1316: In the context of which one of the following arc the terms pyrolysis and plasma gasification mentioned?
(a) Extraction of rare earth elements
(b) Natural gas extraction technologies
(c) Hydrogen fuel-based automobiles
(d) Waste-to-energy technologies
1317: Which one of the following statements is not correct?
(a) Hepatitis B virus is transmitted much like HIV.
(b) Hepatitis B. unlike Hepatitis C, does not have a vaccine.
(c) Globally, the number of people infected with Hepatitis B and C viruses arc several times more than those infected with HIV.
(d) Some of those infected with Hepatitis B and C viruses do not show the symptoms for many years.
1318: The first bird is believed to have appeared on the surface of the earth
(a) 300 million years ago
(b) 200 million years ago
(c) 150 million years ago
(d) 100 million years ago
1319: The bats can fly in the dark because:
(a) They have a better vision in the dark
(b) The light startles them
(c) They produce ultrasonics
(d) None of the above
1320: The structural changes in exports means:
(a) Change in the commodities of export
(b) Increasing exports along with the imports
(c) Increasing imports
(d) Change in the commodities of imports