CFCl₃ is responsible for the decomposition of ozone to oxygen. Which of the following reacts with ozone to form oxygen ?

What is the correct order of occurrence (% by weight) in air of Ne, Ar and Kr ?

Observe the following statements :<br><br>I.&nbsp;&nbsp; Bleaching&nbsp;&nbsp; powder&nbsp;&nbsp; is&nbsp;&nbsp; used&nbsp;&nbsp; in&nbsp;&nbsp; the preparation of chloroform.<br>II.&nbsp; Bleaching powder decomposes in the presence ofCoCl2 to liberate 02.<br>III.Aqueous KHF₂ is used in the preparation of fluorine.<br>The correct combination is :

Hydrolysis of NCI₃ gives NH₃ and X. Which of the following is X ?

&nbsp;Fluorine reacts with dilute NaOH and forms a gaseous product A. The bond angle in the molecule of A is

The type of bonds present in sulphuric anhydride

Which pair of oxyacids of phosphorous contain ‘P - H\' bonds

SiCl₄ on hydrolysis forms X and HCI. Compound X loses water at 1000^oC and gives Y. Compounds X and Y respectively are <br>

Aluminium reacts with NaOH and forms compound X. If the coordination number of aluminium in X is 6, the correct formula of X

Which of the following is the anhydride of HNO₃