Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

271.

Electronic configuration of only one p-block element is exceptional. One molecule of that element consists of how many atoms of it?

272.

Which oxyacid of sulphur contains S-S single bond?

273.

Which among the following group 15 element forms most stable pentavalent compound?

274.

What is the basicity of orthophosphorous acid?

275.

Which oxoacid of sulphur contains S-S bond in its structure?

Chlorine

The oxyacid of chlorine atom has tripositive oxidation state of Cl. e.g. HClO₂ ; Cl is in +3 oxidation state.

Therefore, chlorine forms an oxyacid that contains the halogen atom in tripositive oxidation state.

277.

Identify the compound, in which phosphorus exists in the oxidation state of +1.

278.

In preparation of sulphuric acid from sulphur dioxide in lead chamber process. What substance is used as a catalyst?

279.

Which halogen has the highest value of negative electron gain enthalpy?

280.

Freon 12 is manufactured from CCl₄ by