NSO Level 1- Science Olympiad (SOF) Class 7: Questions 280 - 284 of 699

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Question 280

Question MCQ▾

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

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Question 281

Question Match List-Ⅰ List-Ⅱ▾

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

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Question 282

Question MCQ▾

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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Question 283

Question MCQ▾

Light is absorbed by which of the following pigments for photosynthesis?

Choices

Choice (4)Response

a.

Anthocynin

b.

Pheophytin

c.

Chlorophyll

d.

Question does not provide sufficient data or is vague

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Question 284

Question MCQ▾

Why antacids are prescribed by doctors for problems related to hyperacidity?

Choices

Choice (4)Response

a.

Because it contains weak acid

b.

Because it contains base

c.

Because it contains strong acid

d.

None of the above

Edit