Chemistry The natural source of hydro-carbon is Coal Biomass Crude oil Carbohydrates Coal Biomass Crude oil Carbohydrates ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sea weeds are important source of Iron Iodine Chlorine Bromine Iron Iodine Chlorine Bromine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals is not a pollutant ? Aluminium Arsenic Mercury Lead Aluminium Arsenic Mercury Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The resources which can be used continuously, year-after -year are called Abiotic Biotic Renewable Non-renewable Abiotic Biotic Renewable Non-renewable ANSWER DOWNLOAD EXAMIANS APP
Chemistry Poison used for killing rats is Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Magnesium phosphide (Mg3P2) Calcium phosphide (Ca3P2) Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Magnesium phosphide (Mg3P2) Calcium phosphide (Ca3P2) ANSWER DOWNLOAD EXAMIANS APP
Chemistry The first metal used by a man was Copper Bronze Silver Brass Copper Bronze Silver Brass ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS