Question

1. Which of the following completes the given sequence? Shearing→?→Sorng (1)
a. Carding
b. Spinning
c. Scouring
d. Weaving
2. Paheli wanted to buy a gift made of animal fibre obtained without killing the animal. Which of the following
would be the right gift for her to buy?
a. Woollen shawl
b. Silk scarf
c. Leather jacket
d. None of these
3. A change in which a substance undergoes changes in its physical properties is called a
a. Physical change
b. Chemical change
c. Biological change
d. None of these
(1)
(1)
4. Farmers often use the technique of ‘selective breeding’ in order to obtain cows that give high yields of milk. Which of the following describes this technique?
Cows that produce a lot of milk are ________________________ (1)
a. Chosen to be milked.
b. Allowed to produce offspring.
c. Put on a special diet to produce good quality milk.
d. Kept separately from the cows that are not producing good quality milk.
5. Silkworms secrete fibre made of (1)
a. Fat
b. Cellulose
c. Protein
d. Nylon
6. Which of the following will be observed if an apple slice is left exposed to air? (1)
a. It under goes oxidation and become brown in colour
b. Appearance of brown colour on the surface of apple slice is caused by a chemical reaction between air and
enzymes
c. Both the above are correct
d. None of these

Answer 1

Answer:

1)Scouring

2)Woolen shawl

3)None of this.

4)Chosen the milk

5)Protein

6)Both the above are correct.