NSO Level 1- Science Olympiad (SOF) Class 10: Questions 783 - 787 of 986

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Question number: 783

» Our Environment and Its Management

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MCQ▾

Question

Organisms of a higher trophic level which feed on several types of organisms belonging to a lower trophic level constitute the

Choices

Choice (4) Response

a.

Ecosystem

b.

Food web

c.

Food chain

d.

Ecological pyramid

Question number: 784

» Our Environment and Its Management

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MCQ▾

Question

In the following groups of materials, which group contains only non-biodegradable items?

(i) Wood, paper, leather

(ii) Polythene, detergent, PVC

(iii) Plastic, detergent, grass

(iv) Plastic, Bakelite, DOT

Choices

Choice (4) Response

a.

(ii) and (iv)

b.

(iii)

c.

(i) and (iii)

d.

(iv)

Question number: 785

» Magnetic Effects of Electric Current

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MCQ▾

Question

Which of the following is not the correct property of the magnetic field lines?

Choices

Choice (4) Response

a.

Magnetic field lines originate from North Pole and end at South Pole

b.

Magnetic field lines come closer to one another near the poles of magnet but widely separated at other places

c.

Magnetic field lines intersect each other

d.

None of the above

Question number: 786

» Chemical Reactions and Equation

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MCQ▾

Question

Which of the following reactions will not occur?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 787

» Metals and Non - Metals

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MCQ▾

Question

In addition to manganese, Duralumin also contains

Choices

Choice (4) Response

a.

Zinc

b.

Tin

c.

Aluminum

d.

Lead