Carbon And Its Compounds Mock Tests

29 questions available

Carbon And Its Compounds Mock Test 1

Questions: 29

Sample Questions

Class 10 Science

Soap cleans clothes well because:

A Soap is alkaline in nature

B The hydrophobic tail traps dirt while the hydrophilic head faces water, forming micelles

C Soap dissolves grease completely

D Soap increases the temperature of water

Class 10 Science

An organic compound burns with a sooty flame. It decolorizes bromine water. The compound is most likely:

A Methane

B Ethane

C Ethene

D Ethanol

Class 10 Science

Soap cleans clothes effectively because:

A Soap molecules dissolve dirt chemically

B Soap molecules form micelles that trap oil/dirt, allowing it to be washed away with water

C Soap increases the temperature of water

D Soap makes water acidic, which dissolves dirt

NDA General Test

Which of the following is used as a lubricant in machines?

A Diamond

B Graphite

C Coal

D Charcoal

Class 10 Science

When a diamond ring is heated in oxygen, it burns to form carbon dioxide. This property of diamond is used in:

A Cutting glass

B Jewellery

C Diamond test by combustion

D Making drills

Class 10 Science

How do soap molecules help in removing grease from clothes when washed with water?

A Soap molecules dissolve grease chemically, breaking it down into smaller molecules

B Soap molecules form micelles that trap grease at the centre, allowing it to be suspended in water

C Soap molecules increase the temperature of water, melting the grease

D Soap molecules react with grease to form a soluble salt

Class 10 Science

When ethanol is heated with excess concentrated sulphuric acid at 443 K, the major product formed is:

A Ethanal

B Ethanoic acid

C Ethene

D Ethyl sulphate

Class 10 Science

Which of the following statements about homologous series is correct?

A All members have same chemical and physical properties

B Members differ by CH₂ group and have same functional group

C Members have same molecular mass

D Homologous series exist only in organic compounds with single bonds

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