1816: There are 50 students admitted to a nursery class. Some students can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many students can speak Hindi, how many can speak only Hindi and how many can speak only English ?
(a) 21, 11 and 29 respectively
(b) 28, 18 and 22 respectively
(c) 37, 27 and 13 respectively
(d) 39, 29 and 11 respectively
1817: The graph given below shows the mean average monthly temperatures (in Degree C) and mean monthly rainful (in cms) of a place :
The graph is indicative of which one of the climatic zones of the world ?
(a) Wet & dry tropical
(b) Rainy tropical
(c) Semi-arid tropical
(d) Temperate marine
1818: Between India and East Asia, the navigation time and distance can be greatly reduced by which of the following?
1. Deepening the Malacca straits between Malaysia and Indonesia.
2. Opening a new canal across the Kraisthmus between the Gulf of Siam and Andaman Sea.
Which of the statements given above is are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither I nor 2
1819: 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
1820: As per the Human Development Index given by UNDP, which one of the following sequences of South Asian countries is correct, in the order of higher to lower development?
(a) India--Sri Lanka--Pakistan--Maldives
(b) Maldives--Sri Lanka--India--Pakistan
(c) Sri Lanka--Maldives--India--Pakistan
(d) Maldives--India--Pakistan--Sri Lanka