NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1030 - 1036 of 1076

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Question number: 1030

» Chemical Effects of Electric Current

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MCQ▾

Question

During electrolysis of water, hydrogen gas is deposited in the

Choices

Choice (4) Response

a.

Anode

b.

Positive terminal

c.

Cathode

d.

All of the above

Question number: 1031

» Metals and Non-Metals

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Appeared in Year: 2012

MCQ▾

Question

Four experiment on rusting are shown below.

Image shows Four Experiment on Rusting

Image Shows Four Experiment on Rusting

Image shows Four Experiment on Rusting

Which two experiment can be used to show that air is needed for iron to rust?

Choices

Choice (4) Response

a.

1 and 3

b.

2 and 3

c.

2 and 4

d.

1 and 4

Question number: 1032

» Some Natural Phenomena

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MCQ▾

Question

An earth quake marked 6 on the Richter scale has an intensity ——-times than that of 4.

Choices

Choice (4) Response

a.

1000 times

b.

Times

c.

2 times

d.

100 times

Question number: 1033

» Chemical Effects of Electric Current

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MCQ▾

Question

The device used to test the presence of electric current in a circuit is

Choices

Choice (4) Response

a.

Spanner

b.

Allen key

c.

Screw driver

d.

Tester

Question number: 1034

» Chemical Effects of Electric Current

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MCQ▾

Question

In the electrolysis of water, the gases produced are

Choices

Choice (4) Response

a.

Oxygen and hydrogen

b.

Oxygen and nitrogen

c.

Hydrogen and nitrogen

d.

Oxygen and carbon dioxide

Question number: 1035

» Chemical Effects of Electric Current

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MCQ▾

Question

In a solution, the conduction of electricity is caused by

Choices

Choice (4) Response

a.

Atoms

b.

Ions

c.

Molecules

d.

None of the above

Question number: 1036

» Reproduction in Animals

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Appeared in Year: 2012

Assertion-Reason▾

Question

Assertion (Ꭺ)

Aquatic animals produce large number of eggs and sperms necessary to ensure external fertilization.

Reason (Ꭱ)

The egg swims in water with the help of cilia, and fertilize the sperms.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

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