NSO Level 1- Science Olympiad (SOF) Class 10: Questions 578 - 583 of 986

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Question number: 578

» Metals and Non - Metals

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MCQ▾

Question

In 18 carats gold, percentage of mixed pure gold and other metal is

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 579

» Acids, Bases and Salts

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MCQ▾

Question

A drop of liquid sample was put on the pH paper. The colour of the pH paper turned Orange. The liquid sample could be that of

Choices

Choice (4)Response

a.

Distilled water

b.

Lemon juice

c.

Dilute hydrochloric acid

d.

Ethanoic acid

Question number: 580

» Magnetic Effects of Electric Current

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MCQ▾

Question

Which of the following is not true?

Choices

Choice (4)Response

a.

Magnetic field inside solenoid is uniform

b.

To find the direction of Magnetic field, Right Thumb Rule is used

c.

Magnetic field has magnitude nut not direction.

d.

All of the above

Question number: 581

» Acids, Bases and Salts

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MCQ▾

Question

When is added to Solution

Choices

Choice (4)Response

a.

Hydrogen is evolved

b.

Oxygen is evolved

c.

No Action takes places

d.

Water is produced

Question number: 582

» Magnetic Effects of Electric Current

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MCQ▾

Question

A circular coil and a bar magnet recede from each other with the same velocity. Then,

Choices

Choice (4)Response

a.

An emf will be induced in the magnet

b.

There will be no induced emf in the coil

c.

There will be an induced emf in the coil

d.

Question does not provide sufficient data or is vague

Question number: 583

» Magnetic Effects of Electric Current

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MCQ▾

Question

Choose the correct option. Different ways to induce current in a coil is

(i) By keeping the magnet in a fixed position and moving the coil towards and away from the magnet

(ii) By pushing or pulling a bar magnet into or away from a coil

(iii) If a coil is moved rapidly between the two poles of a hours-shoe magnet, then an electrical current is induced in the coil

Choices

Choice (4)Response

a.

(i) and (iii)

b.

(ii) and (iii)

c.

(i) and (ii)

d.

(i), (ii) and (iii)

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