Q. The commercially useful property of both ethylene and styrene is their ability
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Q. The metal used to galvanise iron to protect it from rusting is
Q. Who developed the model of atomic structure ?
Q. A substance mixed with metals to promote fusion (melting) is called
Q. Which of the following is used to make light weight, but strong plastic ?
Q. Which of the following is the purest form of Carbon ?
Q. Which of the following type of coal has the lowest proportion of volatile matter ?
Q. What does one mole of H2O correspond to
Q. Permanent - hardness of water may be removed by addition of
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