Class 10 Chemistry MCQs - Chapter 6

Environmental Chemistry I Atmosphere Multiple Choice Questions (MCQ) PDF - 12

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Environmental Chemistry I Atmosphere Questions & Answers PDF Download: MCQ Quiz 12

MCQ 56: What is the term used for the area in which the amount of ozone has been reduced?

A) black hole

B) worm hole

C) ozone hole

D) red hole

MCQ 57: Height of mesosphere is

A) 0-12 Km

B) 12-50 Km

C) 50-80 Km

D) above 80 Km

MCQ 58: Percentage of methane in the air is

A) 0

B) 0

C) 0

D) 0

MCQ 59: A waste treatment process in which solid waste is burned at high temperature is called

A) combustion

B) incineration

C) oxidation

D) reduction

MCQ 60: Which of the following is the first layer of atmosphere as one moves upwards from the Earth's surface?

A) troposphere

B) stratosphere

C) mesosphere

D) thermosphere

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