Regarding calculation of income tax

Section 112 (1)

"Provided that where the total income as reduced by such long-term capital gains is below the maximum amount which is not chargeable to income-tax, then, such long-term capital gains shall be reduced by the amount by which the total income as so reduced falls short of the maximum amount which is not chargeable to income-tax and the tax on the balance of such long-term capital gains shall be computed at the rate of twenty per cent"

Refer clause (a) of sub-section (1) of section 112.