421: The gas used for artificial ripening of green fruits is
(a) Carbon dioxide
(b) Ethane
(c) Hydrogen
(d) acetylene (ethyne)
422: Match List I with List II and select the correct answer using the codes given below the lists :
List I-------List II
I. Ringgit (A) Indonesia
II. Baht (B) South Korea
III. Rupiah (C) Thailand
IV. Won (D) Malayasia
Codes:
(a) I-A, II-C, III-D, IV-B
(b) I-D, II-C, III-A, IV-B
(c) I-A, II-B, III-D, IV-C
(d) I-D, II-B, III-A, IV-C
423: Willy willy is
(a) a type of tree grown in temperate regions
(b) a wind that blows in a desert
(c) a tropical cyclone of the north-west Australia
(d) a kind of common fish found near Lakshadweep island
424: Consider the following events:
1. The first democratically elected communist party government formed in a State in India.
2. India's then largest bank, 'Imperial Bank of India', was renamed 'State Bank of India'.
3. Air India was nationalised and became the national carrier.
4. Goa became a part of independent India.
Which of the following is the correct chronological sequence of the above events?
(a) 4 - 1 - 2 - 3
(b) 3 - 2 - 1 - 4
(c) 4 - 2 - 1 - 3
(d) 3 - 1 -2 -4
425: The working of the quartz crystal In the watch is based on the
(a) Photoelectric Effect
(b) Johnson Effect
(c) Piezo-electric Effect
(d) Edison Effect