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The number of waves in n x 10th Bohrs orbit are

n2
n
n-2
n3
Additional Questions

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The items amenable to detection by soft x-rays are

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The material which can be deformed permanently by heat and pressure is called a

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The mass number of a nucleus is

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The inexpensive and commonly used variety of glass is called soda glass. It is called so because

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The gas used in the manufacture of vanaspati from vegetable oil is

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The first metal used by man was

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The hydronium ion is

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