916: Consider the following :
1. Bluetooth device
2. Cordless phone
3. Microwave oven
4. Wi-Fi device
Which of the above can operate between 2-4 and 2-5 GHz range of radio frequency band ?
(a) 1 and 2 only
(b) 1, 2 and 4 only
(d) 3 and 4 only
(d) 1, 2, 3 and 4
917: Which one of the following comes under the jurisdiction of both the High Courts and the Supreme Court?
(a) Disputes between the Centre and the States
(b) Disputes between the States interse
(c) Protection of the Fundamental Rights
(d) Protection against the violation of the Constitution
918: An aeroplane takes off from 30° North Latitude, 50° East Longitude, and lands at the opposite end of the earth. Where does it land ?
(a) 30° North Lat., 50° West Long
(b) 30° South Lat., 50° West Long
(c) 50° North Lat., 30° West Long
(d) 30° South Lat., 130° West Long
919: Which one of the following is used as an explosive?
(a) Nitroglycerine
(b) Phosphorus trichloride
(c) Mercuric oxide
(d) Graphite
920: Consider the following countries :
1. Brazil
2. Mexico
3. South Africa
According to UNCTAD, which of the above is/are categorized as "Emerging Economies"?
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3