CBSE - Carbon and Its Compounds

1 Carbon and its Compounds 

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

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

2 Carbon and its Compounds 

Which of the following substance is used for unsaturation test of hydrocarbons

(1) Br₂  solution 
(2) Baeyer's reagent 
(3) Ethylene glycol 
(4) A and B both

3 Carbon and its Compounds 

The gaseous hydrocarbon acetylene, C₂H₂ used in welder's torches, releases 1300 kJ. When 1 mole of C₂H₂ undergoes combustion, then which of the following is not TRUE ?

(1) Combustion of acetylene is an exothermic reaction
(2) The balanced chemical reaction of combustion of acetylene is : C₂H₂ + 5O₂ - > 2CO₂ + H₂O
(3) 2 moles of water produced when 2 moles of acet ylene react s.
(4) 44 g of CO₂ produced when 13 g of acetylene reacts.

4 Carbon and its Compounds 

The functional group in aldehyde is

(1)   (2)  (3)   (4) 

5 Carbon and its Compounds 

Which compound is used to make a soap antiseptic ? 

(1) glycerol 
(2) sulphonic acid 
(3) bithional 
(4) glycerine

6 Carbon and its Compounds 

Which of the following organic molecules does not have carbon-carbon double bond

(1) C₃H₄O
(2) C₃H₄O₂
(3) C₃H₈O
(4) C₆H₆O

7 Carbon and its Compounds 

Which Vitamin is found in abundance in Amla?

(1) Vitamin -A
(2) Vitamin - C
(3) Vitamin - B
(4) Vit amin - D

8 Carbon and its Compounds 

An organic compound 'A' on treating with acidified potassium dichromate solution gives 'B' with molecular mass 60 gm/mol. 'A' on heating with conc. H₂SO₄  of 443 K produces a gas that decolourless bromine water. The compound A is

(1) n-propyl alcohol
(2) iso-propyl alcohol
(3) ethyl alcohol
(4) acetaldehyde

9 Carbon and its Compounds 

An organic compound which is used to preserve biological specimen is 

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

10 Carbon and its Compounds 

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