NSO Level 1- Science Olympiad (SOF) Class 7: Questions 177 - 182 of 597

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Question number: 177

» Acids, Bases and Salts

Edit
MCQ▾

Question

Which of the following is a property of acid?

Image shows the acid

Image Shows the Acid

Choices

Choice (4)Response

a.

It tastes bitter.

b.

It turns red litmus paper to blue.

c.

It turns blue litmus paper to red.

d.

None of the above

Question number: 178

» Heat

Edit
MCQ▾

Question

Clinical thermometer has which of the following range of temperature?

Clinical thermometer

Clinical Thermometer

Choices

Choice (4)Response

a.

-10o C – 110o C

b.

10o C – 100o C

c.

42o C – 110o C

d.

35o – 42o C

Question number: 179

» Acids, Bases and Salts

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match the Column I & Column II by selecting the correct option?

List-Ⅰ (Column I)List-Ⅱ (Column II)

(A)

Salt

(i)

HCl

(B)

Base

(ii)

Baking Soda

(C)

Acid

(iii)

NH4Cl

Choices

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

a.

  • (iii)
  • (i)
  • (ii)

b.

  • (ii)
  • (iii)
  • (i)

c.

  • (iii)
  • (ii)
  • (i)

d.

All of the above

Question number: 180

» Acids, Bases and Salts

Edit
MCQ▾

Question

In a titration experiment, lime water turns green in presence of which of the following indicators?

Choices

Choice (4)Response

a.

Bromothymol Blue

b.

Methyl Orange

c.

China Rose

d.

Phenolphthalein

Question number: 181

» Physical and Chemical Changes

Edit
MCQ▾

Question

An iron rod is placed in blue solution of copper sulphate. What will be the changes in the color of the solution?

Figure of the copper sulphate

Figure of the Copper Sulphate

Choices

Choice (4)Response

a.

Red

b.

Blue

c.

Green

d.

Brown

Question number: 182

» Physical and Chemical Changes

Edit
MCQ▾

Question

Salt is obtained from sea water by the process of

Choices

Choice (4)Response

a.

Crystallization

b.

Amalgamation

c.

Neutralization

d.

Galvanization

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