1. Which one among the following rivers does not flow into the Bay of Bengal?
a) Mahanadi
b) Cauvery
c) Tapti
d) Godavari
Answer. c) Tapti
2. Which one of the following dams is constructed across the Krishna River?
a) Ukai Dam
b) Krihnaraja Sagar Dam
c) Srisailam Dam
d) Mettur Dam
Answer. c) Srisailam Dam
3. When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because (UPSC 2011)
a) Water from soil cannot rise to aerial parts
b) Roots are starved of energy
c) Tree is infected by soil microbes
d) Roots do not receive oxygen for respiration
Answer. b) Roots are starved of energy.
The tissue just beneath the bark is called the phloem layer, which transports food from leaves to roots produced by photosynthesis.
4. A married couple adopted a male child. A few years later, twin boys were born. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is ( UPSC 2011)
a) O positive
b) A positive
c) B positive
d) Cannot be determined based on the given data
Answer. a) O positive
5. Recently, “oilzapper” was in the What is it? ( UPSC 2011)
a) It is an eco-friendly technology for the remediation of oily sludge and oil spills
b) It is the latest technology developed for under-sea oil exploration
c) It is a genetically engineered high biofuel-yielding maize variety
d) It is the latest technology to control the accidentally caused flames from oil wells.
Answer. a) It is an eco-friendly technology for the remediation of oily sludge and oil spills.
Oilzapping is a new technique using bacteria to get rid of oil spills. It is a bio-remediation technique that involves the use of oil-zapping bacteria.
ConversionConversion EmoticonEmoticon