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What are soaps?
1 Salts of silicates
2 Esters of heavy fatty acids
3 Sodium or potassium salts of heavier fatty acids
4 Mixture of glycerol and alcohols
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Answer / guest
(3) Sodium or potassium salts of heavier fatty acids
| Is This Answer Correct ? | 10 Yes | 4 No |
Answer / shweta
Sodium or potassium salts of heavier fatty acids
| Is This Answer Correct ? | 4 Yes | 1 No |
Which of the following is a chemical change? 1 Rusting of iron 2 Tempering of iron 3 Melting of iron 4 Bending of iron
Which of the following is commonly called a ‘polyamide’? 1 Rayon 2 Orlon 3 Terylene 4 Nylon
Rusting of iron involves 1 Oxidation 2 Reduction 3 Displacement 4 Decomposition
Water is a good solvent of ionic salts because 1 It has no colour 2 It has a high boiling point 3 It has a high dipole moment 4 It has a high specific heat
The ore of which of the following metals can be concentrated by hydraulic washing? 1 Tin 2 Sodium 3 Iron 4 Manganese
What is one light second?
An element that does not occur in nature but can be produced artificially is 1 Thorium 2 Radium 3 Plutonium 4 Uranium
What is difference between nanoscience and nanotechnology?
1 Answers GSK GlaxoSmithKline,
Atom bomb is based on the principle of 1 Nuclear fusion 2 Nuclear fission 3 Both (a) & (b) 4 None of these
4 Answers ECAT, Group 4 iv, Qnet, UPSC,
Water is a compound because 1 It exists as a solid, a liquid or a gas 2 It contains hydrogen and oxygen 3 It contains two different elements joined by chemical bonds 4 It cannot be split up into simpler substances by chemical means
Which of the following is the best conductor of electricity? 1 Zinc 2 Copper 3 Gold 4 Silver
Which of the following is used as a filler in rubber tyres? 1 Graphite 2 Coal 3 Coke 4 Corbon black
Biological Sciences 
