Chemistry Acid rain is caused by the pollution of environment by Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide Carbon monoxide and Carbon dioxide Ozone and Carbon dioxide Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of CO CO2 Unburnt petrol SO2 CO CO2 Unburnt petrol SO2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of hydrogen bonds between guanine and cytosine in DNA is 1 3 2 4 1 3 2 4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is not a pollutant ? Arsenic Lead Aluminium Mercury Arsenic Lead Aluminium Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry In its reaction with silver nitrate, C2H2 shows Acidic property Reducing property Basic property Oxidising property Acidic property Reducing property Basic property Oxidising property ANSWER DOWNLOAD EXAMIANS APP
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