HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Chalcogens belongs to p-block. Give reason.

Write the reason for the anomalous behaviour of Nitrogen.

Write the molecular formula and structural formula for the following molecule.

Nitric acid

Write the molecular formula and structural formula for the following molecule.

Dinitrogen pentoxide

Write the molecular formula and structural formula for the following molecule.

Phosphoric acid

Write the molecular formula and structural formula for the following molecule.

Phosphine

Write the valence shell electronic configuration of group-15 elements.

Give two equations to illustrate the chemical behaviour of phosphine.

Give a reaction between nitric acid and a basic oxide.

What happens when PCl₅ is heated?

Complete the following reaction.

\[\ce{NaNO2 + HCl ->}\]

Complete the following reaction.

\[\ce{P4 + NaOH + H2O ->}\]

Complete the following reaction.

\[\ce{Mg + HNO3 ->}\]

Complete the following reaction.

\[\ce{AgNO3 + PH3 ->}\]

Complete the following reaction.

\[\ce{KClO3 ->[\Delta]}\]

Sc (Z = 21) is a transition element but Zinc (z = 30) is not because

Which of the following d-block element has half-filled penultimate d sub shell as well as half-filled valence sub shell?

Among the transition metals of 3d series, the one that has highest negative `("M"^(2+)/"M")` standard electrode potential is

Explain the oxidation states of 4d series elements.

Give the difference between double salts and coordination compounds.