4541: In the context of modern scientific research, consider the following statements about 'Ice Cube', a particle detector located at South Pole, which was recently in the news:
1. It is the world's largest neutrino detector, encompassing a cubic kilometre of ice.
2. It is a powerful telescope to search for dark matter.
3. It is buried deep in the ice.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
4542: Match List I (Name of the Lady) with List II (Achievement) and select the correct answer using the codes given below the lists:
List I List II
(Name of the lady) (Achievement)
A. Chinna Pillai 1. Winner of Neerja Bhanot Award
B. Kaveri Thakur Puraskar 2. Recipient of Stree Shakti
C. Mira Nair 3. Became the fastest swimmer in Asia at the age of 16 years
D. Yasoda Ekambaram 4. Recipient of the Golden Lion at Venice Film Festival
Codes:
A B C D
(a) 3 2 1 4
(b) 2 3 4 1
(c) 3 2 4 1
(d) 2 3 1 4
4543: Rivers that pass through Himachal Pradesh are
(a) Beas and Chenab only
(b) Beas and Ravi only
(c) Chenab, Ravi and Satluj only
(d) Beas, Chenab, Ravi, Satluj and Yamuna
4544: Which feature of some, species of blue-green algae helps promote them as bio-fertilizers?
(a) They convert atmospheric methane into ammonia which the crop plants can absorb readily
(b) The induce the crop plants to produce the enzymes which help convert atmospheric nitrogen to nitrates
(c) They have the mechanism to convert atmospheric nitrogen into a form that crop can absorb readily
(d) The induce the roots of the crop plants to absorb the soil nitrates in larger quantities
4545: A passing motorcycle causes distortion or disturbance with reception of signal in radio and T.V. The cause of this is
(a) The intense sound waves effect the small electronic devices of the receptor
(b) The vehicle's metal parts block/distort the radio waves
(c) The spark plug fitted in the engine produces electro-magnetic signals due to sparking
(d) Modern motor-cycles are fitted with electric ignition system which produces radio waves