Target Railways- RRB NTPC, RRB JE, SSC CGL – Physics Quiz (Set-2)

Q1.Energy stored in a coal is
(a)kinetic energy
(b)potential energy
(c)chemical energy
(d)nuclear energy

Q2.A temperature rise in environment that disturbs life is called
(a)water pollution
(b)nuclear pollution
(c)thermal pollution
(d)traffic pollution

Q3.Energy use in solar cookers, solar distillation plants, solar power plants is known as
(a)chemical energy
(b)solar energy
(c)thermal energy
(d)nuclear energy

Q4.One horse power is equal to
(a)790 watts
(b)700 watts
(c)720 watts
(d)746 watts

Q5.Fission and fusion are called
(a)molecular reactions
(b)potential reactions
(c)nuclear reactions
(d)heat reactions

Q6.Change in quality of environment that can be harmful and unpleasant for living things is called
(a)Energy
(b)Pollution
(c)Revolution
(d)Transformation

Q7.Energy possessed by a body due to its position is called its
(a) heat energy
(b) kinetic energy
(c) potential energy
(d) chemical energy

Q8. During inter conversion of energy from one form to other forms, total energy at any time remains,
(a) constant
(b) zero
(c) increasing
(d) decreasing

Q9. A moving car possesses
(a)sound energy
(b)mechanical energy
(c)heat energy
(d)chemical energy

Q10.What happens to its potential energy when an object is taken to high altitude
(a)Its potential energy increases
(b)Its potential energy decreases
(c)Its potential energy remain same
(d) None of the above

Ans.1(c)
Chemical energy is stored in coal. Coal is a Hydrocarbon. When coal is burnt its chemical energy comes out in the form of light and heat energy which result in formation of vapors of Carbon Dioxide(CO2) and water(H2O).

Ans.2(c)
Thermal pollution, the artificial warming of a body of water because of industrial waste or runoff from streets and parking lots, is becoming a common threat to the environment

Ans.3(b)
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.

Ans.4(d)
A power level of 1 hp is approximately equivalent to 746 watt s (W).

Ans.5(c)
The energy harnessed in nuclei is released in nuclear reactions. Fission is the splitting of a heavy nucleus into lighter nuclei and fusion is the combining of nuclei to form a bigger and heavier nucleus. Fission and fusion are called nuclear reactions

Ans.6(b)
A pollutant is a substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource.

Ans.7(c)
Potential energy is the energy possessed by a stationary body.

Ans.8(a)
During interconversion of energy from one form to other forms, total energy at any time remains constant.

Ans.9(b)
A moving baseball possesses mechanical energy due to both its high speed (kinetic energy) and its vertical position above the ground (gravitational potential energy).

Ans.10 (a)
When an object is taken to high altitude Its potential energy increases.

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