Class 8 science chapter 1 question 88-92

88. Question
Which of the following system of irrigation is preferred for the uneven
land?
A. chain pump irrigation system
B. drip irrigation system
C. sprinkler irrigation system
D. river irrigation system
Answer
Sprinkler system is more suitable for uneven land where sufϐicient
water is not available.
89. Question
The two crops which are not grown by sowing their seeds directly into
the soil in large ϐields are:
(A) Peas (B) Tomatoes
(C) Chillies (D) Maize
A. A and B
B. B and C
C. A and C
D. only C
Answer
The two crops which are not grown by sowing their seeds directly into
the soil in large ϐields are tomatoes and chillies.
90. Question
The best Technique of Watering the fruit plants and Tree is:
A. chain pump system
B. sprinkler system
C. moat (pulley system)
D. drip system
Answer
In this system, there is a network of narrow pipes with small holes, in
the ϐields. When water ϐlows through these pipes, water falls drop by
drop just at the position of the roots. So, it is called drip system. Water
is not wasted at all. It is the best technique for watering fruit plants,
gardens and trees.
Questions Based on High Order Thinking Skills (HOTS)
91. Question
Arrange the following practices in the correct order as they appear in
the sugarcane crop production:
Sending crop to sugar factory; Irrigation; Harvesting; Sowing;
Preparation of soil; Ploughing the ϐield; Manuring.
Answer
The correct order is : Ploughing the ϐield ; Preparation of soil, Sowing;
Manuring; Irrigation; Harvesting; Sending crop to sugar factory
92. Question
Match items in column A with those in column B:
Column A
(i) Kharif crops
(ii) Rabi crops
(iii) Chemical fertilizers
(iv) Organic manure
Column B
(a) Food for cattle
(b) Urea and super Phosphate
(c) Animal excreta, cow-dung, and plant waste
(d) Wheat, gram, pea
(e) Paddy and maize
Answer
(i) e (ii) d (iii) b (iv) c

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