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Q. Of the following, the content of carbon is minimum in
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Q. In natural gas, the compound present in major amounts is made up of hydrogen and
Q. The substance that contains the maximum amount of nitrogen is
Q. The two metal ions that cause hardness to water are:
Q. Diamond is harder than graphite because of :
Q. Which one of the following substances does not have a melting point
Q. The octane number of zero is assigned to
Q. Which of the following type of coal has the lowest proportion of volatile matter ?
Q. Man dies in the atmosphere of CO, because it
Q. The coating of a thin layer of zinc on steel or iron objects is known as
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