The Megaliths of South India are mainly associated with (a) Mesolithic age (b) Neolithic age (c) Chalcolithic age (d) Iron age

(b) Inamgaon

(a) Jorwe culture

(b) Mahwa culture 

(d) Sakambhari

(a) Chalcolithic age

(a) In the Mesolithic age 

(c) 3  4  1  2 

Let Shobo’s age be x years. Therefore, his mother’s age will be 6x years. According to the given question, After 5 years.Shobo's age = Shobo's mother's present age/3 x + 5 = 6x/3 x +...

(i), (iv) (i) Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast. (iv) Zr and Ti are purified by van Arkel method.

Fe2O3 + 3C → 2Fe + 3CO Limestone is added as flux and sulphur, silicon and phosphorus change to their oxides and pass into the slag.