Please select a subject first
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Name the solute, solvent & solution in the statement – ‘sodium chloride dissolves in water to give sodium chloride solution’. Define each of the terms in italics.
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Give a reason why alcohol and water form a miscible mixture while oil & water do not.
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Give the importance of dissolved minerals & salts.
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Give the importance of dissolved air – in water.
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Select the correct answer of the following statement:
A solution which can pass through a filter paper but not through a semipermeable membrane.
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Select the correct answer of the following statement:
A decahydrate crystal.
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Select the correct answer of the following statement:
A drying agent placed in desiccator.
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Give a balanced equation for the following conversion:
Calcium sulphate in permanent hard water to calcium carbonate using sodium carbonate.
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Give a balanced equation for the following conversion:
Sulphur dioxide to sulphurous acid using a neutral liquid.
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Give a balanced equation for the following conversion:
Potassium oxide to a strong alkali.
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Give a balanced equation for the following conversion:
Magnesium bicarbonate in temporary hard water to magnesium carbonate by boiling.
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Complete the statement by filling the blank with the correct word from the option.
Solubility of most solids ___ with rise in temperature.
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Complete the statement by filling the blank with the correct word from the option.
Kerosene & water form a _______ mixture.
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Complete the statement by filling the blank with the correct word from the option.
The ratio of hydrogen & oxygen in water is ____.
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Give reason for the following:
The percentage of oxygen, in air dissolved in water, is higher than the percentage of oxygen in ordinary air.
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Differentiate between the two branches of chemistry – organic chemistry & inorganic chemistry with suitable examples.
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State how carbon occurs in the free state and in the combined state.
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State in brief the transformation of vegetable matter to different types of coal varying in carbon content.
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Carbon dioxide occurs both in the free state and in the combined state.
State three methods how carbon dioxide is added to the atmosphere.
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How would you prove experimentally that carbon dioxide does not support combustion.
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