2176: The marine animal called dugong which is vulnerable to extinction is a/an
(a) Shark
(b) Mammal
(c) Amphibian
(d) Bony fish
2177: What happens when the temperature of water falls from 30°C and 0°C?
(a) The volume of ice formed will be less than volume of water
(b) The volume of ice formed will be more than the volume of water
(c) Water will not freeze at 0°C
(d) None of the above
2178: With reference to the river Luni, which one of the following statements is correct?
(a) It flows into Gulf of Khambhat
(b) It flows into Gulf of Kuchchh
(c) It flows into Pakistan and merges with a tributary of Indus
(d) It is lost in the marshy land of the Rann of Kuchchh
2179: In typhoid which of the following drugs is administered?
(a) Chloromycetin
(b) Penicillin
(c) Sulphonamide
(d) Tetracycline
2180: Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above add carbon dioxide to the carbon cycle on Earth
(a) 1 and 4 only
(b) 2 and 3 only
(c) 2, 3 and 4 only
(d) 1, 2, 3 and 4