Question types

Unit - 3.1 Elements, Compounds and Mixtures question types

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

29
Questions
8
Question groups
5
Question types
Sample Questions

Unit - 3.1 Elements, Compounds and Mixtures questions

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

(a) Define sublimation. State the kind of mixture in which this method is used.
(b) How can you separate the components of the mixture of kerosene oil and water? Mention the principle involved in it.
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Q 18MCQ1 Mark
In which of the following substances its constituents retain their properties ?
  • A
    Atom
  • B
    Element
  • Compound
  • D
    Mixture

Answer: C.

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Q 19MCQ1 Mark
In which of the following formation of substances need energy change necessarily ?
  • A
    Element
  • Compound
  • C
    Mixture
  • D
    All of these

Answer: B.

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Q 20MCQ1 Mark
In which of the following substances mechanical separation is possible ?
  • A
    Atom
  • B
    Element
  • C
    Compound
  • Mixture

Answer: D.

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Q 21MCQ1 Mark
In nature, a chemical compound is
  • A
    pure
  • B
    homogeneous
  • C
    heterogeneous
  • both (a) and (b)

Answer: D.

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Q 22MCQ1 Mark
In which of the following reactions can an element be broken into two or more smaller parts ?
  • A
    Physical
  • B
    Chemical
  • Nuclear
  • D
    Mechanical

Answer: C.

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 Column A Column B
1.A pure substance which cannot be broken into two or more simpler substances by any known physical and chemical means.a.Separating funnel
2.The smallest unit of an element which shows all properties of that element.b.Mixture
3.A pure substance which is composed of two or more elements, combined chemically in a fixed proportion by weight.c.Atom
4.The substance whose constituents are present in any ratio.d.Compound
  e.Element
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