236: Pumice is derived from:
(a) Volcanic rock
(b) Sedimentary rock
(c) Igneous rock
(d) Acid lava
237: In India, how many States share the coastline?
(a) 9
(b) 10
(c) 7
(d) 8
Explanation:
In India, 9 States share the coastline: Gujarat, Andhra Pradesh, Orissa, Maharashtra, West Bengal, Tamil Nadu, Kerala, Karnataka, Goa.
238: Consider the following temperature and rainfall data :
Month Temperature degree C Rainfall cm
January 6.7 14.0
February 6.7 13.2
March 7.2 11.4
April 8.9 9.4
May 11.1 8.1
June 13.9 8.1
July 15.0 9.6
August 15.0 12.2
September 13.9 10.4
October 11.1 14.4
November 8.9 14.0
December 7.8 16.8
The climate to which this data pertains is
(a) St. Lawrence type
(b) China type
(c) West European type
(d) Mediterranean type
Explanation:
According to the given data - the climate is Mediterranean type. In this type, winter rainfall is a typical character. Maximum rainfall occurs from October to February.
239: The term "sixth mass extinction/sixth extinction" is often mentioned in the news in the context of the discussion of
(a) Widespread monoculture practices in agriculture and large-scale commercial farming with indiscriminate use of chemicals in many parts of the world that may result in the loss of good native ecosystems.
(b) Fears of a possible collision of a meteorite with the Earth in the near future in the manner it happened 65 million years ago that caused the mass extinction of many species including those of dinosaurs. .
(c) Large scale cultivation of genetically modified crops in many parts of the world and promoting their cultivation in other parts of the world which may cause the disappearance of good native crop plants and the loss of food biodiversity.
(d) Mankind's over-exploitation/misuse of natural resources, fragmentation/loss of natural habitats, destruction of ecosystems, pollution and global climate change.
240: The length of its day and the tilt of its axis are almost identical to those of the earth. This is true of
(a) Uranus
(b) Neptune
(c) Saturn
(d) Mars