Chemistry Which of the following is a man-made source of air pollution ? Bacterial action in soil and swamp areas Automobile exhaust All of these Forest fire Bacterial action in soil and swamp areas Automobile exhaust All of these Forest fire ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass is made of Copper and zinc Copper and tin Copper, tin and zinc Tin and lead Copper and zinc Copper and tin Copper, tin and zinc Tin and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Air shows the property of O2 Both A and B None of these N2 O2 Both A and B None of these N2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is used to dilute oxygen in the gas cylinders used by divers ? Helium Neon Krypton Argon Helium Neon Krypton Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ? Chlorofluorocarbon Nitrous oxide Sulphur dioxide Carbon dioxide Chlorofluorocarbon Nitrous oxide Sulphur dioxide Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'laughing gas' is Nitrous oxide Nitric oxide Nitrogen pentoxide Nitrogen dioxide Nitrous oxide Nitric oxide Nitrogen pentoxide Nitrogen dioxide ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS