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Formula Sheet

Air and Water — Formula Sheet

NIOS · Class 10 · Science & Tech

5 formulas from Air and Water (NIOS Class 10 Science & Tech) on one page, grouped by topic. Part of the NIOS Class 10 Science & Tech syllabus.

39 questions40 flashcards5 formulas & key relations5 concepts

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A cross-section diagram showing the troposphere and stratosphere, highlighting their approximate heights, key characteristics, and major components, including the ozone layer's location.
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5 Entries · 1 Section

Formulas and Key Relations

Purification, Hardness, and Softening of Water

Ca(HCO3)2 --Heat--> CaCO3 + H2O + CO2

Mg(HCO3)2 --Heat--> MgCO3 + H2O + CO2

Ca(HCO3)2 + Ca(OH)2 --Heat--> CaCO3 + 2H2O

Mg(HCO3)2 + Ca(OH)2 --Heat--> 2MgCO3 + CaCO3 + 2H2O

CaCl2 + Na2CO3 --Heat--> CaCO3 + 2NaCl

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Frequently Asked Questions

What are the important topics in Air and Water for NIOS Class 10 Science & Tech?
Key topics in Air and Water include Composition and Importance of Air, Oxygen, Nitrogen, and Carbon Dioxide, Water Vapour, Humidity, Clouds, and Rain, Air Pressure and Atmosphere. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How many formulas are in Air and Water?
This sheet lists 5 formulas from Air and Water, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Air and Water for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 39 practice questions on Air and Water. Revise 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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All NIOS Class 10 Science & Tech Formula Sheet

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