What is the mass of precipitate formed when 50 mL of 16.9% solution of AgNO₃ is mixed with 50 mL of 5.8% NaCl Solution? (Ag=107.8, N=14, O=16, Na=23, Cl=35.5)
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(a) 28 g (b) […]
20.0 g of a magnesium carbonate sample decomposes on heating to give CO₂ and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
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(a) 75 (b) […]
1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel. Which reactant is left in excess and how much? At wt Mg=24, O₂=16)
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(a) Mg, 0.16g (b) O₂, 0.16g […]
Which one is a constant characteristic of living organisms?
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(a) Adaptation (b) Metabolism (c) Homeostasis (d) Reproduction
Correct Answer:
Homeostasis
Explanation:
Although Reproduction and Metabolism are characteristics of living organism, the characteristics which […]
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