Complete the following chemical equations:

A.

B.

From the given cells:

Lead storage cell, Mercury cell, Fuel cell and Dry cell

Answer the following:

A. Which cell is used in hearing aids?

B. Which cell was used in Apollo Space Programmed?

C. Which cell is used in automobiles and inverters?

D. Which cell does not have long life?

When chromite ore is fused with NaOH in presence of air, a yellow coloured compound (A) is obtained which on acidification with dilute sulphuric acid gives a compound (B). Compound (B) on reaction with KCl forms a orange coloured crystalline compound (C).

A. Write the formulae of the compounds (A), (B) and (C)

B. Write one use of compound (C).

When a co-ordination compound is mixed with moles of are precipitated per mole of the compound. Write

A. Structural formula of the complex.

B. IUPAC name of the complex.

For a reaction:

Rate = k

A. Write the order and molecularity of this reaction.

B. Write the unit of k.