Class 9 Chemistry Competitive Exam MCQs – Practice Test 5 (Chapter 3)

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Fundamentals of Chemistry MCQs – Practice Test 5 PDF Download

MCQ 21: Compounds have atoms of:

same sizes
different sizes
same electrons
different electrons

MCQ 22: An oxide ion has -2 charge because:

oxygen looses two electrons
oxygen gains two electrons
oxygen becomes neutral
oxygen gains 3 electrons

MCQ 23: Which of the following is present in vinegar?

10% acetic acid
5%acetic acid
7% acetic acid
8% acetic acid

MCQ 24: The molecular formula gives:

simplest ratio of atoms
actual whole number ratio of atoms
whole number ratio of atoms
natural number ratio of atoms

MCQ 25: 6.022 * 10²³ atoms of Sulphur contains:

2 moles
3 moles
4 moles
1 mole

Fundamentals of Chemistry MCQs App & e-Book – Class 9 Chemistry Competitive Exam

Structure of Atoms MCQs

Solutions MCQs

Chemical Reactivity MCQs

Fundamentals of Chemistry MCQs

Electrochemistry MCQs

Periodic Table and Periodicity MCQs

Structure of Molecules MCQs

Physical States of Matter MCQs

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