286: Assertion (A):
In the periodic table of chemical elements, electron affinity is always found to increase from top to bottom in a group.
Reason (R):
In a group, the atomic radial generally increase from top to bottom.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is NOT the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
287: Chlorophyll contains:
(a) Beryllium
(b) Calcium
(c) Magnesium
(d) Strontium
288: Which one of the following pairs is not correctly marched?
(a) Seikan Rail Tunnel : China
(b) Appalachian Trail : USA
(c) Petronas Towers : Malaysia
(d) Rogun Dam : Tajikistan
289: Which one of the following statements correct?
(a) Alliance Air is a wholly-owner subsidiary of Indian Airlines
(b) The Airports Authority of Indian manages seven of the country international airports
(c) The Airports Authority of India is the regulatory organisation for enforcing civil air regulations in India
(d) It is the function of Directorate General of Civil Aviation to plan and construct runways and termination buildings and to provide air safety services
290: The Sixth and the Eighth Five-Year Plans covered the period 1980-85 and 1992-97 respectively. The Seventh Five-Year Plan covered the period
(a) 1987-92
(b) 1986-91
(c) 1985-90
(d) 1988-94