NSO Level 1- Science Olympiad (SOF) Class 10: Questions 718 - 722 of 986

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Question number: 718

» Carbon and Its Componds

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MCQ▾

Question

Ethanol reacts with Sodium Metal and produces

Choices

Choice (4) Response

a.

Ethane alcohol

b.

Sodium Ethoxide

c.

Ethane

d.

None of the above

Question number: 719

» Chemical Reactions and Equation

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MCQ▾

Question

Which of the following method is protected steel pipelines against Corrosion?

Choices

Choice (4) Response

a.

Painting

b.

Plating

c.

Corrosion Inhibitors

d.

All a. , b. and c. are correct

Question number: 720

» Chemical Reactions and Equation

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: Balancing chemical equations is the process of ensuring the conservation of matter

Statement 2: A chemical equation should also be balanced on both sides.

Choices

Choice (4) Response

a.

Statements 1 and 2 are true

b.

Only Statement 2 is true

c.

Statements 1 and 2 are false

d.

Only Statement 1 is true

Question number: 721

» Magnetic Effects of Electric Current

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MCQ▾

Question

Electrical generator is based on the principle of

Choices

Choice (4) Response

a.

Magnetic flux

b.

Electromagnetic induction

c.

Mutual induction

d.

Question does not provide sufficient data or is vague

Question number: 722

» Magnetic Effects of Electric Current

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MCQ▾

Question

In the arrangement shown in figure, there are two coils wound on a non-conducting cylindrical rod. Initially, the key is not inserted. Then the key is inserted and later removed. Then

The arrangement shown in figure

The Arrangement Shown in Figure

The arrangement shown in figure

Choices

Choice (4) Response

a.

There are momentary galvanometers deflections that die out shortly, the deflections are in the same direction

b.

There are momentary galvanometers deflections that die out shortly, the deflections are in opposite directions. Thus the galvanometer shows momentary deflections in opposite directions

c.

The deflection in the galvanometer remains zero throughout

d.

There is a momentary deflection in the galvanometer but it dies out shortly and there is no effect when the key is removed