Question

Difference between cabinet minister and state minister in india

Answer 1

A Cabinet minister or a Union minister is the person who commands  the utmost authority of the concerned ministry. He/she is appointed by the President following a consultation with the Prime Minister. When it comes to eligibility, the individual has to be a member of either of the two houses of the Parliament (Lok Sabha or Rajya Sabha). A Cabinet Minister is  the head of a particular ministry such as Education, Health, Home, Foreign, etc.

State Minister

A Minister of State works under a Union Minister.The MoS reports to the Cabinet Minister. To be precise, he/she is the junior member who works in close coordination with a Union Minister . 
Their activities involve day-to-day functioning of ministry and taking care of the state-centric functioning of a ministry.