tea will coll most easily in a:
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Which of the following is used in making artificial sweetener saccharin? 1 Benzene 2 Toluene 3 Phenol 4 Aniline
Which of the following is called a strategic metal? 1 Silicon 2 Germanium 3 Titanium 4 Uranium
The chemical used as a ‘fixer’ in photography is 1 Borax 2 Sodium thiosulphate 3 Sodium sulphate 4 Ammonium persulphate
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
The variety of coal in which the deposit contains recognizable traces of the orginal plant material is 1 Anthracite 2 Lignite 3 Peat 4 Bitumen
What is the colouring matter in plants called
Potassium permanganate is used for purifying drinking water, because 1 It is dissolves the impurities of water 2 It is a sterilizing agent 3 It is an oxidizing agent 4 It is a reducing agent
Write two characteristics of Science.
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Which of the following alloys is used for making magnets? 1 Duralumin 2 Stainless steel 3 Alnico 4 Magnalium
Conversion of a substance directly from solid to vapour state is known as 1 Ionization 2 Evaporation 3 Vapourisation 4 Sublimation
In modern science, what is 'fourth dimension'?
meron po bang minerals ang astoroids po ba?