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
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Answer / shweta
Sodium or potassium salts of heavier fatty acids
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A moderator is used in nuclear reactors in order to 1 Increase the number of neutrons 2 Decrease the number of neutrons 3 Slow down the speed of neutrons 4 Accelerate the neutrons
The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium sulphate 4 Ammonium persulphate
List out the General Objectives of teaching Physical science at Primary stages.
0 Answers Mahatma Gandhi University,
Why is ice wrapped in gunny sacks to prevent it from melting
Which of the following is a chemical change? 1 Oxidation 2 Reduction 3 Sublimation 4 Decomposition
The vast resources of unutilized natural gas can be used in the production of 1 Graphite 2 Fertilizers 3 Synthetic petroleum 4 Carbide
What is the cytology ?
Which gas is used in cold store ?
An atom of an element with mass number 23 and atomic number 11 will have 1 11 neutrons, 12 protons and 11 electrons 2 11 protons, 12 neutrons and 11 electrons 3 11 neutrons, 11 protons and 12 electrons 4 23 protons and 11 electrons
The pink color of Bayer’s reagent is discharged when acetylene is passed through it. This is due to the formation of 1 Acetic acid 2 Ethylene 3 Water 4 Oxalic acid
it is not advisable to sleep under a tree at night becouse trees release
The two elements that are frequently used for making transistors are 1 Boron and aluminium 2 Silicon and germanium 3 Iridium and tungsten 4 Niobium and columbium