Four points P(0, 1), Q(0, −3), R(−2, −1), and S(2, −1) represent the vertices of a quadrilateral. What is the area enclosed by the quadrilateral?

In a class of five students P, Q, R, S and T, only one student is known to have copied in the exam. The disciplinary committee has investigated the situation and recorded the statements from the students as given below. Statement of P: R has copied in the exam. Statement of Q: S has copied in the exam. Statement of R: P did not copy in the exam. Statement of S: Only one of us is telling the truth. Statement of T: R is telling the truth. The investigating team had authentic information that S never lies. Based on the information given above, the person who has copied in the exam is

The drilling technique applicable for mineral exploration is

Identify the WRONG statement: Break-even stripping ratio

Which one of the following is NOT a notifiable disease as per Indian mining legislation?

If the ambient lapse rate is higher than the dry adiabatic lapse rate, the atmosphere is

Identify the WRONG statement: The application of controlled air recirculation in an underground work place can

The correct order of pavement layers for a haul road from top to bottom is

A mining company produces iron ore and sells to another company. Royalty to be paid is on the basis of

The cost of a screw compressor with an estimated life of 15 years is ₹21,00,000. If the depreciation of the compressor charged, using ‘sum-of-the-years-digits’ method, at the end of 4th year is ₹2,00,000, the salvage value, in ₹ is ______. (round off to one decimal place)