During Justice party rule in the Madras Presidency , who introduced Free Midday Meals Scheme at Thousand Light , Chennai ?

Arrange the following fertilisers according to the decreasing order of their nitrogen content
I. Ammonium sulphate
II. Ammonium nitrate
III. Potassium nitrate
IV. Urea

Gerontology is the study of

Helium is used for respiration in deep water instead of nitrogen because

Which of the following rivers flows westward ?

Which of the following is correct?
1. Shore temple of : Pallavas Mahabalipuram
2. Kailasa temple of : Rashtrakutas Ellora
3. Khajuraho temples : Chandellas

Finance Commission is appointed after every

Another name of Vitamin C is

First Chief Minister of Tamilnadu after Independence

Commonweal Party in Tamilnadu was founded by