596: A mixed doubled tennis game I to be played between two teams (each team consists of one male and one female). There are 4 married couples. No team is to consists of a husband and his wife. What is the Maximum number of games that can be played?
(a) 12
(b) 21
(c) 36
(d) 42
597: Which one of the following pair is not correctly matched?
City : River
(a) Berlin : Rhine
(b) London : Thames
(c) New York : Hudson
(d) Vienna : Danube
598: Which of the following substances are found in the beach sands of many parts of Kerala?
1. Ilmenite
2. Zircon
3. Silimanite
4. Tungsten
Select the correct answer using the code given below :
(a) 1, 2, 3 and 4
(b) 1, 2 and 3
(c) 3 and 4 only
(d) 1 and 2 only
599: Which one of the following countries is the first country in the world to propose a carbon tax for its people to the address global warming ?
(a) New Zealand
(b) Germany
(c) Japan
(d) Australia
600: Who was the Speaker of the first Lok Sabha ?
(a) G. V. Mavalankar
(b) K. M. Munshi
(c) Hukam singh
(d) U. N. Dhebar