Answer: A) Aditya Puri Explanation: American financial magazine Barron's has listed the name of HDFC Bank Managing Director Aditya Puri’s name in its list of world’s 30 best CEOs. He holds the 23rd position in the list beating social media giant Facebook’s CEO Mark Zuckerberg who is listed on the 30th spot.

Answer: C) Amazon Explanation: 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.

Answer: B) erosion Explanation: Process by which sediment is removed from its source is called Erosion.

Answer: B) Dry Ice Explanation: Dry ice or Cardice is the solid form of Carbon dioxide.   1. It has an advantage of lower temperature than the water ice and doesn't leave any residue.   2. The reason why it is called as Dry ice is because unlike the normal ice, it won't melt into liquid form. It directly evaporates into the air as gas. That is Solid to gas form passing through liquid state is a phenomenon called as Sublimation.   3. The primary use of dry ice is as cooling agent.

Answer: A) Bangalore Explanation: Bengaluru has became the second city in the country, and the first in south India, to have a full-fledged Metro rail in operation following the opening of a final 12-km section of the 42-km first phase of the Metro project. The first phase, comprising an 18-km east-west line and a 24-km north-south line, built at a cost of Rs 13,845 crore, was dedicated to the nation by President Pranab Mukherjee at an event in Bengaluru.

Answer: D) Odisha Explanation: 12 year old Padmalaya Nanda from Odisha has created history by becoming the youngest girl to bag the two "Little Miss Universe Internet 2017" and "Little Miss Actress" crowns at the 'Little Miss Universe-2017' at port city of Batumi in Georgia. Padmalaya Nanda, who studies in the 8th standard at a school in Cuttack, Odisha, bagged the crowns at the finale of the little Universe 2017, held at port city of Batumi in Georgia on June 4, 2017.

Answer: D) Vistadome coach train Explanation: Vistadome coach train flagged off in April 2017 is routed between Visakhapatnam to Araku valley station.