Chemistry Solder metal is an alloy of Copper and tin Copper and zinc Lead and antimony Lead and tin Copper and tin Copper and zinc Lead and antimony Lead and tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry Methanoic and ethanoic acids can be distinguished by the action of NaHCO3 NaOH Tollen's reagent SOCl2 NaHCO3 NaOH Tollen's reagent SOCl2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one is the purest form of carbon Graphite Diamond Iron Coal Graphite Diamond Iron Coal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Diamond is lustrous because Its refractive index is high It is pure It is hard It is colourless Its refractive index is high It is pure It is hard It is colourless ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of ozone in the stratosphere is responsible for Checking the penetration of ultra-violet rays to the earth Higher rate of photosynthesis Increasing the average global temperature in recent years Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth Higher rate of photosynthesis Increasing the average global temperature in recent years Supplying oxygen for people travelling in jets ANSWER DOWNLOAD EXAMIANS APP
Chemistry Freon' used as refrigerants is chemically Fluorinated aromatic compound Chlorofluoro hydrocarbon Chlorinated hydrocarbon Fluorinated hydrocarbon Fluorinated aromatic compound Chlorofluoro hydrocarbon Chlorinated hydrocarbon Fluorinated hydrocarbon ANSWER DOWNLOAD EXAMIANS APP
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