Chemistry Which one of the following is not a cause for present global warming and climate change ? Carbondioxide emission Methane emission Deforstation CFC emission Carbondioxide emission Methane emission Deforstation CFC emission ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a commercial source of energy? Natural Gas Petroleum Coal Firewood Natural Gas Petroleum Coal Firewood ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the principal ore of aluminium ? Lignite Bauxite Dolomite Copper Lignite Bauxite Dolomite Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemically ‘Quick Silver is known as Silver Copper Aluminium Mercury Silver Copper Aluminium Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry A balloon filled with helium rises in air because Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air Helium pushes down on the air below the balloon The balloon is weightless Air exerts an upward force on the balloon Helium is less dense than air ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most suitable unit for expressing nuclear radius is : Micron Nanometre Fermi Angstrom Micron Nanometre Fermi Angstrom ANSWER DOWNLOAD EXAMIANS APP
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