Q161
Open questionPetroleum is a mixture of
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Q162
Open questionWhich of the following contains high content of lead?
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Q163
Open questionPiped Natural Gas (PNG) is used for
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Q164
Open questionPetroleum consists of a mixture of
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Q165
Open questionWhite coal is
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Q166
Open questionWhich of the following is the petroleum wax ?
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Q167
Open questionThe hottest part of the gas flame is known as
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Q168
Open questionWater is not effective in extinguishing a fire caused by petrol because
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Q169
Open questionThe temperature of oxy-acetylene flame is around
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Q170
Open questionHelium gas is used in gas balloons instead of hydrogen gas because it is
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Q171
Open questionSea water can be purified by the process of
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Q172
Open questionA mixture of water and alcohol can be separated by
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Q173
Open questionWhich one is a naturally occuring noble gas?
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Q174
Open questionTotal number of naturally occurring elements
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Q175
Open questionThe coloured discharge tubes for advertisement mainly contain
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Q176
Open questionElement 106 was discovered by
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Q177
Open questionThe gas used for filling weather balloons is
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Q178
Open questionThe most abundant element is
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Q179
Open questionA balloon filled with helium rises in air because
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Q180
Open questionWhich one of the following is also known as solution ?
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