Essential for Life - Air & Water Worksheet-5

Essential for Life - Air & Water Worksheet-5

 

Multiple-Choice Question:

  1. Which of the following gas does not support burning?

(A) Oxygen                 (B) Nitrogen               (C) Carbon dioxide

 

  1. Which of the following is the lowest layer of the Earth’s atmosphere?

(A) Troposphere        (B) Exosphere            (C) Thermosphere

 

  1. Which of the following factor helps Ankit to drink pepsi with the help of straw?

(A) Air pressure         (B) Liquid pressure  (C) Both of these

 

  1. Impurities that get dissolved in water are known as:

(A) Insoluble impurities

(B) Soluble impurities

(C) None of these

 

  1. The given picture best describes the process of:

(A) Condensation      (B) Evaporation         (C) Melting

 

  1. The process of separating insoluble impurities by allowing the impurities to settle down and pouring the solution above into separate container is known as:

(A) Sedimentation    (B) Decantation         (C) Loading

 

  1. Why chlorine is added to the water of swimming pools?

(A) It promotes the growth of micro-organism in swimming pools

(B) It is a strong disinfectant and good for health

(C) It is a mild disinfectant which inhibit the growth of micro-organisms in the swimming pools

 

  1. The given picture best describes the process of:

(A) Filtration              (B) Sedimentation    (C) Decantation

 

  1. The pressure of air is ____ on the top of the mountain as compared to beach/seashore.

(A) Lesser                  

(B) Greater       

(C) Pressure remains constant at both the places

 

Multiple Choice Questions (with more than one option):

  1. Mark the different layers of Earth’s atmosphere.

(A) Exosphere            (B) Core                       (C) Mantle

       (D) Stratosphere       (E) Troposphere

 

  1. Which of the following factor/s is/are responsible for global warming?

(A) Pollution                        (B) Green house effect

(C) Ozone depletion           (D) Economic growth       

(E) None of these

 

Answer Key:

(1)-(B); (2)-(A); (3)-(A); (4)-(B); (5)-(C); (6)-(B); (7)-(C); (8)-(A); (9)-(A); (10)-(A,D,E); (11)-(A,B,C)