1086: The resinous substance, shellac is obtained from
(a) Crude oil
(b) The bark of a tree
(c) An insect
(d) Distillation of wood
1087: Which one of the following is the best strategy for environment-friendly sustainable development in Indian agriculture?
(a) Expansion of cultivable land, increased use of superphosphate, urea and effective biocides
(b) Wider popularization of high-yielding crop varieties, better and more frequent irrigation and increased frequency of aerial sprays of inorganic fertilizers and pesticides
(c) Mixed cropping, organic manures, nitrogen-fixing plants and pest resistant crop varieties
(d) Improved farm implements and machinery, use of potent insecticides to minimise post-harvest grain losses and mono culture cropping practices
1088: Which of the following professional (s) are more likely to run the risk of a permanent change in their cell's DNA ?
I. Researchers using carbon-14 isotope
II. X-ray technician
III. Coal miner
IV. Dyer and Painter
Select the correct answer by using the codes given below :
(a) II alone
(b) I, II and III
(c) I, II and IV
(d) I, III and IV
1089: In the Union Budget 2011-12, a full exemption from the basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the importance of this material?
1. Unlike traditional asphalt, bio-asphalt is not based on fossil fuels.
2. Bioasphalt can be made from non- renewable resources.
3. Bioasphalt can be made from organic waste materials.
4. It is eco-friendly to use bioasphalt for surfacing of the roads.
Which of the statements given above are correct?
(a) 1, 2 and 3 only
(b) 1, 3 and 4 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4
1090: How many members can be nominated to the Lok Sabha by the President?
(a) 2
(b) 4
(c) 5
(d) 12