Question

In the following
Questions, the Assertion and Reason have been put forward. Read 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) Assertion is true but the Reason is false.
(d) The statement of the Assertion is false but the Reason is true.
Assertion: Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas and it is displacement reaction.
Reason: Zinc reacts with oxygen to form zinc oxide.

Answer 1

Answer:

Assesrtion is true but Reason is false.

Explanation:

Zinc reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas is evolved. This is a single displacement reaction of a non-metal by a metal. The zinc will react with sulphuric acid forming zinc sulphate dissolved in solution and releasing hydrogen gas, this reaction does not take place because zinc reacts with oxygen. If zinc reacts with oxygen Zinc Oxide is formed.

I hope this helps you.

Answer 2

Answer:

Here, both the assertion and reason are true but the reason is not the correct explanation of the assertion.

The reaction of zinc with sulfuric acid is:
Zn (s) + H₂SO₄ (l) ↔ ZnSO₄ (s) + H₂ (g) ↑

The reaction of Zinc with oxygen yields zinc oxide which is a type of combustion reaction.
Zn (s) + O₂ (g) ↔ ZnO (s) + heat

Explanation:

Types of Chemical Reactions:

In chemistry, four types of reactions are well known:

1. Combination reaction/Synthesis reaction: In this type of reaction, two or more two reactions combine to form a single new product.
   A + B → AB
   E.g., 2Na(s) + Cl₂(g) ↔ NaCl(s)
2. Decomposition Reactions: This is just the reverse of combination reactions. In this type of reaction, a compound breaks down/decomposes into two or more products.
   AB → A + B
   E.g., CaCO₃ (s) ↔ CaO (s) + CO₂ (g)
3. Replacement Reactions: These are the reactions in which two or more elements react and one element replaces a similar element in the product compound.
   These can be of two forms:
   A + BC ↔ AB + C (Single replacement reaction)
   E.g., Mg(s) + Cu(NO₃)₂ (aq) ↔ Mg(NO₃)₂ (aq) + Cu(s)
   AB + CD ↔ AC + BD (Double replacement reaction)
   E.g., 2KI (aq) + Pb(NO₃)₂ ↔ 2KNO₃ (aq) + PbI₂ (aq)
4. Combustion reactions: In this type a substance reacts with oxygen, producing heat and light.
   Combustion reactions must involve oxygen as a reactant.
   E.g., 2H₂ (g) + O₂ (g) ↔ 2H₂O (l)

You can refer to the following links to learn more about types of chemical reactions:

Define various types of chemical reactions. Write one chemical equation for each type.
https://brainly.in/question/16753982

Types of chemical reactions and their definitions
https://brainly.in/question/4075639

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