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Unit - 5.3 Thermal Expansion And its Applications PHYSICS - Unit - 5.3 Thermal Expansion And its Applications

ICSE - STD 7 - PHYSICS (ICSE - English Medium). 33 questions in this chapter.

Question types

Unit - 5.3 Thermal Expansion And its Applications question types

33 questions across 8 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

33
Questions
8
Question groups
5
Question types
Sample Questions

Unit - 5.3 Thermal Expansion And its Applications questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
Which of the following expand(s) in volume only when heated ?
  • A
    Solid
  • B
    Liquid
  • ✓
    Gas
  • D
    Both (b) and ( c)

Answer: C.

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Q 2MCQ1 Mark
The bimetallic strip made from brass and iron bends when heated. When it’s bent the shape is :
  • A
    brass on the outer side
  • B
    iron on the inner side
  • C
    iron on the outer side
  • ✓
    both (a) and (b)

Answer: D.

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Q 3MCQ1 Mark
Small gaps are left between railway lines because :
  • ✓
    rails of very long length are not available
  • B
    expansion of rails during summer
  • C
    contraction of rails during summer
  • D
    both (b) and (c)

Answer: A.

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Q 4MCQ1 Mark
The increase in volume of a substance when heated, is called :
  • A
    thermal expansion
  • B
    liner expansion
  • ✓
    superficial expansion
  • D
    cubical expansion

Answer: C.

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Q 5MCQ1 Mark
The increase in length of a solid when heated is called :
  • A
    thermal expansion
  • ✓
    liner expansion
  • C
    superficial expansion
  • D
    cubical expansion

Answer: B.

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Q 9[1 Mark Question Answer]1 Mark
Given below statement is incorrect. Write the correct statement :
On heating, the bimetallic strip (brass and iron) bends in such a way that the brass is on the inner side while iron is on outer side of the bend.
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Q 25TRUE / FALSE1 Mark
When a gas is heated, its molecules move faster and the collisions become more violent, and thus they move away from each other.
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Q 30Match The Following.5 Marks
Column AColumn B
1.Expansion produced in matter due to the absorption of heat energy.(a)Linear expansion
2.Increase in the area of a solid only on the absorption of heat energy.(b)Gas
3.The kind of matter which expands most on heating.(c)Superficial expansion
4.Increase in the volume of a solid on the absorption of heat energy.(d)Thermal expansion
5.Increase in the length of a substance on the absorption of heat energy.(e)Cubical expansion
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