heart pacemakers is
1). Uranium
2). Deuterium
3). Plutonium
4). Radium
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3. Photo chemical smog is a resultant of the reaction among
4. Question 7.2:Why is BiH3 the strongest reducing agent amongst all the hydrides ofGroup 15 elements?
5. Green house effect is accelerated by
6. Biofertilizers convert nitrogen to ________ .
7. The least preferred technique in the disposal of Municipal Solid Waste is :
8. Question 16.15:What are food preservatives?
9. The particle required to continue the chain process of Uranium fission is :