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1. In bromine water test, alkenes cause:

A Formation of precipitate

B No change

C Decolorization

D Gas evolution

2. Unsaturated hydrocarbons mainly undergo which type of reactions?

A Substitution

B Addition

C Neutralization

D Displacement

3. Which alcohol is commonly used in spirit lamps?

A Methanol

B Ethanol

C Butanol

D Pentanol

4. Which salt is formed when ethanoic acid reacts with sodium metal?

A Sodium acetate

B Sodium carbonate

C Sodium bicarbonate

D Sodium hydroxide

5. Which bond is present in alkynes?

A Single bond

B Double bond

C Triple bond

D Ionic bond

6. Dehydration of alcohols results in the formation of:

A Alkanes

B Alkenes

C Alkynes

D Aldehydes

7. Which product is common in reactions of carboxylic acids with bases?

A Hydrogen

B Salt

C Ester

D Carbon dioxide

8. Which factor increases alcohol-related health risks?

A Moderate use

B Excessive use

C Occasional use

D Medical use

9. Which substance turns purple KMnO4 colorless?

A Alkane

B Alkene

C Alcohol

D Salt

10. Which bond is present in alkenes?

A Single bond only

B Triple bond

C Double bond

D Ionic bond

Quarter 3

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