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प्रश्न
Match the statements in column A with that in column B.
| Column A | Column B |
| (a) deliquescent substance | (1) sodium bicarbonate |
| (b) hygroscopic substance | (2) magnesium chloride |
| (c) efflorestance substance | (3) conc. sulphuric acid |
| (d) substance causing temporary hardness | (4) washing soda |
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उत्तर
| Column A | Column B |
| (a) deliquescent substance | (2) magnesium chloride |
| (b) hygroscopic substance | (3) conc. sulphuric acid |
| (c) efflorestance substance | (4) washing soda |
| (d) substance causing temporary hardness | (1) sodium bicarbonate |
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संबंधित प्रश्न
Why do organisms need water?
Give one word for the following statement:
The gaseous form of water found in air .
Give one word for the following statement:
A mixture of common salt and ice .
Explain why:
If distilled water is kept in a sealed bottle for a long time, it leaves etchings on the surface of the glass.
Explain why:
Fused CaCl2 or conc. H2SO4 is used in a desiccator.
Name a deliquescent substance’.
________ of water is in oceans and seas.
Condensation results in the formation of dew on grass.
From where do the following usually get water? In which form is water present in them?
Animals
Fill in the blanks selecting words from the following list
snow, rain, clouds, vapour, evaporation, transpiration.
Water, as ______ goes into atmosphere by the processes of ______ and ______ and forms ______, which on condensation fall in the form of ______ and ______.
