1866: Ice skating can be used to demonstrate that when ice is under pressure, its:
(a) Melting point is lowered
(b) Melting point is raised
(c) Melting point remains unchanged
(d) Coefficient of friction with metal is reduced
1867: In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique?
1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.
2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.
3. Genetic engineering can be used to create microorganisms specifically designed for bioremediation.
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1868: If SYSTEM is written as SYSMET and NEARER is written as AENRER, then FRACTION will be coded as:
(a) Carfnoit
(b) Carftion
(c) Noitfrac
(d) Fracnoit
1869: A great landslide caused by an earthquake killed hundreds of people in January 2001 near
(a) San Salvador
(b) San Jose
(c) Managua
(d) Guatemala City
1870: The following table shows the percentage change in the consumption of electricity by five towns P, Q, R, S, T from 1986 to 1988 :
If town T consumed 500,000 units in 1986, how much did it consume in 1988 ?
(a) 371,000 units
(b) 531,100 units
(c) 551,100 units
(d) 571,100 units