Everyday Science
Which of the following options is matched INCORRECTLY?
Fuel cell – Chemical energy is converted into Electrical energy
Loud Speaker – Sound energy is converted into Electrical energy
Photovoltaic cell – Light energy is converted into Electrical energy
Electric motor – Electrical energy is converted into Mechanical Energy
Loud Speaker – Sound energy is converted into Electrical energy
Loud speaker – electric energy is converted into sound energy
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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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