NSO Level 1- Science Olympiad (SOF) Class 8: Questions 962 - 965 of 1076

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Question number: 962

» Chemical Effects of Electric Current

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MCQ▾

Question

Which of the following is not an application of an electrolytic cell?

Choices

Choice (4) Response

a.

Electro refining

b.

Electrification

c.

Electrolysis

d.

Electroplating

Question number: 963

» Some Natural Phenomena

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MCQ▾

Question

If you are standing in an open field and a thunderstorm occur suddenly you should sit on the ground in the shape of English capital letter N with head bent on knees. The reason behind such a saying is

Choices

Choice (4) Response

a.

This posture gives minimum height and Head bent on knees reduces the chances of pointed ends

b.

This posture gives minimum height

c.

Head bent on knees reduces the chances of pointed ends

d.

Question does not provide sufficient data or is vague

Question number: 964

» Force and Pressure

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Appeared in Year: 2012

MCQ▾

Question

A thin tube contains a Thread of mercury, which traps air at the end of the tube. The other end of the tube is open to the atmosphere. When the tube is turned upside down the volume of the trapped air increases.

It is because________.

Choices

Choice (4) Response

a.

The trapped air molecules hit the mercury harder when travelling downwards

b.

The air gets hotter when the tube is turned upside down

c.

The atmosphere pushes less when it acts upwards on the mercury

d.

The pressure in the trapped air is reduced

Question number: 965

» Chemical Effects of Electric Current

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MCQ▾

Question

The process of depositing a layer of metal on another metal by means of electricity is called

Choices

Choice (4) Response

a.

Electrolyte

b.

Electroplating

c.

Electrolysis

d.

Electrode

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