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The monomer of polythene is

vinyl chloride
ethylene
ethyl alcohol
None of the above
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The most malleable metal is

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

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The mass of one Avogadro number of helium atom is

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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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