Investment in sole proprietorship

1st Answer : Yes you can show it as drawings and infact you should show it as drawings as it is not your core business.

2nd Answer: Capital(Investment) loss can be shown in profit and loss account only for the purpose of maintaining accounts but for incometax purpose Capital Gains and Losses are always shown seprately under head Capital Gain instead of PGBP thats why you did not find such column in Profit and Loss A/c while filing Incometax Tax Return.

u r right.... but in respect to ur second answer, i think total business income(net profit) after taking into account all heads of income is bifurcated into cap gain/loss etc & business inc for the purpose of tax..... in itr4 p/l ac there is a coloumn for profit on sale of investments but no coloumn for loss on investments..... so either we hv to fill a negative value therein or show this loss in other expenses... not sure tough