO > NO-

NO+ > NO- > NO

Question 5

Anti-eclipsed

Skew eclipsed

Fully eclipsed

Eclipsed

Question 6

(a)

(b)

(c)

(d)

Question 7

borax

excess of sodium carbonate

hydrofluoric acid

lead oxide

Question 8

1

2

3

4

Question 9

< 1

2 - 3

3 - 4

9 - 11

Question 10

Protein

Polythene

Polystyrene

PVC

User

Question Analysis

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NO^-> NO > NO⁺

NO > NO^- > NO⁺

NO⁺ > NO > NO^-

NO⁺ > NO^-> NO