121: What is the difference between Bluetooth and Wi-Fi devices?
(a) Bluetooth uses 2-4 GHz radio frequency band, whereas Wi-Fi can use 2-4 GHz or 5 GHz frequency band
(b) Bluetooth is used for Wireless Local Area Networks (WLAN) only, whereas Wi-Fi is used for Wireless Wide Area Networks (WWAN) only
(c) When information is transmitted between two devices using Bluetooth technology, the devices have to be in the line of sight of each other, but when Wi-Fi technology is used the devices need not be in the line of sight of each other
(d) The statement (a) and (b) given above are correct in this context
122: Which one of the following organisms can serve as a bio-fertilizer for rice crop?
(a) Blue green algae
(b) Rhizobium sp
(c) Mycorrhizal fungi
(d) Azotobacter sp
123: Who of the following Prime Ministers sent Cripps Mission to India?
(a) Neville Chamberlain
(b) Stanley Baldwin
(c) Winston Churchill
(d) James Ramsay MacDonald
124: Which one of the following is printed on a commonly used fluorescent tubelight ?
(a) 220 k
(b) 273 k
(c) 6500 k
(d) 9000 k
125: If it is 10.00 a.m. I.S.T., then what would be the local time at Shillong on 92°E longitude ?
(a) 9.38 a.m.
(b) 10.38 a.m.
(c) 10.22 a.m.
(d) 9.22 a.m.