Assertion Reason Questions for Class 8 Science Chapter 4 Materials – Metals and Non-Metals
Here we are providing assertion reason questions for class 8 science. In this article, we are covering Class 8 Science Chapter 4 Materials – Metals and Non-Metals.
Directions:
The question below consists of an assertion and a Reason. Use the following key to choose the appropriate answer.
A. If both assertion and reason are correct and reason is correct explanation of the assertion
B. If both assertion and reason are correct, but the reason is not the correct explanation of the assertion.
C. If assertion is correct, but reason is incorrect.
D. If assertion is incorrect, but reason is correct.
Q.1. Assertion: Gold and Platinum are noble metals.
Reason: Both are least reactive metals.
Q.2. Assertion: Silver is not used for making electrical cables.
Reason: Silver is the best conductor of electricity.
Q.3. Assertion: All metals are solid in nature at room temperature.
Reason: Mercury occurs in liquid state at room temperature.
Q.4. Assertion: Copper is used in making cooking utensils.
Reason: Copper is a good conductor of electricity.
Q.5. Assertion: Pure gold is mixed with copper or silver to make jewellery.
Reason: Pure gold is soft.
Q.6. Assertion: Stainless steel is used in making of surgical implements.
Reason: Stainless steel is resistant to corrosion.
Q.7. Assertion: Copper is used to make electric wires.
Reason: Copper has very low electrical resistance.
Q.8. Assertion: Bronze is used for making statues.
Reason: Bronze is an alloy of copper and tin.
Q.9. Assertion: The property of metals by virtue of which they can be drawn into wires is known as ductility.
Reason: Metals are good conductor of electricity but poor conductor of heat.
Q.10. Assertion: Metals are sonorous.
Reason: They are generally brittle in solid state.
Q.11. Assertion: Metals can be used for making bells
Reason: Metals are sonorous.
Q.12. Assertion: An alloy is a homogenous mixture of one or more metals, or a metal and a non-metal.
Reason: Alloys are resistant to corrosion.
