CBSE - Carbon and Its Compounds

1 Carbon and its Compounds 

The number of carbon atom in kerosene oil is

(1) C₆– C₁₁
(2) C₂₀ – C₃₀
(3) C₁₁ – C₁₆
(4) C₁₈ – C₂₂ 

2 Carbon and its Compounds 

Hydrocarbon 2-methylbutane is an isomer of

(1) n-pentane
(2) n-butane
(3) propane
(4) iso-butanens.

3 Carbon and its Compounds 

Chlorine reacts with saturated hydrocarbons at room temperature in the

(1) absence of sunlight
(2) presence of sunlight
(3) absence of moisture
(4) presence of H₂SO₄ 

4 Carbon and its Compounds 

Coal is called fossil fuel because :

(1) In future coal will become completely exhausted
(2) It was formed 300 million years ago
(3) Fossils are obtained along with mining of coal
(4) It was formed from the dead remains of living organisms

5 Carbon and its Compounds 

The action of cleaning of oily dirt by soap is based on .......

(1) solubility in water
(2) hydrophilic property
(3) hydrophobic property
(4) presence of both hydrophilic and hydrophobic groups

6 Carbon and its Compounds 

Which of the following class of organic compound does not contain (C = O) group in some form ?

(1) Aldehydes
(2) Ethers
(3) Carboxylic acids
(4) Esters

7 Carbon and its Compounds 

The allotrope of carbon in amorphous form among the following is .......

(1) Diamond
(2) Graphite
(3) Buckministerfullerene
(4) Coal

8 Carbon and its Compounds 

Which of the following hydrocarbons have acidic hydrogen?
(1) CH₂=CH₂
(2)
(3) CH₄
(4) C₆H₆

9 Carbon and its Compounds 

A strip of copper is placed in four different colourless salt solution. The salt solutions are NaNO₃, Zn(NO₃)₂ , Mg(NO₃)₂, , AgNO₃  Which one of the solution will finally turn blue

(1) AgNO₃ 
(2) Zn(NO₃)₂ 
(3) Mg(NO₃)₂ 
(4) NaNO₃

10 Carbon and its Compounds 

An organic compound which is used to preserve biological specimen is 

(1) ether 
(2) methanal 
(3) ethanal 
(4) ethanol