1416: Decomposition of organic matter is due to:
(a) Virus
(b) Fungi
(c) Bacteria
(d) None of these
1417: 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
1418: To a person on the moon, the sky appears:
(a) White
(b) Black
(c) Blue
(d) Orange
1419: Each of the persons A, B, C, D and E possesses Unequal number (<10) of similar items. A, B and C possess 21 items in all, while C, D and E possess 7 items in all. How many items do A and B possess in all?
(A) 17
(B) 15
(C) 18
(D) Data is insufficient
1420: Who inscribed the name of Khalifa of Baghdad on his coins?
(a) Alauddin Khilji
(b) Iltutmish
(c) Qutub-ud-din
(d) Balban