hi are these available,n are they both 11th n 12th botany n zoology?

physics ki hai module

@shimu_pari apne jo offer kiya hai woh pura amount mujhe recieve hoga ya freeup isme deduct krega delivary ka kuch amount? because jo maine 140 price dala hai isme free up 40 rupees kat ga ka delivery ka and I will recieve 100 only and apka offer bhi utne ka hai so if same happens in that I will be receiving 65 only

whixh year?

is it for both std11&12th ?