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Class 10 Quiz Level 3 (Difficult) – Carbon and Its Compounds

Total questions: 10

1.

Which type of reaction mechanism involves the homolytic cleavage of a bond to form free radicals?

Topic: Reaction Mechanisms

Deselect Answer

Electrophilic addition

Nucleophilic substitution

Electrophilic substitution

Free radical substitution

None

2.

What is the hybridization of the central carbon atom in allene (C₃H₄)?

Topic: Hybridization

Deselect Answer

sp

sp²

sp³

sp² and sp

None

3.

Which type of reaction mechanism involves the addition of a nucleophile to an electrophilic carbon center?

Topic: Reaction Mechanisms

Deselect Answer

Electrophilic addition

Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

None

4.

Which reagent is commonly used to reduce aldehydes to primary alcohols?

Topic: Organic Synthesis

Deselect Answer

KMnO₄

PCC

H₂SO₄

NaBH₄

None

5.

Which of the following compounds is not considered aromatic?

Topic: Aromatic Compounds

Deselect Answer

Benzene

Toluene

Cyclooctatetraene

Naphthalene

None

6.

Which type of spectroscopy is most useful for determining the functional groups present in an organic molecule?

Topic: Spectroscopy

Deselect Answer

NMR spectroscopy

IR spectroscopy

UV-Vis spectroscopy

Mass spectrometry

None

7.

Which of the following intermediates is formed during the nitration of benzene?

Topic: Reaction Intermediates

Deselect Answer

Benzyl carbocation

Phenyl radical

Nitronium ion

Benzyne

None

8.

Which reagent is used to convert a primary alcohol to an alkyl halide?

Topic: Organic Synthesis

Deselect Answer

KMnO₄

PCC

H₂SO₄

PBr₃

None

9.

Which reagent is used to selectively oxidize a primary alcohol to an aldehyde without further oxidation to a carboxylic acid?

Topic: Organic Synthesis

Deselect Answer

KMnO₄

PCC

H₂SO₄

LiAlH₄

None

10.

Which conformation of 2-butene is more stable?

Topic: Conformational Analysis

Deselect Answer

Cis

Trans

Eclipsed

Staggered

None

1 out of 10

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