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Class 10 Exam  >  Class 10 Tests  >  Science Class 10  >  Assertion & Reason Test: Metals & Non-metals - Class 10 MCQ

Assertion & Reason Test: Metals & Non-metals - Class 10 MCQ


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10 Questions MCQ Test Science Class 10 - Assertion & Reason Test: Metals & Non-metals

Assertion & Reason Test: Metals & Non-metals for Class 10 2024 is part of Science Class 10 preparation. The Assertion & Reason Test: Metals & Non-metals questions and answers have been prepared according to the Class 10 exam syllabus.The Assertion & Reason Test: Metals & Non-metals MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Assertion & Reason Test: Metals & Non-metals below.
Solutions of Assertion & Reason Test: Metals & Non-metals questions in English are available as part of our Science Class 10 for Class 10 & Assertion & Reason Test: Metals & Non-metals solutions in Hindi for Science Class 10 course. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free. Attempt Assertion & Reason Test: Metals & Non-metals | 10 questions in 20 minutes | Mock test for Class 10 preparation | Free important questions MCQ to study Science Class 10 for Class 10 Exam | Download free PDF with solutions
Assertion & Reason Test: Metals & Non-metals - Question 1
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:

Assertion (A): When a piece of copper metal is added to dilute sulphuric acid, the solution turns blue.

Reason (R): Copper reacts with dilute sulphuric acid to form blue copper (II) sulphate solution.

Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 1

When a piece of copper metal is added to dilute sulphuric acid, then it shows no reaction at normal temperature. It is because, copper reacts only with heated sulphuric ac to form blue copper (W) sulphate solution and reason is  
false as copper cannot displace hydrogen , as it is less reactive than it

Assertion & Reason Test: Metals & Non-metals - Question 2
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
Assertion (A): Metals are sonorous.
Reason (R): They are generally brittle in the solid state; they break into pieces when hammered.

Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 2

Metals are sonorous, malleable and ductile while non-metals are brittle.

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Assertion & Reason Test: Metals & Non-metals - Question 3
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
Assertion (A): Gas bubbles are observed when sodium carbonate is added to dilute hydrochloric acid.
Reason (R): Carbon dioxide is given off in the reaction.

Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 3

Gas bubbles are observed when sodium carbonate is added to dilute hydrochloric acid as CO2 gas is released.

Assertion & Reason Test: Metals & Non-metals - Question 4
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:

Assertion (A): In alumino thermite process, the metals like iron melts due to the heat evolved in the reaction.

Reason (R): The reaction is:

Fe2O3 + 2Al → Al2O3 + 2Fe
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 4

Large amount of heat is evolved which melts iron and can be used for welding.

Assertion & Reason Test: Metals & Non-metals - Question 5
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:

Assertion (A): Usually the sulphide ore is converted to oxide before reduction.

Reason (R): Reduction of oxides occurs easier.
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 5

Usually the sulphide ore is converted to oxide before reduction as oxides are easier to reduce.

Assertion & Reason Test: Metals & Non-metals - Question 6
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
Assertion (A): A mineral is called ore, when metal is extracted from it conveniently and economically.

Reason (R): All ores are minerals but all minerals are not ores.
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 6

Minerals are naturally occurring chemical substances in the earth’s crust obtained by mining. But a mineral is called an ore only when the metal can be extracted from it conveniently and economically. Thus, all ores are minerals but all minerals are not ores.

Assertion & Reason Test: Metals & Non-metals - Question 7
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
Assertion (A): While the extraction of copper, one of the steps involved is

Cu2S + 2Cu2 O → 6Cu + SO2

Reason (R): In this reaction Cu2S is the reducing agent whereas Cu2O is the oxidising agent.
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 7

The reaction shown is a redox reaction where Cu₂S (copper(I) sulfide) is being oxidized to copper metal (Cu), and Cu₂O (copper(I) oxide) is being reduced to copper metal (Cu).

  • Cu₂S is the reducing agent because it loses sulfur and gains oxygen in the form of Cu₂O.
  • Cu₂O is the oxidizing agent because it accepts electrons from Cu₂S and gets reduced to copper metal.
Assertion & Reason Test: Metals & Non-metals - Question 8
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:
Assertion (A): In the metallurgy of Al, purified Al2O3 is mixed with Na3AlF6 or CaF2.

Reason (R): It lowers the melting point of the mixture and brings conductivity.
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 8

In the metallurgy of aluminium, purified Al2O3 is mixed with Na3AlF6 or CaF2 which lowers the melting point of the mixture and brings conductivity.

Assertion & Reason Test: Metals & Non-metals - Question 9
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:

Assertion: Different metals have different reactivities with water and dilute acids.

Reason: Reactivity of a metal depends on its position in the reactivity series.
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 9

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A). The metals placed at the top of the series are most reactive.

Assertion & Reason Test: Metals & Non-metals - Question 10
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R).
Mark the correct choice as:

Assertion (A) : Highly reactive metals are obtained by electrolytic reduction.
Reason (R) : In the electrolytic reduction, metal is deposited at the cathode.
Detailed Solution for Assertion & Reason Test: Metals & Non-metals - Question 10

- Highly reactive metals, like sodium and potassium, are extracted through electrolytic reduction due to their reactivity, which prevents reduction by chemical means.
- In electrolytic reduction, metals are deposited at the cathode when an electric current passes through an ionic compound.
- Both statements are true: electrolytic reduction is used for highly reactive metals, and deposition occurs at the cathode.
- However, the reason does not explain why electrolytic reduction is specifically necessary for highly reactive metals, making the correct choice B.

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