The monthly salary of an unmarried person is 66,000. He monthly deposited 10% of his salary in Investment Trust (CIT) and pays Rs 350,000 annually for insurance premium. According to tax rate giv

$$
\text{Annual Income} = \text{Monthly Salary} \times 12
$$
$$
\text{Annual Income} = \text{Rs } 66,000 \times 12
$$
$$
\text{Annual Income} = \text{Rs } 792,000
$$
His total annual income is $\boxed{\text{Rs } 792,000}$.

$$
\text{Monthly CIT Deposit} = 10\% \times \text{Rs } 66,000
$$
$$
\text{Monthly CIT Deposit} = 0.10 \times \text{Rs } 66,000 = \text{Rs } 6,600
$$

$$
\text{Yearly CIT Deposit} = \text{Rs } 6,600 \times 12
$$
$$
\text{Yearly CIT Deposit} = \text{Rs } 79,200
$$
The amount deposited in CIT yearly is $\boxed{\text{Rs } 79,200}$.

Total Annual Income = Rs 792,000 (from part a)  
Total Deductions = Yearly CIT Deposit + Annual Insurance Premium  
Total Deductions = Rs 79,200 + Rs 350,000  
Total Deductions = Rs 429,200

$$
\text{Taxable Income} = \text{Total Annual Income} - \text{Total Deductions}
$$
$$
\text{Taxable Income} = \text{Rs } 792,000 - \text{Rs } 429,200
$$
$$
\text{Taxable Income} = \text{Rs } 362,800
$$
His total taxable income is $\boxed{\text{Rs } 362,800}$.

Taxable Income = Rs 362,800 (from part c)  
According to the tax rate table:

$$
\text{Tax Payable} = 1\% \times \text{Taxable Income}
$$
$$
\text{Tax Payable} = 0.01 \times \text{Rs } 362,800
$$
$$
\text{Tax Payable} = \text{Rs } 3,628
$$
He pays $\boxed{\text{Rs } 3,628}$ in tax in a year.