2101: Variations in the length of daytime and night time from season to season are due to
(a) the earth's rotation on its axis
(b) the earth's revolution round the sun in an elliptical manner
(c) latitudinal position of the place
(d) revolution of the earth on a tilted axis
2102: Consider the following pairs: Vitamin Deficiency disease
1. Vitamin C : Scurvy
2. Vitamin D : Rickets
3. Vitamin E : Night blindness
Which of the pairs given above is/are correctly matched?
(a) 1 and 2 only
(b) 3 only
(c) 1, 2 and 3
(d) None
2103: Brahmaputra is an example of ____ drainage
(a) Annular
(b) Antecedent
(c) Superimposed
(d) Radial
2104: When Leander Paes won the "mixed doubles" at the US Open in the year 2008, who of the following was his partner?
(A) Ana Ivanovic
(B) Dinara Safina
(C) Cara Black
(D) Jelena Jankovic
2105: Nanda Devi peak forms a part of
(a) Assam Himalayas
(b) Kumaon Himalayas
(c) Nepal Himalayas
(d) Punjab Himalayas