150 words means how many pages of board exam copy

use google

1 or 2 pages are way enough.

1 or 1.5 pages

lets take that you almost writes 7 words per line 

then 

you have to write

150 /7

= 21. something

which is almost equal to one page of cbse board paper

so you can write one page maximum ..

hope it helps..

I think one page is enough..