Environmental Chemistry MCQ Questions for Class 11 Chemistry Chapter 14 with Answers

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MCQ Questions for Class 11 Chemistry with Answers

Q1. The compound essential for the process of photosynthesis has this element

(A) Ca
(B) Ba
(C) Fe
(D) Mg

(D) Mg

Q2. Which is most harmful for life on globe?

(A) Deforestation
(B) Soil Erosion
(C) Increasing Desert
(D) Nuclear Fallout

(D) Nuclear Fallout

Q3. Which of the following is responsible for depletion of ozone layer in the upper strata of the atmosphere?

(A) Polyhalogens
(B) Ferrocene
(C) Fullerencs
(D) Freons.

(D) Freons.

Q4. Which of the following is the coldest region?

(A) Troposphere
(B) Mesosphere
(C) Stratosphere
(D) Thermosphere.

(B) Mesosphere

Q5. The region closest to earth’s surface is

(A) Stratosphere
(B) Mesosphere
(C) Troposphere
(D) Thermosphere.

Q6. Fluorosis, the bone disease, is caused by the presence of

(A) Pesticides in water
(B) Fluorides in water
(C) Carbon monoxide in air
(D) Sulphur dioxide in air.

(B) Fluorides in water

Q7. In which of the following regions hydrogen and helium are found

(A) Stratosphere
(B) Mesosphere
(C) Exosphere
(D) Troposphere

Q8. Green chemistry means such reasons which

(A) produce colour during reactions
(B) reduce the use and production of hazardous chemicals
(C) are related to the depletion of ozone layer
(D) study the reactions in plants

(B) reduce the use and production of hazardous chemicals

Q9. Pollution can be controlled by

(A) Sewage treatment
(B) Checking atomic blasts
(C) Manufacturing electrically operated vehicles
(D) All the above

(D) All the above

Q10. Excess nitrate in drinking water can cause

(A) methemoglobinemia
(B) kidney damage
(C) liver damage
(D) laxative effect

(A) methemoglobinemia

Q11. One of the following is the chief source of water and soil pollution

(A) Agro industry
(B) Mining
(C) Thermal power stations
(D) All of these

Q12. Ozone layer is present in

(A) Troposphere
(B) Stratosphere
(C) Mesophere
(D) Exosphere

(B) Stratosphere

Q13. The size of the particulates of H₂SO₄ fog lies in the range

(A) 5-100 nm
(B) 100-500 nm
(C) 500-1000 nm
(D) 1000-10000 nm

Q14. Which of the following is responsible for depletion of ozone layer in the upper strata of the atmosphere?