ICSE Class 6CISCE
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Question Bank Solutions for ICSE Class 6 - CISCE - Physics

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Write true or false for statement

 The molecules of each substance are identical.

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

 Write true or false for statement

The inter-molecular forces are effective at all distances between the two molecules.

 

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

 Fill in the blank

All the molecules of a substance are .............

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

 Select the correct alternative

The diameter of a molecule is approximately

  1.  1 cm
  2.  10 cm
  3.  10-10 m
  4.  1 m
[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

 Select the correct alternative

The inter-molecular forces are strongest in

  1.  solids
  2.  liquids
  3.  gases
  4.  both (i) and (ii)
[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Select the correct alternative

The molecules

  1.  in solid, liquid and gas, move freely anywhere.
  2.  in a solid, move freely within its boundary.
  3.  in a liquid, move within its boundary.
  4.  in a gas, move only within its boundary.
[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Select the correct alternative

The inter-molecular forces in liquids are

  1.  as strong as in solids
  2.  stronger than in solids
  3.  weaker than in solids
  4.  weaker than in gases
[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Match the following columns

Column A Column B
A. A molecule is composed of 

i. does not exist free in nature  

B. Ice , water and  water vapour  ii. can vibrate only up to about `10^-10`m from their mean  position 
C. An atom  iii.atoms. 
D. Gases iv. are the three states of water .
E. The molecules of a solid  v. occupy space 
[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Define matter. What is its composition ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

What is a molecule ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

What is the approximate size of a molecule ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

What do you mean by inter-molecular spacing ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Describe a simple experiment to illustrate the existence of inter-molecular spacing.

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

What do you mean by inter-molecular forces ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

What are the forces of cohesion and adhesion ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

State the approximate spacing between two molecules of a matter.

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

The molecules in a substance are in motion. What type of path do they follow ?

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.

[1] Matter
Chapter: [1] Matter
Concept: Concept of Matter and And Composition

Fill in the blank:

1 metric tonne = .............

[2] Physical Quantities and Measurement
Chapter: [2] Physical Quantities and Measurement
Concept: Concept of Physical Quantities and Measurement
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