Secondary School (English Medium) (5 to 8) Class 7 - CBSE Question Bank Solutions

Paheli and Boojho have to cover different distances to reach their school but they take the same time to reach the school. What can you say about their speed?

If Boojho covers a certain distance in one hour and Paheli covers the same distance in two hours, who travels at a higher speed?

A spaceship travels 36,000 km in one hour. Express its speed in km/s.

When an electric current flows through a copper wire AB as shown in the following figure, the wire

Choose the statement which is not correct in the case of an electric fuse.

Three bulbs A, B, C are connected in a circuit as shown in the following figure. When the switch is ‘ON’

Name the device used these days in place of electric fuses in electrical circuits.

Our body is a ______ of electricity.

In an electric circuit a fuse is a ______ ______ to prevent possible fire.

Draw the symbols of the following circuit components.

Switch in off position

A man digging the ground near a water body found that the soil was moist. As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called

State whether the following statement is True or False. If false, give the correct statement.

Year 2003 was observed as the International Year of Freshwater

What is groundwater?

Which of the following serve as green lungs?

Name two inorganic impurities present in sewage.

Name two alternative arrangements for sewage disposal where there is no sewerage system.

What are the different types of inorganic and organic impurities generally present in sewage?

The terms sewage, sewers and sewerage are interlinked with each other. Can you explain, how?

What are villi?

State similarities between the laboratory thermometer and the clinical thermometer.