General Science 5th Class Chapter 10 Technology in Everyday Life Solved Exercise

General Science

5th Class

Chapter 10

Technology in Everyday Life

Questions

1. Encircle the correct option.

i. We check the horizontal surface level by using a:

a. plumb line        b. metre rule        c. spirit level        d. triangle

ii. What does a mason use to keep a wall vertical?

a. Metre rule        b. Spirit level        c. Triangle        d. Plumb line

iii. Saline water is used for:

a. cleaning wounds        b. drinking by patients

c. washing hands        d. taking a bath

iv. Sterilized gauze is used:

a. for checking blood pressure        b. as bandage on wound

c. for finding the body temperature        d. for cleaning workplace

v. The emergency phone call number is:

a. 2211        b. 1133        c. 1122        d. 0911

2. Write short answers.

i. What do you need to make a model of a footbridge?

Ans.

To make a model of foot bridge we need skewer, thread, glue. wood, planes, nail and paper.

ii. What is the difference between the functions of spirit level and plumb line?

Ans.

Spirit Level:

Spirit level is used by carpenter, masons frame makers. Spirit level is used to check whether a surface is horizontal.

Plumb Line:

Plumb line is used to check the straight level of flag pole. Masons used it to construct and check the erect direction of wall.

iii. What is an LED?

Ans.

LEDs are the tiny light emitting bulbs. When a small voltage of 2 to 3 volts is applied across and LED, it starts glowing. Lights of different colours are emitted by different LEDs.

iv. You have to install a picture frame on the wall. How can it be kept straight horizontally as well as vertically?

Ans.

When we want to install a picture frame on the wall. We should used spirit level and plumb line, it will keep it straight horizontally as well as vertically.

v. What is meant by first aid?

Ans.

First aid is a temporary care given to a person who has got sudden illness or injury.