Chemistry MCQs

Page No. 109

The most reactive allotropic form of phosphorus is________________?


aWhite


bRedox potential


cBlack


dViolet


View Answer White

Which is carnalite________________?


aKCI


bNaCl


cKCI MgCl2 6H2O


dNa2CO3. 10H2O


View Answer KCI MgCl2 6H2O

Which is the unit of (K) rate constant for zero order reaction ?


as-1


bmol dm-3 s-1


cmol-1 dm3 s-1


dmol-2 dm6 s-1


View Answer mol dm-3 s-1

Which of the following can be used in laptops ?


aSilver oxide battery


bFuel cell


cNickel cadmium cell


dLead accumulator


View Answer Nickel cadmium cell

Which of the following solution has the highest boiling point ?


a5.85% NaCl Solution


b18.0 % glucose solution


c6.0 % urea solution


dAll have same boiling point


View Answer 5.85% NaCl Solution

Solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. Maximum Concentration of Ag+1 ions in the solution is__________________?


a2.0 x 10-10 mol dm-3


b1.414 x 10-5 mol dm-3


c1.0 x 10-10 mol dm-3


d1.0 x 10-5 mol dm-3


View Answer 1.414 x 10-5 mol dm-3

For a given process the heat changes at constant pressure (qp) and at constant volume (qv) are related to each other as___________________?


aqp = qv


bqp < qv


cqp > qv


dqp = qv / 2


View Answer qp > qv

Which specie has unpaired electrons in antibonding molecular orbitals_______________?


aO2+2


bN2-2


cB2


dO2-2


View Answer N2-2

Quantum number values for 3p orbitals are____________________?


an=3 l=2


bn=3 l=0


cn=3 l=1


dn=3 l=3


View Answer n=3 l=1

Only London dispersion forces are present among the_________________?


aMolecules of water in liquid state


bAtoms of helium in gaseous state at high temperature


cMolecules of hydrogen chloride gas


dMolecules of solid iodine



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