Sound travesl with a different speed in different media. In what order does the velocity of sound increase in these media?

1. Which of the following economy has been rated as the freest economy in the world for the 17th consecutive year?
Singapore
Hong Kong
United States
South Korea

Ans: Hong Kong

2. Christine Lagarde, who recently headed the G-20 meeting of Finance Ministers and Governors of Central Banks, Is the Finance minister of which among the following countries?
Australia
France
Italy
Germany

Ans: France

3. Who won womens single championship in French Open 2011?
Victoria Azarenka
Li Na
Andrea Petkovic
Maria Sharapova

Ans: Li Na

4. Sound travesl with a different speed in different media. In what order does the velocity of sound increase in these media?
Water, iron and air
Iron, air and water
Air, water and iron
Air, water and iron

Ans: Air, water and iron

5. In 2008, Speedo launched the LZR Racer suit, a swimsuit made from high-technology swimwear fabric, developed in association with NASA. Since its debut, how many world records have been broken by swimmers wearing the LZR Racer?
39
45
59
62

Ans: 62