Question

7.Directions: In the following questions, the Assertions (A) and Reason(s) (R) have been put

forward. Read both the statements carefully and choose the correct alternative from the

following:
(A) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the

Assertion.

(B) The Assertion and the Reason are correct but the Reason is not the correct explanation of the

Assertion.

(C) Our Assertion is true but the Reason is false.

(D) The statement of the Assertion is false but the Reason is true.

(E) Both the statements are false.

(1) Assertion : combustion reactions are also called as a exothermic oxidation reactions

Reason:In these reactions Oxygen is added and heat energy is released.

(2) Assertion:Colour of copper sulphate does not change when an iron nail is dipped in it.

Reason:Iron is more reactive than copper and it displaces it.

(3) Assertion:Nitrogen is flushed in potato chips packet to preserve acidity of potato chips.

Reason:Nitrogen prevents contact of chips to air and thus prevent oxidation.

(4)Assertion:Rusting of iron is a chemical change .

Reason :The chemical properties of hydrated iron oxide are different from iron and oxygen​

Answer 1

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1) Option A

2) Option D

3) Option D

4) Option C

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Answer 2

Answer:

I think it's the answers

Explanation:

I hope it is helpful to you later on