Physics
Specific gravity is defined as the ratio of

Density of water at 4°C to the density of the substance
Density of the substance to the density of water
Density of the substance to the density of water at 0°C
Density of the substance to the density of water at 4°C

ANSWER DOWNLOAD EXAMIANS APP

Physics
X-rays region lies between

Visible and infra-red region
Gamma-rays and ultraviolet region
Ultraviolet and visible region
Short radio waves and long radio waves

ANSWER DOWNLOAD EXAMIANS APP

Physics
We always see the same face of the moon, because

It rotates at the same speed as the earth around the sun
It takes equal time for revolution around the earth and rotation on its own axis
It is smaller than the earth
It revolves on its axis in adirection opposite to that ofthe earth

ANSWER DOWNLOAD EXAMIANS APP