If the amount of solute is less than the saturation level of a solution, then the solution is said to be
A) saturated solution
B) unsaturated solution
C) super saturated solution
D) heterogeneous solution
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10. Lymph differs from blood in possessing (1) More proteins and less waste products (2) Less proteins and more waste products (3) More proteins and more waste products (4) Less proteins and less waste products
(2) Less proteins and more waste products
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Two different dice are thrown together. Find the probability that the numbers obtained (i) have a sum less than 7 (ii) have a product less than 16 (ii
Correct Answer - ` (i) 5/12 (ii) 25/36 (iii) 1/4`
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Vasu said that Ethanol is released in fermentation. Bose said that fermentation is the process of anaerobic respiration.
(B) Both are correct
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The measurement of amount of solute that dissolves in a solvent is
Correct option is A) solubility
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The amount of solute present in a saturated solution at a certain temperature is called …………………..
Correct option is B) solubility
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If the amount of solute is little in a solution, then it is said to be …………….. solution.
Correct option is A) diluted
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If the amount of solute is more in a solution, then it is said to be …………….. solution.
B) concentrated
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The amount of solute present in a given amount of solution is called ……………….. of the solution.
C) concentration
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The amount in gr mass of solute present in 100 gr mass of solution is called concentration. If 50 gr of salt in 200 gr of water,
Correct option is D) 20%
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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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