Answer: B) Sole Explanation: All shoes have a sole of some sort.Not all shoes are made of leather (choice b); nor do they all have laces (choice c).Walking (choice d) is not essential to a shoe.

Answer: A) 4 kmph Explanation: Speed of the current = 24-16/2 = 8/2 = 4 km/hr.

Answer: B) 180 Explanation: 4 x 27 x 3125 = 22 × 33 × 55 ;   8 x 9 x 25 x 7 = 23 × 32 × 52 × 7   16 x 81 x 5 x 11 x 49 = 24 × 34 × 5 × 11 × 72   H.C.F = 22 × 32 × 5 = 180.

Answer: C) 042 Explanation: From all the hints given,  only 042 satisfies and it unlocks the key.

Answer: A) detecting and locating the position of objects such as Aeroplanes Explanation: RADAR - RAdio Detection And Ranging. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects.    Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.   Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.

Answer: A) Smt. Malvika Sinha Explanation: The Reserve Bank of India has appointed Smt. Malvika Sinha as Executive Director (ED). As Executive Director Smt. Sinha will look after Foreign Exchange Department, Department of Government and Bank Accounts and Internal Debt Management Department. Smt. Malvika Sinha holds a Masters Degree from University of Bombay and has done her Masters in Public Administration. She is also a Certificated Associate of Indian Institute of Bankers. Smt. Sinha joined Reserve Bank in 1982 and as a career central banker served in the areas of regulation and supervision, foreign exchange and Government and Bank Accounts in the Bank. Prior to being promoted as ED, Smt. Sinha was Principal Chief General Manager, Department of Co-operative Banking Supervision in the Reserve Bank.

Yes, a promise can be broken without being held.

Answer: B) Subhas Chandra Bose Explanation: The title of Father of the Nation was given to Mohan Das Karamchand Gandhi known as Mahathma Gandhi by Netaji Subhas Chandra Bose. He was the first who addressed Mahatma Gandhi as Father of the Nation on Singapore Radio on July 6, 1944.