p-Block Element...

Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q. 

Which is incorrect statement?

In earth’s crust, sulphur exists as

The element used in the production of photocells and solar cells and also used in zerox machines is

The number of bond pairs and lone pairs in rhombic sulphur molecule are

Which has lowest bond energy (single bond)?

Harmful UV radiations emitted from the sun are prevented from reaching the earth by the presence of ozone in the

Point out the incorrect statement among the following.

The correct order of thermal stability of the hydrides of group 16 elements is

When O₂ changes to 

Increasing order of oxidation number of oxygen is found in

Direction (Q. Nos. 11-13) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q. 

Match the Column I with Column II and mark the correct option from the codes given below.

Match the Column I with Column II and mark the correct option from the codes given below.

Match the Column i with Column II and mark the correct option from the codes given below.

Direction : This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement I : Oxygen is more electronegative than sulphur, yet H₂S is acidic, while H₂O is neutral.

Statement II : H— S bond is weaker than O—H bond.