1. In botany, what does a potometer measure?

2. How did Moscow's State Tretyakov Gallery make the front pages of Indian newspapers on May 30?

3. Which is the smallest and the most densely populated country in Central America?

4. Which former President of an African country was recently sentenced to life imprisonment for his role in the killing of demonstrators during the 2011 revolution?

5. Which U.S. State's flag has the Union Jack on it?

6. Noted actor and broadcaster Stephen Fry called BBC's coverage of which recent royal event as “eggier and cheesier than a collapsed soufflé”?

7. Which dashing fictional character's name is Spanish for fox?

8. Which rare astronomical event, the last for the 21st century, occurred between 22:09 UTC on June 5 and ended at 04:49 UTC on June 6?

9. What is the common word used for a musical instrument that makes a sound with vibrating strings?

10. How did Solar Impulse make news on June 4?

11. According to ancient and medieval scientists, which element made up the region of the universe above the terrestrial sphere?

12. S/2010 J 2 unveiled recently is reckoned to be the smallest natural satellite of which planet and possibly the smallest in the Solar System?

13. Brick, Dunlop or Excelsior are all types of which edible product?

14. What big decision was taken on the World IPv6 Day that could impact the Internet usage?

15. Which Asian nation was the first to issue ‘talking' postage stamps in the form of mini plastic records?

Answers: 1. The rate of water absorbed by a leafy shoot; 2. Viswanathan Anand retained his World Chess Championship crown on that day; 3. El Salvador; 4. Hosni Mubarak; 5. Hawaii; 6. The Thames river pageant; 7. Zorro; 8. Transit of Venus' 9. Chordophone; 10. It became the first solar powered plane in the world to make an inter-continental flight; 11. Aether (or Ether); 12; Jupiter; 13. Cheese; 14. Trillions of new free addresses on the Internet were released to accommodate the growing numbers of websites on the WWW; 15. Bhutan.