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Unit - 6.1 Heat Transfer PHYSICS - Unit - 6.1 Heat Transfer

ICSE - STD 8 - PHYSICS (ICSE - English Medium). 40 questions in this chapter.

Question types

Unit - 6.1 Heat Transfer question types

40 questions across 7 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.

40
Questions
7
Question groups
5
Question types
Sample Questions

Unit - 6.1 Heat Transfer 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
A bimetallic strip is used in :
  • A
    pressure cooker
  • ✓
    automatic fire alarm
  • C
    ceiling fan
  • D
    flash light

Answer: B.

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Q 2MCQ1 Mark
Small gaps are left between railway lines because :
  • A
    we cannot have rails of very long length
  • ✓
    it allows for expansion of rails during summer
  • C
    it allows for contraction of rails during summer
  • D
    both (b) and ( C)

Answer: B.

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Q 3MCQ1 Mark
A bimetallic strip of brass and iron is straight at room temperature. When this bimetallic strip is heated it bands, such that:
  • A
    iron takes the outer surface of bend
  • ✓
    brass takes the outer surface of bend
  • C
    the bimetallic strip does not bend
  • D
    none of these

Answer: B.

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Q 4MCQ1 Mark
A thick glass tumble cracks when boiling hot water is poured into it because :
  • A
    glass is a bad conductor of heat
  • ✓
    inner surface of glass expands more than outer surface
  • C
    outer surface of glass expands more than inner surface
  • D
    both (a) and (b)

Answer: B.

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Q 13fill in the blanks.1 Mark
(linear, inflated)
A partially inflated balloon is placed near burning wood. After some time the balloon gets _____________ due to the expansion of air in it.
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Q 21TRUE / FALSE1 Mark
A bimetallic strip is based on the principle that different metals have different thermal expansions for the same rise in temperature.
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Q 22Match the following.5 Marks
Column AColumn B
1. Expansion produced in matter due to the absorption of heat energy.(a) Cubical expansion
2. Increase in the length of a solid only on the absorption of heat energy.(b) Bimetallic strip
3. A flat and straight strip of metal made by riveting two flat and straight strips of brass and iron respectively.(c) Linear expansion
4. Increase in the area of a solid only on the absorption of heat energy.(d) Thermal expansion
5. Increase in the volume of a substance on the absorption of heat energy.(e) Superficial expansion
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