1141: 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
1142: Deserts such as the Sahara are generally found between 20° and 30° latitudes in the western parts of the continents. This is because these regions
(a) Have off-shore winds throughout the year
(b) Have warm off-shore currents
(c) Lie in the belt of the doldrums
(d) Are very hot throughout the year
1143: Consider the following statements : The Indian rupee is fully convertible
I. in respect of Current Account of Balance of Payment.
II. in respect of Capital Account of Balance of Payment.
III. into gold.
Which of these statements is/are correct ?
(a) I alone
(b) III alone
(c) I and II
(d) I, II and III
1144: The highest grade of coal, whose surface is shining and has the highest calorific value, is:
(a) Lignite
(b) Peat
(c) Bituminous
(d) Anthracite
1145: Monazite is an ore of
(a) zirconium
(b) thorium
(c) titanium
(d) iron