‘Saponification involves the hydrolysis of fats and oils by
1 Water
2 Washing soda
3 Stearic acid
4 Caustic soda
What is condensation? 1 Change of gas into solid 2 Change of solid into liquid 3 Change of vapour into liquid 4 Change of heat energy into cooling energy
What is the morphology ?
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What is the Nutrition ?
infra-red rays were first detected by? the intensity level of sound is measured in? the material used for a fuse wire should? radioactivity is a property of? what is the source of electric energy in an artificial satellite? the following is used as a lubricant in heavy machines? supher, bauxite , graphite, phosphorus
Which of the following is in liquid form at room temperature? 1 Cerium 2 Sodium 3 Francium 4 Lithium
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In which of the following processes light energy is converted into chemical energy? 1 Respiration 2 Fermentation 3 Photosynthesis 4 Photoresiration
Which gas is used for preparation of soda water? 1 Ammonia 2 carbon dioxide 3 Hydrogen 4 Nitric oxide
Which is/are the important raw material(s) required in cement industry? 1 Limestone 2 Gypsum & clay 3 Clay 4 Limestone & clay
The process by which an organic compound breaks down into simpler compounds on heating to high temperature is known as 1 Armatisation 2 Polymerization 3 Pyrolysis 4 Reduction
Deep blue color is imparted to glass by the presence of 1 Iron oxide 2 Cupric oxide 3 Nickel oxide 4 Cobalt oxide