Question

Choose the correct option:
1. Which one of the following is not a thermosetting plastic?
Bakelite
Melamine
Polyvinyl chloride
2. Which of the following is known as artificial silk?
Nylon
Rayon
Polyester
Silk
3. Which of the following fibre has highest tensile strength?
Nylon
Rayon
Cotton
Silk
4. Thermoplastics do not have their monomers arranged in a three dimensional cross linked structure.
True
False
5. The effect of heat on plastic does not depend on the type of plastic.
True
False
6. Kharif crops like paddy , maize grow well during June - October.
True
False
7. Frictional force is a non-contact force.
True
False
8. Oil is used to reduce the friction on door hinges
True
False
9. Seed drill is used for
harvesting
cleaning the seeds
sowing
weeding
10. Compost is a _________
manure
fertilizer
pesticide
weedicide
11. Which of the following can not be identified as living or non living organism
Bacteria
Fungi
Virus
Protozoa
12. The status of algae in the aquatic food chain is-
consumers
producers
host
decomposers​

Answer 1

Which one of the following is not a thermosetting plastic?

Bakelite

Melamine

Polyvinyl chloride- answer

2. Which of the following is known as artificial silk?

Nylon

Rayon- answer

Polyester

Silk

3. Which of the following fibre has highest tensile strength?

Nylon- answer

Rayon

Cotton

Silk

4. Thermoplastics do not have their monomers arranged in a three dimensional cross linked structure.

True- answer

False

6. Kharif crops like paddy , maize grow well during June - October.

True- answer

False

7. Frictional force is a non-contact force.

True

False- answer

8. Oil is used to reduce the friction on door hinges

True- answer

False

9. Seed drill is used for

harvesting

cleaning the seeds

sowing- answer

weeding

10. Compost is a _________

manure- answer

fertilizer

pesticide

weedicide

11. Which of the following can not be identified as living or non living organism

Bacteria

Fungi

Virus- answer

Protozoa

12. The status of algae in the aquatic food chain is-

consumers

producers- answer

host

decomposers​

hope this helps.