EASY
10th CBSE
IMPORTANT
Earn 100

Which one of the following is not a fossil fuel?
(a)Petrol
(b)Coke
(c)Charcoal
(d)Coal

45.45% studentsanswered this correctly

Important Questions on Carbon And its Compounds
EASY
10th CBSE
IMPORTANT
The molecular formula of the third member of the homologous series of ketones is:

EASY
10th CBSE
IMPORTANT
The functional group present in propanal is:

MEDIUM
10th CBSE
IMPORTANT
An organic compound having the molecular formula can exist in the form of two isomers. A and B have different functional groups. The isomer A is a liquid which is used as a solvent for nail polish. The isomer B is also a liquid. An aqueous solution of one of the lower homologues of B is used for preserving biological specimens in the laboratory.
a) What is compound A?
b) Write the electron dot structure of A?
c) What is compound B?
d) Write the electron dot structure of B?
e) Name the lower homologue of compound B which is used in preserving biological specimens.

MEDIUM
10th CBSE
IMPORTANT
Name the gas evolved when ethanoic acid is added to sodium carbonate. How would you prove the presence of this gas?

HARD
10th CBSE
IMPORTANT
Which of the following will give brisk effervescence with sodium hydrogen carbonate and why?

EASY
10th CBSE
IMPORTANT
Name the functional group present in an organic compound which gives brisk effervescence with ?

HARD
10th CBSE
IMPORTANT
Name the hydrocarbon formed when ethanol is heated with conc. at ? What is this reaction known as?

MEDIUM
10th CBSE
IMPORTANT
Why does ethyne (acetylene) burn with a sooty flame?
