🧪

Atoms & Elements

Atomic structure, periodic table, chemical bonding and valency

Sample Practice Questions

  1. The mass number of an atom is the total number of:

    • Protons only
    • Electrons and protons
    • Protons and neutrons
    • All subatomic particles
    Show answer

    Answer: Protons and neutrons

  2. The molecular formula of ammonia is:

    • N₂H₄
    • NH₃
    • NH₄
    • N₂H₂
    Show answer

    Answer: NH₃

  3. Protons carry _____ charge.

    • Negative
    • Positive
    • No charge
    • Variable charge
    Show answer

    Answer: Positive

  4. Which subatomic particle has no charge?

    • Proton
    • Electron
    • Neutron
    • Positron
    Show answer

    Answer: Neutron

Practise 20 questions →

Practice Questions

Practice 20 randomly selected NTSE questions on Atoms & Elements. Answers are revealed after each question.

Start Practice →

Frequently Asked Questions

What does Atoms & Elements cover in the NTSE exam?

Atomic structure, periodic table, chemical bonding and valency.

How can I practise NTSE Atoms & Elements questions for free?

Practise free NTSE Atoms & Elements questions with instant answers and explanations on Safe Learning for Kids — no sign-up required.

Other NTSE sections

Verbal Analogies Identify the relationship between word pairs and apply it to find the missing word Verbal Series Completion Find the missing word or letter group that continues the given series Non-Verbal Figure Classification Identify the odd figure or group that does not belong with the others Non-Verbal Pattern Completion Determine which figure completes the missing piece of a matrix or series Number Patterns & Series Find the missing number in sequences based on arithmetic, geometric, or mixed rules Arithmetic Reasoning Solve word problems using ratios, percentages, profit & loss, and time-speed-distance
SAT Topics