NSO Level 1- Science Olympiad (SOF) Class 7: Questions 161 - 164 of 593

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Question number: 161

» Physical and Chemical Changes

Edit
MCQ▾

Question

If in a chemical reaction energy is given out, then it is called as which type of the reaction?

Figure of the heat energy

Figure of the Heat Energy

Figure of the heat energy

Choices

Choice (4) Response

a.

Exothermic reaction

b.

Displacement reaction

c.

Decomposition reaction

d.

Endothermic reaction

Question number: 162

» Heat

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match column I and column II by selecting the correct option.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Conduction convection radiation : Choice C

Conduction Convection Radiation: Choice C

Conduction convection radiation

(i)

Convection

(B)

Conduction convection radiation : Choice B

Conduction Convection Radiation: Choice B

Conduction convection radiation

(ii)

Conduction

(C)

Conduction convection radiation : Choice A

Conduction Convection Radiation: Choice A

Conduction convection radiation

(iii)

Radiation

Choices

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

a.

  • (i)
  • (iii)
  • (ii)

b.

  • (iii)
  • (i)
  • (ii)

c.

  • (iii)
  • (ii)
  • (i)

d.

All of the above

Question number: 163

» Fibre to Fabric

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MCQ▾

Question

Neeti buys a woolen shawl. She takes out a small strand of yarn and burns it. It smells like a burning plastic. What does it indicate about the wool?

Choices

Choice (4) Response

a.

It’s not a wool but is a silk

b.

It’s a synthetic wool

c.

It’s a pure wool

d.

It’s a cotton

Question number: 164

» Fibre to Fabric

Edit
MCQ▾

Question

World’s finest and warmest wool, with fibers one-fifth the thickness of a human hair. The wool is also called the “king of wools”. Name the animal from which this kind of wool is produced.

Figure showing the animal

Figure Showing the Animal

Figure showing the animal

Choices

Choice (4) Response

a.

Chiru

b.

Lama

c.

Angora

d.

Chinkara

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