Which of the following does not corrode when exposed to the atmosphere?
gold
copper
sodium
zinc

Which of the following does not increase, when people are healthy

Which of the following is the uppermost region of the atmosphere ?

Which of the following noble gas is not present in atmosphere ?

Which of the following product is formed , when ether is exposed to air :

Which of the following componds does not evolve oxygen when heated alone ?

Which of the following does not produce any gaseous product when reacts with water?

Which of the following process does not increase the amount of CO_(2) in atmosphere?

Which of the following increases the amount of CO_(2) in atmosphere ?

Which of the following statements regarding the atmosphere are true ?

Which of the following is formed from proteinoids exposed to water , has properties similar to tooday's cells?