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प्रश्न
A jumbled word is given here. Write the correct form of the word.
QUIFERA
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संबंधित प्रश्न
Name the gas produced when fossil fuel is burnt.
Give reason of Alcohol is mixed with water and is used in car radiator.
Give reason of Icebergs float on ocean water.
Answer the following question:
Name two gases dissolved in natural water.
Give balanced chemical equations to show the reaction between Coke and steam.
How do fishes and aquatic animals survive when the pond gets covered with thick ice?
Identify A, B, C and D; first one is done for you.
Explain why:
Fused CaCl2 or conc. H2SO4 is used in a desiccator.
Compare the effect of soaps and detergents on hard water.
Give the importance of dissolved air – in water.
Give a balanced equation for the following conversion:
Calcium sulphate in permanent hard water to calcium carbonate using sodium carbonate.
Give a balanced equation for the following conversion:
Potassium oxide to a strong alkali.
Give a balanced equation for the following conversion:
Magnesium bicarbonate in temporary hard water to magnesium carbonate by boiling.
Give a reason for the following:
Efflorescence is minimum during humid conditions.
Suggest some ideas to save rainwater in your school.
________ of water is in oceans and seas.
Sea water can be used for irrigation as such.
Nitrogen is used for the treatment of drinking water.
“Every Drop Counts” is a slogan related to
Think and suggest some ways to minimise waste and pollutants at their source, taking your home as an example.
