∝C (i) in 0-100 k C increases, so R increases but not linearly (ii) Δq = mCΔT as C is more in (400 k - 500 k) then (0- 100 k) so heat is increasing. (iii) C remains constant so there no change in R from (400 k -500 k) (iv) C is increased so R is increased in range (200 k -300 k)