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Unit - 1.1 Matter CHEMISTRY - Unit - 1.1 Matter

ICSE - STD 8 - CHEMISTRY (ICSE - English Medium). 35 questions in this chapter.

Question types

Unit - 1.1 Matter question types

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

35
Questions
8
Question groups
5
Question types
Sample Questions

Unit - 1.1 Matter questions

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

Q 8[3 Mark Question Answer]3 Marks
Define the terms given below and answer the questions associated to each term.
(a) Solid : Why do solids not diffuse in one another ?
(b) Liquid : Why do liquid flow ?
(c) Gas : Why are gases highly compressible ?
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Q 10[5 Mark Question Answer]4 Marks
Name the change of state during the following changes :
(a) Formation of clouds.
(b) Drying of wet clothes.
(c) Naphthalene balls become smaller when kept in air.
(d) Formation of snow.
(e) Melting of wax when kept in sunshine.
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Q 16MCQ1 Mark
The process due to which a solid directly changes into gaseous state on heating, without changing first into the liquid state, and the gaseous state on cooling directly changes into solid state, without changing first into the liquid state, is called
  • A
    condensation
  • B
    fusion
  • C
    freezing
  • ✓
    sublimation

Answer: D.

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Q 17MCQ1 Mark
The process due to which a liquid changes into solid state by giving out heat energy, is called
  • A
    melting
  • ✓
    freezing
  • C
    boiling
  • D
    evaporating

Answer: B.

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Q 18MCQ1 Mark
The various state of matter can be interchanged into one another by altering the conditions of:
  • A
    pressure
  • B
    temperature
  • C
    volume
  • ✓
    both (a) and (b)

Answer: D.

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Q 19MCQ1 Mark
Which of the following state of matter is highly compressible ?
  • A
    Solid
  • B
    Liquid
  • ✓
    Gas
  • D
    None of these

Answer: C.

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Q 20MCQ1 Mark
With the supply of heat energy to matter, the kinetic energy of its particles:
  • A
    decreases
  • ✓
    increases
  • C
    remains same
  • D
    cannot be said

Answer: B.

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Q 26Match The Following.4 Marks
 Column A Column B
1The intermolecular force acting between same kind of molecules.AMelting
2The intermolecular force acting between different kinds of molecules.BCohesive
3Intermixing of different substances due to random motions of their molecules.CGas
4The molecules of a state of matter having very large kinetic energy.DAdhesive
  eDiffusion
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