Physics-Chemical Effects of Electric Current (NSTSE (National Science Talent Search Exam- Unified Council) Class 8): Questions 1 - 8 of 29

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Question number: 1

» Physics » Chemical Effects of Electric Current

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Question

Which of the following metal is not extracted by electrolysis?

Choices

Choice (4) Response

a.

Sodium

b.

Potassium

c.

Iron

d.

Aluminum

Question number: 2

» Physics » Chemical Effects of Electric Current

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Question

The most preferring material as heating element in electrical immersion heater is:

Choices

Choice (4) Response

a.

Iron

b.

Nichrome

c.

Magnesium oxide

d.

Copper

Question number: 3

» Physics » Chemical Effects of Electric Current

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Question

When we use dilute sulphuric acid as an electrolyte solution, it splits in:

Choices

Choice (4) Response

a.

Hydrogen ions, oxygen ions and sulfate ions

b.

Oxygen ions and hydrogen ions

c.

Oxygen ions, hydrogen ions and sulfur ions

d.

Hydrogen ions and sulfate ions

Question number: 4

» Physics » Chemical Effects of Electric Current

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MCQ▾

Question

Electricity is flow of:

Choices

Choice (4) Response

a.

Charge

b.

Voltage

c.

Matter

d.

Neutrons

Question number: 5

» Physics » Chemical Effects of Electric Current

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MCQ▾

Question

Which of the following is bad conductor?

Choices

Choice (4) Response

a.

Bases

b.

Lemon juice

c.

Hydrochloric acid

d.

Distilled water

Question number: 6

» Physics » Chemical Effects of Electric Current

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MCQ▾

Question

Which of the following is good conductor?

Choices

Choice (4) Response

a.

Milk

b.

Sea water

c.

Honey

d.

Vegetable oil

Question number: 7

» Physics » Chemical Effects of Electric Current

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MCQ▾

Question

Which of the following, is not working on heating effect of electric current?

Choices

Choice (4) Response

a.

Water heater

b.

Electric motor

c.

Electric iron

d.

Electric bulb

Question number: 8

» Physics » Chemical Effects of Electric Current

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Question

There is change of colour of the solution, when current is passed through a conducting solution. This is because of:

Choices

Choice (4) Response

a.

The chemical effect of current

b.

The lighting effect of current

c.

The magnetic effect of current

d.

The heating effect of current

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