Which of the following forms of energy is an example of a primary energy source?

Sun
Biofuels
Liquified Petroleum Gas (LPG)
Diesel
Sun  The Sun is the primary source of energy for Earth`s climate system is the first of seven Essential Principles of Climate Sciences. Principle 1 sets the stage for understanding Earth`s climate system and energy balance. The Sun warms the planet, drives the hydrologic cycle, and makes life on Earth possible. Each second, more than four million tonnes of matter are converted into energy within the Sun`s core, producing neutrinos and solar radiation.

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Vitamin C is soluble in
A. fat
B. water
C. ethers
D. phenols
The density of air in the atmosphere is
A. uniform
B. not uniform
C. zero
D. none of above
In the body, the weight of blood is about
A. 1/12th of body
B. 1/5th of body
C. 1/8th of body
D. 1/4th of body
Which substance is present in fuel?
A. Iron
B. Gold
C. Carbon
D. Copper
The energy stored in coal is
A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
A human breath per minute is
A. 16-30 times
B. 16-20 times
C. 15-20 times
D. 15-18 times
Symbol of Copper is
A. Ca
B. Cl
C. Co
D. Cu

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