Which of the following statements are correct regarding hydrogen? i) The largest single use of dihydrogen is in the synthesis of NH_(3). Which is used in the manufacture of HNO_(3) and nitrogenous fertilizers. (ii) It is used to reduce heavy metal oxide (iii) It is used as rocket fuel. (iv) Atomic hydrogen and oxy hydrogen torches find use for cutting and welding purpose.

Which of the following statements are correct regarding hydrogen? i)

1.	Which of the following statements are correct regarding hydrogen? i) The largest single use of dihydrogen is in the synthesis of NH_(3). Which is used in the manufacture of HNO_(3) and nitrogenous fertilizers. (ii) It is used to reduce heavy metal oxide (iii) It is used as rocket fuel. (iv) Atomic hydrogen and oxy hydrogen torches find use for cutting and welding purpose.
Answer» i, III i, II i, ii, iv i, ii, iii, iv Answer :D