Which among the following waves is used for communication by artificial satellites?

0

Which among the following waves is used for communication by artificial satellites? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series

0

Rimi

Asked: December 30, 2021In: Chemistry

Which among the following types of coal produces most heat per unit?

0

Which among the following types of coal produces most heat per unit? (1) Coal (2) Lignite (3) Anthracite (4) Pit

0

Rimi

Asked: December 30, 2021In: Chemistry

When a body falls from an aeroplane, there is increase in its –

0

When a body falls from an aeroplane, there is increase in its – (1) Kinetic encrgy (2) Mass (3) Acceleration (4) Potential energy

0

Rimi

Asked: December 30, 2021In: Chemistry

Water is not suitable as a calorimetric substance because it –

0

Water is not suitable as a calorimetric substance because it – (1) has high specific heat (2) is a good conductor (3) has high boiling point (4) low latent heat of vaporization

0

Rimi

Asked: December 30, 2021In: Chemistry

Minimum numbers of uncqual vectors which can give zero resultant are –

0

Minimum numbers of uncqual vectors which can give zero resultant are – (1) Two (2) Three (3) Four (4) More than four

0

Rimi

Asked: December 30, 2021In: Chemistry

Two rods, one of copper and other of steel, experience the same up thrust when placed in water. Thus, both have –

0

Two rods, one of copper and other of steel, experience the same up thrust when placed in water. Thus, both have – (1) cqual volume (2) equal weight (3) equal density (4) equal mass