Tamil Nadu (English Medium) Std 8 Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in


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Question-1
Which one of the following is an insulator?

(A) Copper	(B) Plastic
(C) Aluminum	(D) Gold

Question-2
Sea breeze flows from :

(A) Land to sea	(B) Sea to sea
(C) Sea to land	(D) Land to land

Question-3
In electroplating of gold on silver, which of the following statement is true?

Gold is taken as cathode

Silver is taken as cathode

Gold is taken as anode

Silver is taken as anode

(A) only 1	(B) only 2
(C) both 1 and 4	(D) both 2 and 3

Question-4
The degree of hotness or coldness of a body is called :

(A) Temperature	(B) Coldness
(C) Thermopotential	(D) Heat

Question-5
The device used to detect and measure electric charges is called :

(A) Electroscope	(B) Periscope
(C) Microscope	(D) Telescope

Question-6
In chemical effect of current what kind of energy transfer takes place?

(A) Heat energy to mechanical energy	(B) Chemical energy to electrical energy
(C) Electrical energy to chemical energy	(D) Mechanical energy to heat energy

Question-7
LED is :

(A) Light emitting diode	(B) Light emission diode
(C) Light ejecting diode	(D) Light ejection diode

Question-8
The lower portion of a charged cloud generally carries :

(A) Positive charge	(B) Negative charge
(C) Air	(D) No charge

Question-9
What is the principle behind electroplating?

(A) Electro refining	(B) Electrolysis
(C) Conduction	(D) Convection

Question-10
Lightning arrester was invented by :

(A) Newton	(B) Faraday
(C) Einstein	(D) Franklin

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Std 8

Tamil Nadu (English Medium)

Practice in Related Chapters
Measurements
Force and Pressure
Electricity and Heat
Light and Sound

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