1)

The rating for a fuse used in a household electric circuit is provided on the basis of :

SSC CGL 2020

A)

Resistance

B)

Current

C)

Power

D)

Voltage

2)

What is the velocity of sound in air?

SSC CGL 2020

A)

220 m/sec

B)

343 m/sec

C)

232 m/sec

D)

110 m/sec

3)

'Torr' is a unit of _______.

SSC CGL 2020

A)

pressure

B)

force

C)

power

D)

energy

4)

Which among the following is NOT an insulator?

SSC CGL 2020

A)

Mercury

B)

Dry Paper

C)

Glass

D)

Ebonite

5)

The power of a lens is -2.0 D. Here 'D' stands for:

SSC CGL 2020

A)

dilation

B)

distance

C)

dioptre

D)

degree

6)

Which among the following has its refractive index closest to that of crown glass?

SSC CGL 2020

A)

Sapphire

B)

Ruby

C)

Diamond

D)

Canada balsam

7)

Which among the following is a cation?

SSC CGL 2020

A)

Ammonium

B)

Iodide

C)

Fluoride

D)

Chloride

8)

Ozone at the higher level of the atmosphere is a product of ______ acting on oxygen molecules.

SSC CGL 2020

A)

X-rays

B)

UV radiation

C)

IR radiation

D)

gamma rays

9)

How many degrees does the Earth rotate about its own axis in one hour?

SSC CGL 2020

A)

15

B)

20

C)

24

D)

10

10)

The first electron shell which is the nearest to the nucleus never holds more than 'n' electrons, where 'n' is equal to:

SSC CGL 2020

A)

6

B)

2

C)

4

D)

8