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Nitrogen is an inert gas and does not easily react with these substances. On the other hand, oxygen reacts with food substances and makes them rancid. Thus, bags used in...
1 Answers 1 views(a) Platinum, gold, and silver are used to make jewellery because they are very lustrous. Also, they are very less reactive and do not corrode easily. (b) Sodium, potassium, and lithium...
1 Answers 1 viewsMetals such as potassium and sodium react so vigorously that they catch fire if kept in the open. Hence, to protect them and to prevent accidental fires, they are kept...
1 Answers 1 viewsButter contains saturated fats. Therefore, it cannot be hydrogenated. On the other hand, oil has unsaturated fats. That is why it can be hydrogenated to saturated fats (solids).
1 Answers 1 views(d) Glycerine
1 Answers 1 viewsAnswer is (b) Sunflower
1 Answers 1 views(1) Energy yielding— wheat, rice, maize (2) Protein yielding— gram, pigeon gram, lentil, soybean (3) Oil yielding— groundnut, castor, mustard, soybean (4) Fodder crops— barseem, oat, sudan grass
1 Answers 1 views[Hint : (a) By dilution test (b) By dye test]
1 Answers 1 viewsIn the presence of oxygen in the air, the fats present in the fatty food are oxidised to compounds which have a bad smell, i.e., the food becomes rancid. Flushing...
1 Answers 1 viewsOil painting, life-size portrait painting and use of perspective
1 Answers 1 views