Hi RAJESH KOUL,
Though you have not provided sufficient information like cause of death, duration of employment etc, still the best answer would be based on my guess that your company is meeting all the compliances, the nominees of the worked are entitled for pension from provident fund department including the children below than 18 years till they meet this age criteria, claim of provident fund to the nominee can be done, funeral expenses of the deceased employee from ESI.
If it was a death on work then the company have to pay the compensation as per Workmen compensation act 1923. The amount of compensation to be paid depends on the nature of the injury and the average monthly wages and age of workmen and it would be decided by the assistant labour commissioner of your area. Hope you have take WC policy and informed the labour department about the death.