UPSC Government Jobs Exams

To start your loaded trolley bag, you
exert more force than when it is
moving. This is an example of
(a) first law of thermodynamics
(b) second law of thermodynamics
(c) Newton's second law of motion
(d) Newton's first law of motion

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ans d newton's first law
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UPSC Other Question

A thin pin of iron can be made to
float on water (drinking) in a bowl.
This phenomenon is due to the
(a) surface tension of water
(b) viscous nature of water
(c) presence of ionic bonds in
water molecules
(d) presence of covalent bonds in
water molecules
You placed a car in an open parking
area in a summer day. After a few
hours, you noticed that the heat
is trapped inside the car. This
phenomenon is known as
(a) ozone depletion
(b) greenhouse effect
(c) solar effect
(d) cosmic ray impingement