Page 1 - 4 -HOME ASSIGNMENT 2- (PRACTICE WORKSHEET)

SAI International School
Class – VII

Subject – Chemistry
Topic – Animal Fibres
Sub-Topic – Life cycle of Silk moth, Processing of Silk

PRACTICE WORKSHEET 2
General Instructions:

(i) All MCQ based questions, you must choose only one option.
(ii) (ii) For Assertion & Reasoning question choose the option appropriate.

QUESTIONS Marks SKIL
Q. No.

1 Rearing and breading sheep is called 1 R
a) Shearing b) Sheep farming c) Scouring d)

Carding
2 Wool is composed of 1 K
a) Carbohydrates b) Proteins c) vitamins
d) minerals
3 Larvae shed their skin in four times. This 1 K
process is called as
a) Moulting. b) Shedding c) Reeling
d) Filature

In the following questions 4 to 6, a statements
of Assertion (A) is followed by a statement of
reason
Mark the correct choice a) both assertion and
reason R are true
And reason (R) is the correct explanation of
assertion(A)
b) Both assertion (A) and reason are true but
reason is not correct explanation of assertion
(A).
c) Assertion (A) is true but reason is false.
d) Assertion (A) is false and reason is true.
e) Both assertion (A) and reason are false.

4. Assertion: Shearing is done in summer 1 K&A
season.
Reason: Woollen coat can grow again before
commencement of winter season.

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