Physics-Chemical Effects of Electric Current [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 7 of 29

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Question 1

Chemical Effects of Electric Current
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Question

MCQ▾

Which of the following metal is not extracted by electrolysis?

Choices

Choice (4)Response
a.Sodium
b.Potassium
c.Iron
d.Aluminum

Question 2

Chemical Effects of Electric Current
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Question

MCQ▾

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 3

Chemical Effects of Electric Current
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Question

MCQ▾

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 4

Chemical Effects of Electric Current
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Question

MCQ▾

Electricity is flow of:

Choices

Choice (4)Response
a.Charge
b.Voltage
c.Matter
d.Neutrons

Question 5

Chemical Effects of Electric Current
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Question

MCQ▾

Which of the following is bad conductor?

Choices

Choice (4)Response
a.Bases
b.Lemon juice
c.Hydrochloric acid
d.Distilled water

Question 6

Chemical Effects of Electric Current
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Question

MCQ▾

Which of the following is good conductor?

Choices

Choice (4)Response
a.Milk
b.Sea water
c.Honey
d.Vegetable oil

Question 7

Chemical Effects of Electric Current
Edit

Question

MCQ▾

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