NSO Level 1- Science Olympiad (SOF) Class 8: Questions 965 - 969 of 1175

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Question 965

Question

MCQ▾

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

Question 966

Question

MCQ▾

Which of the following can be a chemical effect of electric current?

Choices

Choice (4)Response

a.

Change in colour of solution

b.

Formation of gas bubbles at the electrodes

c.

Deposition of metal on electrodes

d.

All a., b. and c. are correct

Question 967

Appeared in Year: 2012

Question

MCQ▾

Taking one light year equal to and one day equal to , what will be the speed of light in light year per day if the speed of light in is ?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 968

Question

MCQ▾

Glowing of a bulb shows

Choices

Choice (4)Response

a.

Light effect of electric current

b.

Heating effect of electric current

c.

Chemical effect of electric current

d.

Sound effect of electric current

Question 969

Question

MCQ▾

Nowadays, tungsten filament bulbs are replaced by LED bulbs. The reason is

Choices

Choice (4)Response

a.

LED bulbs are much cheaper than tungsten bulbs.

b.

Tungsten is a costly metal and has high resistance.

c.

The filament of LED bulbs do not require much temperature to glow.

d.

All a., b. and c. are correct

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