NSO Level 1- Science Olympiad (SOF) Class 10: Questions 766 - 770 of 986

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Question number: 766

» Our Environment and Its Management

Edit
MCQ▾

Question

Which of the following is best method from environment point of view?

Choices

Choice (4) Response

a.

Recycle

b.

Reduce

c.

Reuse

d.

All a. , b. and c. are correct

Question number: 767

» Metals and Non - Metals

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: Metals react with a dilute acid to form a metal salt and hydrogen gas.

Statement 2: Non-metals do not react with dilute acids.

Choices

Choice (4) Response

a.

Statements 1 and 2 are true.

b.

Only Statement 2 is true.

c.

Only Statement 1 is true.

d.

Statements 1 and 2 are wrong.

Question number: 768

» Sources of Energy

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MCQ▾

Question

Disadvantages of fossil fuels are

Choices

Choice (4) Response

a.

Renewable sources of energy

b.

Reserves in the earth are unlimited

c.

No smoke produced

d.

None of the above

Question number: 769

» Sources of Energy

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match column I and column II and select the correct option from the codes given below.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Fission

(i)

Methane

(B)

Rocket fuel

(ii)

Combine two small nuclei to form a larger nuclei

(C)

Biogas

(iii)

Heavily nuclei into two small nuclei

(D)

Fusion

(iv)

Liquid hydrogen

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iv)
  • (iii)
  • (ii)
  • (i)

b.

  • (iv)
  • (iii)
  • (i)
  • (ii)

c.

  • (iii)
  • (iv)
  • (i)
  • (ii)

d.

  • (ii)
  • (i)
  • (iii)
  • (iv)

Question number: 770

» Magnetic Effects of Electric Current

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MCQ▾

Question

A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in figure. The direction of magnetic field at a point will be north to south.

The direction of magnetic field

The Direction of Magnetic Field

The direction of magnetic field

Choices

Choice (4) Response

a.

At a point located in the plane of the paper on the north side of the wire

b.

At a point located in the plane of the paper on the south side of the wire

c.

Directly above the wire

d.

Directly below the wire