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Question Bank Solutions for ICSE Class 8 - CISCE - Physics

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Physics
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The smallest unit of matter that exists freely in nature is called ...........

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Intermolecular space is maximum in .......... less in ............ and the least in .........

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

 Match the following

Column A Column B
(a) Molecules (i) Water boils
(b) 100° C (ii) Evaporation
(c) 0° C (iii) Changes from solid to gas
(d) At all temperatures (iv) Matter
(e) Camphor (v) Water freezes
[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

The inter-molecular force is maximum in

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

The inter-molecular space is maximum in

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

The molecules can move freely anywhere in

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Select the correct alternative

The molecules can move freely anywhere in

  1. gases
  2. liquids
  3. solids
  4. none of the above
[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Define the term matter. What is it composed of?

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

What do you mean by the inter-molecular spaces? How do they vary in different states of matter?

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Solids have definite shape and definite volume. 

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Liquids have definite volume but do not have definite shape.

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Gases have definite volume but no definite shape.

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Liquids have definite shape and definite volume.

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

Name the processes involved in two cases.

[0.01] Matter
Chapter: [0.01] Matter
Concept: Matter (Substance)

A fuse wire has a high melting point.

[0.08199999999999999] Static Electricity
Chapter: [0.08199999999999999] Static Electricity
Concept: Static Electricity

Silver is an insulator of electricity.

[0.08199999999999999] Static Electricity
Chapter: [0.08199999999999999] Static Electricity
Concept: Static Electricity

All metals are insulators of electricity.

[0.08199999999999999] Static Electricity
Chapter: [0.08199999999999999] Static Electricity
Concept: Static Electricity

 Match the following

  Column A Column B 
Electric power  volt 
kWh joule
Electric current  volt × ampere
Electric energy  watt
watt ampere
potential difference  electrical energy
[0.08199999999999999] Static Electricity
Chapter: [0.08199999999999999] Static Electricity
Concept: Static Electricity

How can you check just by seeing the meter whether the electricity is in use or not?

[0.08199999999999999] Static Electricity
Chapter: [0.08199999999999999] Static Electricity
Concept: Static Electricity
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