ChemistryEveryday Science
Liberation of heat during chemical reaction is termed as
Exothermic reactions
Endothermic reactions
Isothermic reactions
Photochemical reactions
Exothermic reactions
A chemical reaction in which heat or energy is liberated is called an exothermic reaction.
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Vitamin C is soluble inA. 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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