Questions

(a) refers to political importance and (b) to economic importance. Out of (c) and (d), (c) is more important.

Waterloo

Karanji lake is artificial fresh water lake built in 1362.

QUEUE is the only word with 5 letters but sounds like one letter 'Q'.

The U.S. e-commerce giant, Amazon has been awarded a patent for launching a giant flying warehouse that would acts as a launch pad for drones to deliver items within minutes.The patent reveals plans for setting up an “Airborne Fulfillment Center” (AFC) such as an Airship or Blimp, floating at an altitude of around 45,000 and stocked with lots of products especially in area where the demand for certain items is expected to be high. When a customer places an order, a drone or unmanned aerial vehicles (UAV) will fly down and deliver the package. The patent claims that this would require little or no power because the drone would be gliding down rather than having to take off and land.