271. In which of the following year was the mining of coal started in India?
272. Which of the following is India’s biggest dam?
a) Bhakra Nangal
d) Pong Dam
Answer: Bhakra Nangal
273. On which river is the Pong Dam hydro electric power project built?
274. In India which crop is sown on the largest area?
275. Bakra Nangal is a joint project of Haryana, Punjab and Rajasthan. On which river is this built?
276. On which river is the Hirakud dam built?
277. On which river is the Tehri dam built?
278. Which Indian state leads in the production of rubber?
a) Tamil Nadu
279. Which Indian state tops in the production of gypsum?
280. Into how many PIN code zones is India divided?