906: Consider the following statements :
1. Biodiversity hotspots are located only in tropical regions.
2. India has four biodiversity hotspots i.e., Eastern Himalayas, Western Himalayas, Western Ghats and Andaman and Nicobar Islands.
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
907: Lathyrism is caused by excessive consumption of
(a) Kesari dal
(b) Mustard oil
(c) Polished rice
(d) Mushrooms
908: Acid precipitation is now regarded as a serious problem in some European and Asian countries. Its major cause or source is
(a) discharge of acidic effluents onto neutral or slightly alkaline land where the acidic components precipitate
(b) emissions of sulphur oxides and nitrogen oxides from thermal power plants and burning of fossil fuels; these oxides dissolve in atmospheric water vapour and fall back on earth as acid rain
(c) natural carbon dioxide released during respiration of living organisms dissolves in water, forming carbonic acid which is the chief contributor to acidity in rain water
(d) chloro-fluoro-carbons readily react with various chemicals near the earth's surface, producing acidic intermediates which cause acid precipitation
909: Match List I (Cricketer) with List II (country) and select the correct answer using the codes given below the lists:
List I List II
(Cricketer) (Country)
A. Barry Richards 1. England
B. Ted Dexter 2. West Indies
C. Alan Davidson 3. South Africa
D. Charli Griffith 4. New Zealand
5. Australia
Codes:
A B C D
(a) 3 2 5 1
(b) 5 1 4 2
(c) 3 1 5 2
(d) 5 2 4 1
910: Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning?
1. Smelting units
2. Pens and pencils
3. Paints
4. Hair oils and cosmetics
Select the correct answer using the codes given below :
(a) 1, 2 and 3 only
(b) 1 and 3 only
(c) 2 and 4 only
(d) 1, 2, 3 and 4