When the unknown was heated , could the decrease in mass have been partly due to the loss of some substance other than water ?

When the unknown was heated , could the decrease in mass have been partly due to the loss of some substance other than water ?
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yes because water is loss from hydrates compound
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A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will - (1) increase (2) decrease (3) remain unaffected (4) have its shape changed

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Last Answer : (A) Repairs and maintenance cost

In bio fortification technique plant breeders use breeding to overcome (1) Loss due to insect pests (2) Decrease in food production (3) Deficiencies of micronutrients and vitamins (4) Loss due to plant diseases

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Last Answer : Deficiencies of micronutrients and vitamins

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Last Answer : (D) All will cool at the same rate

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Description : Which of the following is the best example of law of conservation of mass? [NCERT 1975] (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2. (B) When 12 g of carbon is ... mass remains unaltered. (D) The weight of a piece of platinum is the same before and after heating in air.

Last Answer : (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2.