NSO Level 1- Science Olympiad (SOF) Class 7: Questions 278 - 282 of 593

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Question number: 278

» Physical and Chemical Changes

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MCQ▾

Question

The ability or inability of a matter to undergo change that alters the composition of the matter is due to which of the following characteristic property?

Choices

Choice (4) Response

a.

Chemical change

b.

Physical property

c.

Chemical property.

d.

Physical change

Question number: 279

» Physical and Chemical Changes

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MCQ▾

Question

Which of the following change is involved in the process of changing color of an apple slice to brown?

Image of the changing color of an apple

Image of the Changing Color of an Apple

Image of the changing color of an apple

Choices

Choice (4) Response

a.

No change

b.

Physical change

c.

Chemical change

d.

Biological change

Question number: 280

» Acids, Bases and Salts

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MCQ▾

Question

Vanilla is an ________ indicator.

Choose the correct option which correctly fills the blank.

Choices

Choice (4) Response

a.

Synthetic Indicator

b.

Olfactory Indicator

c.

Universal Indicator

d.

Visible Indicator

Question number: 281

» Fibre to Fabric

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Match List-Ⅰ List-Ⅱ▾

Question

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

List-Ⅰ (Material) List-Ⅱ (Smell When Burnt)

(A)

Silk

(i)

Burning Hair.

(B)

Nylon

(ii)

Burning Plastic.

(C)

Cotton

(iii)

Burning Paper.

Choices

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

a.

  • (i)
  • (iii)
  • (ii)

b.

  • (iii)
  • (ii)
  • (i)

c.

  • (i)
  • (ii)
  • (iii)

d.

All of the above

Question number: 282

» Acids, Bases and Salts

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MCQ▾

Question

An experiment is performed in which china rose is used as an indicator with test solution being lime juice. The result shows change in color. Which of the following color is observed?

Choices

Choice (4) Response

a.

Pink Color

b.

Magenta

c.

Colorless

d.

Green Color

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