126: Which one of the following elements is essential for the construction of nuclear reactors ?
(a) Cobalt
(b) Nickel
(c) Zirconium
(d) Tungsten
Explanation:
Zirconium is used to slowdown fast moving neutrons in Nuclear reactors.
127: Which of the following statements best describes "carbon fertilization"?
(a) Increased plant growth due to increased concentration of carbon dioxide in the atmosphere
(b) Increased temperature of Earth due to increased concentration of carbon dioxide in the atmosphere
(c) Increased acidity of oceans as a result of increased concentration of carbon dioxide in the atmosphere
(d) Adaptation of all living beings on Earth to the climate change brought about hr the increased concentration of carbon dioxide in the atmosphere
128: Which of the following is a living fossil?
(a) Blue green algae
(b) Green algae
(c) Fungus
(d) Ginkgo
129: When the alarm of your smartphone rings in the morning, you wake up and tap it to stop the alarm which causes your geyser to be switched on automatically. The smart mirror in your bathroom shows the day's weather and also indicates the level of water in your overhead tank. After you take some groceries from your refrigerator for making breakfast, it recognises the shortage of stock in it and places an order for the supply of fresh grocery items. When you step out of your house and lock the door, all lights, fans, geysers and AC machines get switched off automatically. On your way to office, your car warns you about traffic congestion ahead and suggests an alternative route, and if you are late for a meeting, it sends a- message to your office accordingly.
In the context of emerging communication technologies, which one of the following term" best applies to the above scenario?
(a) Border Gateway Protocol
(b) Internet of Things
(c) Internet Protocol
(d) Virtual Private Network
130: Two richest known sources of edible protein are
(a) Meat and eggs
(b) Some algae and other micro organisms
(c) Soyabean and groundnut
(d) Milk and leafy vegetables