CBSE - Carbon and Its Compounds

1 Carbon and its Compounds 

Chemical formula of Teflon is-

(1) (-CF₂-CF₂-)_n 
(2)
(3) (-CH₂-CH₂-)_n
(4) None

2 Carbon and its Compounds 

An organic compound which is used to preserve biological specimen is 

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

3 Carbon and its Compounds 

Property of self-combination of the atoms of the same element to form long chains is known as

(1) Protonation
(2) Carbonation
(3) Coronation
(4) Catenation

4 Carbon and its Compounds 

The functional group in aldehyde is

(1)   (2)  (3)   (4) 

5 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.

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 

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

8 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

9 Carbon and its Compounds 

Which compound is used to make a soap antiseptic ? 

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

10 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