Chapter 9: Organic Chemistry Mcqs for High School - Grade 10 - Set 3

1)   Ethers are formed by the attachment of

a. two alkyl groups to same oxygen atom
b. two alkyl group to different oxygen atoms
c. three alkyl groups to one oxygen atom
d. four alkyl groups to one oxygen atom
Answer  Explanation 

ANSWER: two alkyl groups to same oxygen atom

Explanation:
No explanation is available for this question!


2)   Compounds in which one hydrogen atom of an alkane is substituted by one halogen atom are called

a. halo alkanes
b. phenols
c. ethers
d. alcohols
Answer  Explanation 

ANSWER: halo alkanes

Explanation:
No explanation is available for this question!


3)   Methyl has the molecular formula

a. CH4
b. CH3
c. CH
d. CH2
Answer  Explanation 

ANSWER: CH3

Explanation:
No explanation is available for this question!


4)   Process in which coal is heated in the absence of air at high temperature and converted into coal gas, coal tar, and coke is called

a. destructive distillation
b. distillation
c. burning of coal
d. burning of oxygen
Answer  Explanation 

ANSWER: destructive distillation

Explanation:
No explanation is available for this question!


5)   Which of the following is a group of atoms obtained by removing one hydrogen atom from an alkane?

a. alkene
b. alkyne
c. functional group
d. alkyl radical
Answer  Explanation 

ANSWER: alkyl radical

Explanation:
No explanation is available for this question!


6)   If we remove one hydrogen (H) atom from an alkane (saturated hydrocarbon), we get

a. alkyl group
b. alkene group
c. alkyne group
d. aldehyde group
Answer  Explanation 

ANSWER: alkyl group

Explanation:
No explanation is available for this question!


7)   Organic compounds include

a. alkali metals
b. alkaline earth metals
c. hydrocarbons and their derivatives
d. halogens
Answer  Explanation 

ANSWER: hydrocarbons and their derivatives

Explanation:
No explanation is available for this question!


8)   Methanoic acid is an example of

a. aldehydes
b. ketones
c. carboxylic acids
d. ethers
Answer  Explanation 

ANSWER: carboxylic acids

Explanation:
No explanation is available for this question!


9)   An alkane with molecular formula C5H12 is called

a. butane
b. pentane
c. hexane
d. heptane
Answer  Explanation 

ANSWER: pentane

Explanation:
No explanation is available for this question!


10)   Which of the following is widely used in the oxy-acetylene welding and cutting metals?

a. ethylene
b. acetylene
c. phenol
d. methanol
Answer  Explanation 

ANSWER: acetylene

Explanation:
No explanation is available for this question!