Carbon And Its Compounds Mock Tests

29 questions available

Carbon And Its Compounds Mock Test 1

Questions: 29

Sample Questions

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

A element X reacts with oxygen to form an oxide X₂O which turns blue litmus paper red. The element X is most likely:

A Carbon

B Calcium

C Sodium

D Iron

Class 10 Science

Which of the following statements about the arrangement of elements in Mendeleev's periodic table is correct?

A Elements were arranged by increasing atomic number

B Elements were arranged by increasing atomic mass, and similar properties were placed in the same group

C Elements were arranged randomly without any pattern

D Only metals were arranged in the table

Class 10 Science

What is the general formula for alkanes?

A CₙH₂ₙ

B CₙH₂ₙ₊₂

C CₙH₂ₙ₋₂

D CₙH₂ₙ₊₁OH

Class 10 Science

Ethanol is heated with excess concentrated sulphuric acid at 443 K. What is the major product formed?

A Ethane

B Ethene

C Ethanal

D Ethoxyethane

Class 10 Science

When ethanol is heated with excess concentrated H₂SO₄ at 443K, the product formed is:

A Methanol

B Ethane

C Ethene

D Ethanal

Class 10 Science

Which of the following is a characteristic of a homologous series?

A All members have the same molecular mass

B Adjacent members differ by a CH₂ unit and have a difference of 14 u in molecular mass

C All members show the same physical properties

D Chemical properties vary widely among members

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

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