Q901
Open questionCement is usually a mixture of :
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Q902
Open questionSodium bicarbonate is commercially known as
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Q903
Open questionWhich of the following is the main nitrogenous waste in humans ?
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Q904
Open questionQuartz is a crystalline form of
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Q905
Open questionUrea is a
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Q906
Open questionOxygen has (+) oxidation number only in
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Q907
Open questionThe oxidation number of nickel in K4[Ni(CN)4] is
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Q908
Open questionHow many neutrons are there in 92U238 atom ?
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Q909
Open questionThe number of neutrons present in an element having mass number 226 and atomic number 88 is :
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Q910
Open questionWho modified Bohr's theory by introducing elliptical orbits for electron path?
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Q911
Open questionA subshell with l = 2 can take up
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Q912
Open questionTwo electrons in an orbital are differentiated by which of the following ?
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Q913
Open questionWhen cathode rays strike a target of high atomic weight, they give rise to
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Q914
Open questionHow many electrons can be accommodated in d-orbital?
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Q915
Open questionThe scientist who experimentally proved the existence of positron is
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Q916
Open questionWhen there are two electrons in the same orbital, they have:
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Q917
Open questionThe antiparticle of an electron is
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Q918
Open questionNucleons are regarded as composites sub-particles known as
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Q919
Open questionConduction band electrons have more mobility than holes because they
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Q920
Open questionWhich one of the following has greatest mass ?
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