The compound used as common salt is
1. sodium chloride
2. calcium chloride
3. sodium oxide
4. hydrogen chloride
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Take two test tubes with some water. Add salt powder to one test tube and add crystals of salt to the second one. Observe.
B) size of the solute
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The mass by mass percentage concentration of a 100g salt solution, which contains 20g salt is
Correct option is B) 20%
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By which method do you separate Ammonium chloride from a mixture containing Sodium chloride and Ammonium chloride ?
A) sublimation
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Solution X contains 50 g of salt in 100g of water and solution Y contains 100g of salt in 200g of water.
A) Solution X has the same concentration as solution Y.
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Ram : Salt is a compound. Raj : Salt is a mixture. Who is correct ? A) Ram B) Raj
Correct option is A) Ram
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1. (a) Is ammonia more dense or less dense than air? (b) What property of ammonia is demonstrated by the Fountain Experiment? (c) Write the balanced equation for the reaction between ammonia and sulphuric acid. 2. Pick the odd member from the list giving reasons: (a) Ammonia, sulphur dioxide, hydrogen chloride, carbon dioxide. (b) Copper oxide, aluminium oxide, sodium oxide, magnesium oxide. 3. Give reasons for the following : (a) Liquid ammonia is used as a refrigerant in ice plants. (b) Aqueous solution of ammonia is used for removing grease stains from woollen clothes. (c) Aqueous solution of ammonia gives a pungent smell. (d) Aqueous solution of ammonia conducts electricity.
(1) (a) ammonia is less dense than air (b) solubility in water (c) 2NH3 + H2SO4 → (NH4)2SO4 (2) (a) Ammonia → because - NH3 is basic while, SO2,HCl and CO2 are acidic oxides. (b) CuO,...
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Assertion (A): Salt crystal is not solid. Reason (R) : Shape of the salt crystals is depending on the shape of the container.
D) A’ and ‘R’ are false
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_______ gas cylinders are used for breathing purpose for a diver going deep into the sea (a) Hydrogen (b) Carbon-di-oxide
Correct answer is (c) Oxygen
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Identify the odd one out and justify. Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.
Crystalline common salt is the odd one out, as it does not contain water of crystallisation. It is an ionic compound and ionic compounds are crystalline in nature and rest all...
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Statement : Liquid juncation potential can be eliminated by putting a salt bridge of `KCl`. Explanation : The funcation of salt bridge is to remove li
Correct Answer - C Explanation is correct reason for statement
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