Hello Students are looking for Assertion and Reason Questions Class 8 Science Chapter 3 Synthetic Fibres And Plastics, If yes here we Net Explanations have given Assertion and Reason MCQ for 8th Class Science Chapter 3.
Solved CBSE Class 8 Science Chapter 3 Assertion and Reason Questions – Synthetic Fibres And Plastics. Here we (Net Explanations) working very hard to providing you with the Important Assertion Reason Questions for this Chapter.
Assertion and Reason Questions Class 8 Science Chapter 3 Synthetic Fibres and Plastics
1.) ASSERTION :we not wear synthetic clothes while working in the kitchen or a laboratory.
REASON : Synthetic fibre smelt on heating. If the clothes catch fire, it can be disastrous. The fabric melts and sticks to the body of the person wearing it.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans -option A
2.) ASSERTION : Plastic are used to store various kinds of material including many chemical.
REASON : metal do not react with water and air they are not corroded easily.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans: Option C
3.) ASSERTION: Nylon is a man made fibre.
REASON: It was made by man using natural raw material (from plant oranimal).
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option C
4.) ASSERTION : Electrical wires have plastic covering, and handles of screw drivers are made of plastic.
REASON :Plastic is very light, strong, durable and can be moulded into different shapes and sizes. Plastics are generally cheaper than metal they are widely used in industry and for household articles.
a) Assertion and reason both are correct statement and reason is correct explanation for
assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option B
5.) ASSERTION :Avoid the use of plastics as far as possible. Make use of bags made of cotton or jute when you go for shopping.
REASON : Plastic takes several years to decompose, it is not environment friendly. It causes environmental pollution. Besides, the burning process in the synthetic material is quite slow and it does not get completely burnt easily. In the process it releases lots of poisonous fumes into the atmosphere causing air pollution.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option A
6.) ASSERTION : The loosening of soil allow the roots to breathe easily.
REASON :The loosened soil helps in the growth of earthworms and microbes present in the soil. These organisms are friends of the farmer since they further turn and loosen the soil and add humus to it.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans-Option A
7.) ASSERTION: The soil needs to be turned and loosened.
REASON: Since only a few centimetres of the top layer of soil supports plant growth, turning and loosening of soil brings the nutrient-rich soil to the top so that plants can use these nutrients.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans-Option A
For more ⇒ CBSE Notes for Class 8 Science
For further update, follow our page ⇒ Net Explanations