Chemistry Earth’s atmosphere is an envelope of gases extending to a height of 100 km 200 km 150 km 300 km 100 km 200 km 150 km 300 km ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant inert gas in the atmosphere is Argon Krypton Helium Neon Argon Krypton Helium Neon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal used for making aircrafts and rockets is Lead Nickel Aluminium Copper Lead Nickel Aluminium Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry In deep-sea diving, divers use a mixture of gases consisting of oxygen and Hydrogen Helium Nitrogen Argon Hydrogen Helium Nitrogen Argon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following minerals is found in pure form? Iron Bauxite Manganese Copper Iron Bauxite Manganese Copper ANSWER DOWNLOAD EXAMIANS APP