Answer: D) Baisakhi Explanation: The harvest festival of Baisakhi popularly celebrated in North India coincides with the Songkran festival of Thailand, the Thingyan in Myanmar and the Aluth Avurudda in Sri Lanka. In all the latter three festivals, the coming of a New Year is the central theme and involves various indigenous ways of celebrations.

Answer: D) 100 Explanation: 9 tens 10 ones equals => 9 x 10 + 10 x 1 => 90 + 10 => 100.

Answer: B) 585 Explanation: The smallest possible number of books = L.C.M of 5, 9 and 13.Therefore, L.C.M of 5,9 and 13 is = 5 x 9 x 13 = 585.

Answer: C) 437 Explanation: Except 437 all others are prime numbers.

Answer: A) Zinc Explanation: Zinc metal is used for Galvanizing Iron.   Galvanization or Galvanizing :: Galvanization is the process of applying a protective zinc coating to steel or iron, to prevent rusting. Most common method of Galvanization is Hot-Dip Galvanizing in which parts are submerged in a bath of molten zinc.