3. The equivalent mass of an element is always :
(a) Its atomic mass multiplied by valency (b) One half of its molecular mass.
(c) The mass of 22.4 litre of gas at STP.
(d) Mass of the element that combines with 8 parts by mass of oxygen.
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a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose
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a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants it consists mainly of cellulose
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