Chemistry Ruby and sapphire are oxides of Tin Copper Aluminium Iron Tin Copper Aluminium Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because Its atomic number is 2 It is a noble gas It is one of the constitutents of water It is lighter than air Its atomic number is 2 It is a noble gas It is one of the constitutents of water It is lighter than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a cause for present global warming and climate change ? Methane emission Carbondioxide emission Deforstation CFC emission Methane emission Carbondioxide emission Deforstation CFC emission ANSWER DOWNLOAD EXAMIANS APP
Chemistry Many people died in London in 1952 as result of air pollution producing Mist Fog Sleet Smog Mist Fog Sleet Smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry What are the number of moles of CO2 which contains 16 g of oxygen? 0.2 mole 0.5 mole 0.4 mole 0.25 mole 0.2 mole 0.5 mole 0.4 mole 0.25 mole ANSWER DOWNLOAD EXAMIANS APP
Chemistry Two moles of an ideal gas expand freely into vacuum. The work done by the gas is Infinity 4J 2J Infinity 4J 2J ANSWER DOWNLOAD EXAMIANS APP
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