Chemical Effects of Electric Current-Do Liquids Conducts Electricity? [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 5 of 5
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Question 1
Statement True-False▾
Does distilled water conduct?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | False | |
b. | True | |
c. | None of the above | |
d. | All of the above | |
Question 2
Question MCQ▾
LED is defined as:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Light emitting diode | |
b. | Insulator | |
c. | Lead | |
d. | Electrode | |
Question 3
Question MCQ▾
Substances which allow the current to pass through them are:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Semi-Conductors | |
b. | Conductors | |
c. | Insulators | |
d. | Question does not provide sufficient data or is vague | |
Question 4
Question MCQ▾
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 opposition is large current is small | |
b. | If opposition offered by the substance is small the current will be large and bulb glows | |
c. | 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 | |
d. | Both a. and c. are correct | |
Question 5
Question MCQ▾
Liquids which conduct electricity are:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Solutions of bases | |
b. | Salt solution | |
c. | Solution of acids | |
d. | All a., b. and c. are correct | |