846: Consider the following statements :
1. The Richter scale is a logarithmic scale and so an increase of 1 magnitude unit represents a factor of 10 times in amplitude.
2. Each integer reading of the Richter scale has an energy 100 times that of the previous integer reading.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
847: Which of the following have coral reefs?
1. Andaman and Nicobar Islands
2. Gulf of Kachchh
3. Gulf of Mannar
4. Sunderbans
Select the correct answer using the code given below.
(a) 1, 2 and 3 only
(b) 2 and 4 only
(c) 1 and 3 only
(d) 1, 2, 3 and 4
848: The Asia Pacific Economic Cooperation Forum was held in the year 2001 in
(a) Bangkok
(b) Hongkong
(c) Jakarta
(d) Shanghai
849: Match List I with List II and select the correct answer using the codes given below the lists :
List I-------------List II
I. 1556----------(A) Battle of Haldi Ghati
II. 1600---------(B) Nadir Shah's capture of Delhi
III. 1686--------(C) Death of Shivaji
IV. 1739--------(D) Grant of Charter to East India Company
------(E) Accession of Akbar
Codes:
(a) I-C, II-D, III-B, IV-A
(b) I-E, II-D, III-C, IV-B
(c) I-E, II-B, III-A, IV-D
(d) I-A, II-E, III-C, IV-B
850: Which of the following is used in diesel engine?
(1) Cylinder
(2) Spark Plug
(3) Piston
------------------------------
(a) 1, 2 and 3
(b) 1 and 2
(c) 2 and 3
(d) 1 and 3