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Unit - 4.1 Atomic Structure CHEMISTRY - Unit - 4.1 Atomic Structure

ICSE - STD 7 - CHEMISTRY (ICSE - English Medium). 55 questions in this chapter.

Question types

Unit - 4.1 Atomic Structure question types

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

55
Questions
7
Question groups
5
Question types
Sample Questions

Unit - 4.1 Atomic Structure 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 noble gas has only two electrons in its valence shell?
  • A
    Radon
  • B
    Krypton
  • C
    Neon
  • ✓
    Helium

Answer: D.

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Q 2MCQ1 Mark
A group of two or more non-metals which has a negative charge on it is called :
  • A
    ion
  • ✓
    complex ion
  • C
    radical
  • D
    none of these

Answer: B.

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Q 3MCQ1 Mark
Ferrous and Ferric ions have valency :
  • A
    +1 and +2 respectively
  • ✓
    +2 and +3 respectively
  • C
    -2 and -3 respectively
  • D
    +1 and +3 respectively

Answer: B.

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Q 4MCQ1 Mark
Protons and neutrons in the nucleus of an atom are called :
  • ✓
    nucleons
  • B
    nuclear particles
  • C
    charged particles
  • D
    mass particles

Answer: A.

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Q 5MCQ1 Mark
Sodium ion is formed :
  • ✓
    by the donation of one electron from its outermost shell
  • B
    by the acceptance of one electron in its outermost shell
  • C
    by the acceptance of one proton in its nucleus
  • D
    by the donation of one proton from its nucleus

Answer: A.

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Q 22TRUE / FALSE1 Mark
The smallest unit of a pure substance which always exists independently and can retain all the physical and chemical properties of that substance is called a molecule.
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Q 25Match The Following.4 Marks
Column AColumn B
1. A subatomic particle within the nucleus of an atom having no electric charge.(a)Atom
2. A negatively charged particle in an atom with a negligible mass.(b) Neutron
3. The central core of an atom.(c) Electron
4. The smallest particle of an element, which may or may not have independent existence, but always takes part in a chemical reaction.(d) Nucleus
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