1. Which one of the following types of coal contains a higher percentage of carbon than the rest?
(a) Bituminous coal
(b) Lignite
(c) Peat
(d) Anthracite
(d) Anthracite is a dense, shiny coal that has a high carbon content. Very little volatile matter is present in it. It gives a clean flame while burning. Anthracite contains 91% of carbon; is very little volatile and has almost smokeless burning.
2. Which one of the following scholars suggested the earth's origin from gases and dust particles?
(a) James Jeans
(b) H. Alfven
(c) F. Hoyle
(d) O. Schmidt
(d) O. Schmidt in 1943 gave Interstellar Dust
Hypothesis for the origin of the earth and solar system.
3. Match List-I with List-II and select the correct answer using the codes given below the lists :
List-I (Timber) List-II (Country)
A. Cedar 1. Myanmar
B. Douglas Fir 2. Canada
C. Mahogany 3. Mexico
D. Teak 4. Honduras
Codes:
(a) A - 3; B- 2; C- 1; D-4
(b) A - 3; B- 2; C- 4; D-1
(c) A - 2; B- 3; C- 4; D-1
(d) A - 2; B- 3; C- 1; D-4
(c)
• Cedar—Canada
• Douglas Fir—Mexico
• Mahogany—Honduras
• Teak—Myanmar
4. Consider the following statements :
1. Tides are of great help in navigation and fishing.
2. High tide enables big ships to enter or leave the harbour safely
3. Tide prevents siltation in the harbours
4. Kandla and Diamond Harbour are tidal ports
Which of these statements are correct?
(a) 1 and 4
(b) 2, 3 and 4
(c) 1, 2 and 3
(d) 1, 2, 3 and 4
(d) All the given statements are true.
5. Consider the following statements about the 'Roaring Forties':
1. They blow uninterrupted in the northern and Southern Hemispheres
2. They blow with great strength and constancy
3. Their direction is generally from north-west to east in the Southern Hemisphere
4. Overcast skies, rain and raw weather are generally associated with them
Which of these statements are correct?
(a) 1, 2 and 3
(b) 2, 3 and 4
(c) 1, 3 and 4
(d) 1, 2 and 4
(b) The westerlies in the southern hemisphere is called as roaring forties; lies between 40°S to 50°S and is a permanent wind. It is slow over landmass.