NSO Level 1- Science Olympiad (SOF) Class 8: Questions 1030 - 1036 of 1175

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Question 1030

Question

MCQ▾

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 1031

Appeared in Year: 2012

Question

MCQ▾

Four experiment on rusting are shown below.

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 1032

Question

MCQ▾

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 1033

Question

MCQ▾

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 1034

Question

MCQ▾

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 1035

Question

MCQ▾

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 1036

Appeared in Year: 2012

Question

Assertion-Reason▾

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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