HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Bauxite has the composition

What are the differences between minerals and ores?

Give the uses of zinc.

Oxidation state of carbon in its hydrides

The stability of the +1 oxidation state increases in the sequence

Write a short note on anomalous properties of the first element of the p-block.

Describe briefly allotropism in p-block elements with specific reference to carbon.

Give one example for the following.

Prictogen

Give one example for the following.

Chalcogen

Write a note on the metallic nature of p-block elements.

In which of the following, NH₃ is not used?

Which is true regarding nitrogen?

An element belongs to group 15 and 3^rd period of the periodic table, its electronic configuration would be

Solid (A) reacts with strong aqueous NaOH liberating a foul smelling gas (B) which spontaneously burn in air giving smoky rings. A and B are respectively

On hydrolysis, PCl₃ gives ____________.

P₄O₆ reacts with cold water to give ____________.

The basicity of pyrophosphorous acid (H₄P₂O₅) is ____________.

The molarity of given orthophosphoric acid solution is 2M. its normality is ____________.

Among the following, which is the strongest oxidizing agent?

What is the inert pair effect?