Chemistry Oxygen which is vital for life is a product of photosynthesis and comes from Water Carbon dioxide Oxides of mineral elements Carbonates from soil Water Carbon dioxide Oxides of mineral elements Carbonates from soil ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major constituent of gobar gas is Butane Carbon dioxide Isobutane Methane Butane Carbon dioxide Isobutane Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following contributes largely to the ‘green house effect’ ? Ozone Carbon monoxide Water vapour Carbon dioxide Ozone Carbon monoxide Water vapour Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atomic number is the number equal to Protons Electrons Neutrons None of these Protons Electrons Neutrons None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is a carbohydrate ? Cane-sugar Hydrogen peroxide Turpentine Nylon Cane-sugar Hydrogen peroxide Turpentine Nylon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound that has the least value for octane number is : N-heptane 2-methyl heptane Iso-octane 2,2-dimethyl hexane N-heptane 2-methyl heptane Iso-octane 2,2-dimethyl hexane ANSWER DOWNLOAD EXAMIANS APP
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