Chemistry Concentration of a material which is lethal to 50% animal is called LD50 LC50 ADI NOAEL LD50 LC50 ADI NOAEL ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a commercial source of energy? Coal Petroleum Firewood Natural Gas Coal Petroleum Firewood Natural Gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry What particles move around the nucleus of an atom and are negatively charged? Positrons Electrons Neutrons Protons Positrons Electrons Neutrons Protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following organic compounds has fruity smell? Aldehyde Alcohol Ether Ester Aldehyde Alcohol Ether Ester ANSWER DOWNLOAD EXAMIANS APP
Chemistry The compound that has the least value for octane number is : N-heptane Iso-octane 2,2-dimethyl hexane 2-methyl heptane N-heptane Iso-octane 2,2-dimethyl hexane 2-methyl heptane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the strongest base in aqueous solution ? Ethylamine Ammonia Diethylamine Triethylamine Ethylamine Ammonia Diethylamine Triethylamine ANSWER DOWNLOAD EXAMIANS APP
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