Chemical Effects of Electric Current-Do Liquids Conducts Electricity? (CBSE Class-8 Science): Questions 1 - 5 of 5

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Question number: 1

» Chemical Effects of Electric Current » Do Liquids Conducts Electricity? » Good Conductor and Poor Conductor of Electricity

True-False▾

Following Statement is true or false:

Does distilled water conduct?

Question number: 2

» Chemical Effects of Electric Current » Do Liquids Conducts Electricity? » LED

MCQ▾

Question

LED is defined as:

Choices

Choice (4) Response
a.

Light emitting diode

b.

Electrode

c.

Lead

d.

Insulator

Question number: 3

» Chemical Effects of Electric Current » Do Liquids Conducts Electricity? » Concept of Electric Current

MCQ▾

Question

Substances which allow the current to pass through them are:

Choices

Choice (4) Response
a.

Semi-Conductors

b.

Conductors

c.

Insulators

d. None of the above

Question number: 4

» Chemical Effects of Electric Current » Do Liquids Conducts Electricity? » Concept of Electric Current

MCQ▾

Question

It is quite possible that even though the liquid allows the electric current to pass through it, the circuit is complete and the bulb does not glow can you reason out why?

Choices

Choice (4) Response
a.

If the current in the circuit is too small the filament of the bulb does not get heated to a high temperature and bulb does not glow

b.

If opposition offered by the substance is small the current will be large and bulb glows

c.

If opposition is large current is small

d. Both a. and c. are correct

Question number: 5

» Chemical Effects of Electric Current » Do Liquids Conducts Electricity? » Liquid Conducts Electricity

MCQ▾

Question

Liquids which conduct electricity are:

Choices

Choice (4) Response
a.

Solution of acids

b.

Solutions of bases

c.

Salt solution

d. All a. , b. and c. are correct

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