1. What is the name given to an almost circular coral reef inside which there is a lagoon? 2. Chocolates can be bad for health because of a high content of which element? 3. In ... state receives rainfall from north-east monsoons? 20. Where are the traces of Portuguese culture found in India? Answer : Answer : 1. Atoll 2. Nickel 3. Chloroplast 4. Pine, cedar, fir 5. Mathura 6. President 7. J. J. Thomson 8. 1982 9. Temperate forest 10. Ardhamagadhi 11. Donkey 12. Dendrochronology 13. President ... 15. Jaina 16. Zinc 17. Rana Kumbha 18. Industrial Development Bank of India 19. Tamil Nadu 20. Goa...
The metal ion present in vitamin B12 is : (1) cobalt (2) zinc (3) nickel (4) iron Answer : cobalt...
Which of the toxic heavy metals is found in modern tannery industries ? (1) Nickel (2) Zinc (3) Chromium(4) Lead Answer : Chromium...
Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? (1) Iron and cadmium (2) Nickel and cadmium (3) Lead peroxide and lead (4) Zinc and carbon Answer : Nickel and cadmium...
Chlorophyll contains (1) Iron (2) Magnesium (3) Cobalt (4) Zinc Answer : Magnesium...
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