Extra Questions and Answers

Extract 1

Directions (Q. Nos. 1-6) Read the extract given below and answer the following questions.

Some fire cannot be put out with water. If water is sprayed onto an oil fire, the oil will float to the top of the water and continue to burn. This can be very dangerous because water can flow quickly, carrying the burning oil with it and spreading the fire.

  1. What is oil fire?

Ans. A fire caused because of inflammable oils like petroleum, kerosene, diesel etc is called oil fire.

  1. Name two kinds of fire that cannot be extinguished using water.

Ans. Oil fire and electric fire cannot be extinguished using water.

  1. Why water cannot be used to put out on oil fire?

Ans. Oil being lighter than water floats over it. so water cannot be used to extinguish oil fires. Moreover, as the water spreads it carries along the oil with which in turn extends the fire,

  1. Water cannot extinguish oil fire, but

(a) controls it                             (b) spreads it

(c) has not impact on it          (d) None of these

Ans. (b) spreads it

  1. Find one word from the given lines that is antonym of ‘slow’.

(a) Spray                      (b) Dangerous

(c) Rapid                      (d) Quick

Ans. (d) Quick

  1. What can be used to control oil fires?

(a) Carbon extinguishers

(b) Damp blanket

(c) Sand

(d) All of the above

Ans. (d) All of the above

Extract 2

Directions (Q. Nos. 1-6) Read the extract given below and answer the following questions.

The second way of putting ……….. the burning material. The third way of putting out a fire is to remove the heat.

  1. How can small fires be put out?

Ans. Small fires can be put out using a damp blanket or a sack, since it shops oxygen from reaching the burning material.

  1. What prevents oxygen to reach the burning material?

(a) Nitrogen

(b) Carbon dioxide

(c) Water

(d) Heat

Ans. (b) Carbon dioxide

  1. What is the third way of putting out a fire?

Ans. The third way of putting out a fire is to remove the heat.

  1. What is the method of extinguishing fire mentioned in the above extract?

(a) Removing the heat

(b) Spraying water

(c) Removing the fuel

(d) Removing the supply of oxygen

Ans. (d) Removing the supply of oxygen

  1. Which word in the above extract means ‘stop burning’?

Ans. Extinguish

  1. Which word in the above extract is a synonym of ‘moist’?

Ans. Damp