The disadvantage of friction is that
(a) it causes wear and tear
(b) it can make machine parts heat up
(c) it can result in wastage of energy and fuel
(d) all of these

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Solution

(d) all of these
Friction can cause, wear and tear, heating up of machines and wastage of energy and fuel.

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The disadvantage of friction is that (a) it causes wear and tear (b) it can make machine parts heat up (c) it can result in wastage of energy and fuel (d) all of these

(d) all of theseFriction can cause, wear and tear, heating up of machines and wastage of energy and fuel.

The disadvantage of friction is that
(a) it causes wear and tear
(b) it can make machine parts heat up
(c) it can result in wastage of energy and fuel
(d) all of these

(d) all of these
Friction can cause, wear and tear, heating up of machines and wastage of energy and fuel.