646: The pitch of the voice of women is in general
(a) marginally lower than that of men
(b) higher than that of men
(c) much lower than that of men
(d) the same as that of men
647: The largest reserve of Sal forests is found in:
(a) Nilgiri hills
(b) Dehradun valley
(c) The Aravallis
(d) Eastern Peninsula
648: Consider the following statements regarding Earth Hour :
1. It is an initiative of UNEP and UNESCO.
2. It is a movement in which the participants switch off the lights for one hour on a certain day every year.
3. It is a movement to raise the awareness about the climate change and the need to save the planet.
Which of the statements given above is/are correct?
(a) 1 and 3 only
(b) 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
649: With reference to the Constitution of India, which one of the following pairs is not correctly matched?
(a) Forests : Concurrent List
(b) Stock Exchanges : Concurrent List
(c) Post Office Saving Bank : Union List
(d) Public Health : State List
650: A fertile-soil, suitable for growing common crops, is likely to have a pH value of
(a) three
(b) four
(c) six to seven
(d) nine to ten