Which of the following reagents gives a silver mirror test when added to aldehydes? 1 Fehling’s solution 2 Tollen’s Reagent 3 Ebaeyer’s Reagent 4 Nessler’s Reagent

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Would you like to do a Course in MBBS in Mauritius?

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In laundry soaps, a material called ‘filler’ is used. Which of the following is a ‘filler? 1 Talc 2 Sodium silicate 3 Soda ash 4 Sodium phosphate

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what is meant by test manual?

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What is the Cellular Structure ?

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Which of the following metals is a better conductor of electricity? A. Silver B. Copper

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The material used for bleaching paper pulp is 1 Chlorine 2 Caustic soda 3 Sodium hypochlorite 4 Lime

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Amalgams are 1 Alloys which contain carbon 2 Alloys which have great resistance to abrasion 3 Alloys which contain mercury as one of the contents 4 None of these

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The dark lines in the solar spectrum are due to 1 Absorption of corresponding wavelengths by the prism used in he spectrograph 2 Destructive interference between waves of certain definite wavelengths 3 Absorption of corresponding wavelengths by the outer layers of the sun 4 None of these

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Chemical formula for water glass is 1 Na2Sio3 2 Al2O3 3 NaA1O2 4 CaSiO3

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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

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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

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