1.The largest natural number which exactly divides the product of any four consecutive natural numbers is
(A) 120
(B) 24
(C) 12
(D) 6
2. If 520 mangoes can be bought for ` 600, how many can be bought for ` 1500 ?
(A) 1040
(B) 1200
(C) 1300
(D) 1560
3. In an examination 86% of the candidates passed and 224 failed. How many candidates appeared for the exam ?
(A) 800
(B) 1540
(C) 1600
(D) 3136
4.Identify the element which shows variable valency. ?
(A) Helium
(B) Magnesium
(C) Sodium
(D) Iron
5. The speed of chemical reaction between gases increases with increase in pressure due to an increase in
(A) Number of molecules
(B) Volume
(C) Concentration
(D) Distance between molecules
6.The scientific principle behind the working of a transformer is
(A) Mutual induction
(B) Transmission
(C) Rectification
(D) Amplification
7. Nucleus is discovered by
(A) Robert Brown
(B) Golgi
(C) Bowman
(D) Fountain
8.Acid rain is due to
(A) O3 and dust
(B) SO2 and NO2
(C) SO3 and CO
(D) CO2 and CO
9. Green house effect is mainly due to
(A) CH4
(B) SO2
(C) CFC
(D) CO2
10. Which of the following is a water soluble Vitamin ?
(A) Calciferol
(B) Tocoferol
(C) Ascorbic acid
(D) Phyloquinone
11. Which Article of the Indian Constitution empowers the President of India to declare financial emergency ?
(A) Article 358
(B) Article 359
(C) Article 360
(D) Article 363
12. ‘The Grand Design’ is a work of
(A)Stephen Hawking
(B) John Gribbin
(C)Marika Taylor
(D) Dennis W. Sciama
13. The Chairman of the Public Accounts Committee is being appointed by
(A) The President
(B) The Vice President
(C) Prime Minister
(D) The Speaker of the Lok Sabha
14. Choolannur Bird Sanctuary is located at
(A) Palakkad
(B) Idukki
(C) Thrissur
(D) Pathanamthitta
15. Which of the following Article of the Indian Constitution guarantees complete equality of men and women ?
(A) Article 25
(B) Article 21
(C)Article 18
(D) Article 15