Questions

The first oil well was dug in 1859. The oil production has since declined but it retains its name for high grade oil

All India Kisan Sabha was founded in Lucknow in 1936. Swami Sahajanand Saraswati was elected as its first President.

Cobalt therapy or cobalt-60 therapy is the medical use of gamma rays from the radioisotope cobalt-60 to treat conditions such as cancer.

Cobalt 60 is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. It is produced artificially in nuclear reactors.

The given sentence is in simple past. No improvement required.

Nuakhai or Nuankhai is an agricultural festival mainly observed by people of Odisha and Chhattisgarh in India. Nuakhai is observed to welcome the new rice of the season.

A real time process is a process that must respond to the eventswithin a certain time period. A real time operating system is an operating system that can run realtime processes successfully.

The concrete slump recommended for beams and slabs is 30 to 125 mm.

A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload.