Radioactivity is a phenomenon of the spontaneous emission of
protons (alpha particles)
electrons (beta particles)
gamma rays (short wave electromagnetic waves)
All of the above
Additional Questions
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Organic Substances which, in very small amounts, control growth and development called |
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Our major foods, fibres, spices, fruits and beverage crops are |
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Outer covering of virus made up of protein is |
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Radish is a |
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Most common disease of poultry in India is |
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Rain water helps to increase the ____ to some extent. |
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Number of chromosomes in Downs syndrome is |
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