Answer: B) Preamble Explanation: The Preamble proclaims the solemn resolution of the people of India to constitute India into a 'Sovereign socialist secular democratic republic'.

I am History.   Yes, history refers to all the past, but we can create history in the presentand it cannot be polluted in the future.

Answer: C) 2:1 Explanation: Given rate of wheat at cheap = Rs. 2.90/kg Rate of wheat at cost = Rs. 3.20/kg Mixture rate = Rs. 3/kg Ratio of mixture =            2.90                              3.20                               3 (3.20 - 3 = 0.20)            (3 - 2.90 = 0.10)   0.20 : 0.10 = 2:1   Hence, wheat at Rs. 3.20/kg be mixed with wheat at Rs. 2.90/kg in the ratio of 2:1, so that the mixture be worth Rs. 3/kg.

Answer: A) Microsoft Explanation: Microsoft has acquired Flipgrid, an education start-up with an app that lets students record and share videos on specific topics with their classmates.   Microsoft is making Flipgrid free of charge.

Answer: B) June 21 Explanation: The World Music Day is celebrated across the world on 21 June.   The day is also known as 'Fete de la Musique' after a music festival that began in France in 1982.   This Day was first celebrated on 21st June 1982.

Answer: D) Cuba Explanation: Havana is the capital city of Cuba. It's currency is Cuban Peso.

Answer: C) 289 Explanation: Here the given number series is 270, 261, 279, 252, 289, 243 270 - 9 = 261 261 + 18 = 279 279 - 27 = 252 252 + 36 = 288 (not equals to 289) 288 - 45 = 243   Hence, the odd number in the given number series is 289.

Answer: A) 72 km Explanation: Rate of her upstream = 12/2.5 = 4.8 km/hr Then, ATQ Rate of downstream = 4.8 x 3 = 14.4 km/hr   Hence, the distance she covers downstream in 5 hrs = 14.4 x 5 = 72 kms.