Answer: D) Sirohi in Rajasthan Explanation: A big bed of rock salt with the top portion of the bed containing potash (though not the variety used as ferilizer) has been discovered in Thar Desert at a depth of 100 metres. A massive belt of lead and zinc has been found in the Agucha area, while gold bearing rocks have been discovered in the Tuensang district of Nagaland.

Answer: D) India Explanation: Indian teen Rifath Sharook from Tamil Nadu has designed the world’s lightest & smallest satellite named “KalamSat”. The satellite weighs only 64 grams and will be launched by NASA on June 21, 2017. With this, he will become the first Indian student to have his experiment launched by NASA. The main role of the satellite will be to demonstrate the performance of 3-D printed carbon fibre. The satellite has been designed in a way which will have a 240-minute mission in space and will operate for 12 minutes in a micro-gravity environment of space.

Answer: A) 567 Explanation: Here the given numbers are  567  284  696  865  738 When 1 is added to the last digit of each of the above numbers, it becomes as follows : 568  285  697  866  739 After reversing the order of digits , we get 865  582  796  668  937 Now , when the numbers are arranged in ascending order their order becomes as follows: 582  668  796  865  937 Hence , the fourth number is 865 (a number formed by 567). Therefore option(1) is correct answer.