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Byju's Answer

Standard IX

Biology

Ecosystem

Assertion: Pl...

Question

Assertion: Plastic being light in weight and easy to handle is used as a substitute for glass and metal.
Reason: We should avoid plastics as far as possible.

Both assertion and reason are correct and the reason is the correct explanation of assertion.

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Both assertion and reason are correct, but the reason is not the correct explanation of assertion.

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The assertion is correct but the reason is incorrect.

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The assertion is incorrect but the reason is correct.

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Solution

The correct option is B
Both assertion and reason are correct, but the reason is not the correct explanation of assertion.

Plastics are used as a substitute for glass and metal because they are lightweight, strong, ductile, and poor conductors of heat and electricity. They resist corrosion and are resistant to many chemicals.

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Similar questions

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

.

Reason:

CaO

formed by decomposition of

{CaCO}_{3}

reacts with

{SiO}_{2}

to form slag.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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Assertion: Plastic being light in weight and easy to handle is used as a substitute for glass and metal. Reason: We should avoid plastics as far as possible.

Assertion: Plastic being light in weight and easy to handle is used as a substitute for glass and metal.
Reason: We should avoid plastics as far as possible.