Q. A ball balanced on a vertical rod is an example of -
1) stable equilibrium
2) unstable equilibrium
3) neutral equilibrium
4) perfect equilibrium
Q. ISRO has successfully launched GSAT-6A satellite from which rocket vehicle?
1) GSLV-F07
2) GSLV-F09
3) GSLV-F05
4) GSLV-F08
Q. In the grass lands, trees do not replace the grasses as a part of an ecological succession because of -
1) Water limits and fire
2) Limited sun light and paucity of nutrients
3) Insect and fungi
4) None of the above
Q. The technology used in the electronic printer is called -
1) Micro encapsulation
2) Micro technology
3) Micro array
4) Micro millimetric
Q. Which of the following can be found as pollutants in the drinking water in some parts of India?
Select the correct answer using the code given below :
1. Arsenic
2. Sorbitol
3. Fluoride
4. Formaldehyde
5. Uranium
1) 1 and 3
2) 1,2,3,4 and 5
3) 2,4 and 5
4) 1,3 and 5
Q. Which of the following is a prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone ?
1) Damage to digestive system
2) Increased liver cancer
3) Neurological disorder
4) Increased skin cancer
Q. Which of the following is not a primary contributor to the green house effect ?
1) Carbon dioxide
2) Carbon monoxide
3) Chlorofluorocarbons
4) Methane gas
Q. The increase in the concentration of CO2 in our environment in last fifty years; since 1960 is about—
1) 20%
2) 10%
3) 14%
4) 6%
Q. Which of the following are the example of Municipal and industrial discharge pipes ?
1) Nonpoint sources of pollution
2) Violations of the Clean Water Act.
3) Point sources of pollution
4) Irrigation
Q. The presence of high coliform counts in water indicate -
1) contamination by human wastes
2) phosphorus contamination
3) decreased biological oxygen demand
4) hydrocarbon contamination
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