All planets move around the sun in elliptical orbits, with the sun being at rest at one focus of the orbit.

Answer: Option D

Explanation:

Red, Green, Blue are primary colours. All the colours can be produced by them by mixing in different proportions. Interesting :)

Answer: Option C

Answer: Option D

Explanation:

John Dalton discovered Atom in 1808,

Madam Curie discovered Radium in 1898,

James Chadwick discovered Neutron in 1932,

Rutherford discovered Proton in 1919.

Answer: Option B

Explanation:

henry is unit of Magnetic Induction,

volt is unit of Potential Difference,

ohm is unit of Electric Resistance.

Answer: Option D

Explanation:

unit of Momentum is kilogram meter per second,

unit of Moment of Inertia is kilogram square meter,

unit of frequency is Hertz.