Chapter 6: Environmental Chemistry I Atmosphere Chemistry Mcqs for High School - Grade 10 - Set 2

1)   Percentage of hydrogen in the air is

a. 0.99
b. 0.8
c. 0.5
d. 0.25
Answer  Explanation 

ANSWER: 0.25

Explanation:
No explanation is available for this question!


2)   Which of the following have an impact on brain development in human beings especially among children?

a. chlorofluorocarbons (CFCs)
b. methane
c. carbon monoxide
d. lead compounds
Answer  Explanation 

ANSWER: lead compounds

Explanation:
No explanation is available for this question!


3)   Which of the following is true about ozone?

a. light blue in colour
b. odourless
c. not harmful
d. not a pollutant
Answer  Explanation 

ANSWER: light blue in colour

Explanation:
No explanation is available for this question!


4)   Which of the following is a powerful irritant which can aggravate the symptoms of people who suffer from respiratory disorders?

a. sulphur dioxide
b. carbon monoxide
c. carbon dioxide
d. oxides of nitrogen
Answer  Explanation 

ANSWER: sulphur dioxide

Explanation:
No explanation is available for this question!


5)   What is meant by the term 'meso'?

a. top
b. middle
c. turning
d. changing
Answer  Explanation 

ANSWER: middle

Explanation:
No explanation is available for this question!


6)   Which of the following is further divided into two layers?

a. troposphere
b. stratosphere
c. mesosphere
d. thermosphere
Answer  Explanation 

ANSWER: thermosphere

Explanation:
No explanation is available for this question!


7)   Group of chemically unreactive compounds that are commonly used as solvents are called

a. chlorofluorocarbons (CFCs)
b. functional groups
c. alkyl groups
d. lead compounds
Answer  Explanation 

ANSWER: chlorofluorocarbons (CFCs)

Explanation:
No explanation is available for this question!


8)   Which of the following is produced when dead plant material decays in the absence of air?

a. chlorofluorocarbons (CFCs)
b. methane
c. carbon monoxide
d. lead compounds
Answer  Explanation 

ANSWER: methane

Explanation:
No explanation is available for this question!


9)   Which two main gases are produced when you burn a piece of wood?

a. oxygen and nitrogen
b. carbon dioxide and oxygen
c. carbon dioxide and carbon monoxide
d. carbon dioxide and nitrogen
Answer  Explanation 

ANSWER: carbon dioxide and carbon monoxide

Explanation:
No explanation is available for this question!


10)   The occurrence of weather is in

a. troposphere
b. stratosphere
c. mesosphere
d. thermosphere
Answer  Explanation 

ANSWER: troposphere

Explanation:
No explanation is available for this question!