Organic Chemistry

21.The shape of methane molecule is
 
A. Angular
 
B. planar
 
C. linear
 
D. tetrahedron
 
Option”D” is correct
22.What is the bond angle between carbon and hydrogen in methane molecule?
 
A. 105°
 
B. 120°
 
C. 180°
 
D. 109°28
 
Option”D” is correct
23.The correct statement about methane is –
 
A. It is produced by the bacterial decomposition of plant and animal matter buried below in shallow places.
 
B. It is the first member of the saturated hydrocarbon series.
 
C. It is also called marsh gas.
 
D. all of the above
 
Option”D” is correct
24.Which gas is produced by the reaction of water with aluminum carbide?
 
A. methane
 
B. ethane
 
C. ethylene
 
D. acetylene
 
Option”A” is correct
25.methane is made in the lab
 
A. By heating sodium acetate with sodalime
 
B. By heating sodium propionate with sodalime
 
C. By heating sodium benzoate with sodalime
 
D. none of these
 
Option”A” is correct
26.Which of the following gas is known as marsh gas?
 
A. methane
 
B. ethane
 
C. ethylene
 
D. acetylene
 
Option”A” is correct
27.Which gas is obtained by mixing the gases coming out of the septic tank?
 
A. methane
 
B. ammonia
 
C. hydrogen
 
D. nitrogen
 
Option”A” is correct
28.What is the main component of gobar gas?
 
A. ethane
 
B. methane
 
C. propane
 
D. acetylene
 
Option”B” is correct
29.The main component of natural gas is
 
A. methane
 
B. ethane
 
C. butane
 
D. hydrogen
 
Option”A” is correct
30.What is the main component of bio gas?
 
A. hydrogen
 
B. methane
 
C. butane
 
D. acetylene
 
Option”B” is correct