The expected answers were:

Primary Cell	Secondary Cell
Cheaper	Very expensive
Small in size	Big in size
Has a short life span	Comparatively long life
Cannot be recharged	Is rechargeable

 

 

 

               (b)    Types of Primary cells

1. Leclanche cell
2. Daniel cell
3. Simple voltaic cell

         (c) Sulphuric acid (H2SO4)

          As reported, as many candidates as attempted this recall question responded correctly.

The question was on Power Supply. The question was popular and candidates’ performance was good.