Q16 of 74 Page 185

Which of the following does not react with oxygen directly?
Zn, Ti, Pt, Fe

Pt is a noble metal (inert) and does not react with oxygen, whereas Zn, Ti, and Fe react with quickly with oxygen.

Write the order of thermal stability of the hydrides of Group 16 elements.

Why is H₂O a liquid and H₂S a gas?

Complete the following reactions:

(i) C₂H₄ + O₂→

(ii) 4Al + 3 O₂→

Why does O₃ act as a powerful oxidizing agent?

Which of the following does not react with oxygen directly?Zn, Ti, Pt, Fe