Q421
Open questionMain constituents of portland cement are calcium aluminate and
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Q422
Open questionA mineral is termed as 'ore', if
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Q423
Open questionPick out the wrong statement.
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Q424
Open questionWhich of the following is not produced on commercial scale from sea water?
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Q425
Open questionReverse osmosis is normally used for the
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Q426
Open questionThe only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
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Q427
Open questionIn an integrated steel plant, NH3 present in coke oven gas is normally recovered as
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Q428
Open questionPick out the wrong statement.
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Q429
Open questionFermentation is adversely affected by the
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Q430
Open questionNitrogen is an essential component of
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Q431
Open questionStarting material for the commercial production of ethyl alcohol in India is
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Q432
Open questionOxidation of SO2 to SO3 is favoured by
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Q433
Open questionMain use of liquid nitrogen is in
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Q434
Open questionPick out the wrong statement.
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Q435
Open questionNa2CO3 is called
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Q436
Open questionNa2CO3.10H2O is called
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Q437
Open questionNaphthols are derivates of
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Q438
Open questionWhich of the following has sodium bicarbonate as its main constituent ?
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Q439
Open questionDehydrogenation of isopropanol produces
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Q440
Open questionWhich of the following is the second major component of cement?
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