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Practice Quiz

Substances in Common Use

Maharashtra Board · Class 9 · Science

Practice quiz for Substances in Common Use — Maharashtra Board Class 9 Science. MCQs and questions with answers to test your preparation.

45 questions24 flashcards5 concepts

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Quick Quiz: Substances in Common Use

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1

What is the chemical formula of common salt?

2

The pH value of a neutral salt solution is:

3

Bleaching powder has a strong smell because it releases which gas?

4

Hard water becomes soft when we add washing soda because:

45 Questions·
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Sample Questions

1multiple correct

Which of the following substances are used to make food items porous and crispy?

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Baking soda (NaHCO₃), Baking powder

Baking soda and baking powder release CO₂ gas when heated, which makes batter porous and food items like cakes and dhokla fluffy.

2multiple correct

Which of the following are types of radioactive radiation?

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Alpha rays, Beta rays, Gamma rays

Radioactive substances emit three types of radiation: alpha (α), beta (β), and gamma (γ) rays, each with different properties and penetrating power.

3multiple choice

Alum is used in water purification because it helps in:

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Coagulation of impurities

Alum causes coagulation, where solid impurities in water come together, become heavy and settle down, making water clear.

4multiple choice

Teflon is used for coating cooking utensils because:

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Nothing sticks to its surface

Teflon's main property is that neither water nor oil sticks to its surface, making it ideal for non-stick cookware.

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Frequently Asked Questions

What are the important topics in Substances in Common Use for Maharashtra Board Class 9 Science?
Substances in Common Use covers several key topics that are frequently asked in Maharashtra Board Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Substances in Common Use — Maharashtra Board Class 9 Science?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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