Atomic StructureElectronic Configuration of d-Block Elements1096Choose the best answerWhich electronic configuration belongs to a Group 12 d-block element?A[Ar]³d¹⁰4s²4p⁶B[Ar]³d¹⁰4s²4p¹C[Ar]³d¹⁰4s²D[Ar]⁴s² Like 0 Discuss 0Share
GasesGas Density1097Choose the best answerUnder which condition is the density of O₂ greatest?A273 K and 1 atmB273 K and 2 atmC546 K and 1 atmD546 K and 2 atm Like 0 Discuss 0Share
Atomic StructureBohr's Atomic Model1098Choose the best answerAccording to Bohr's model, when an electron revolves in a stationary orbit:AIt continuously absorbs energyBIts kinetic energy continuously increasesCIt continuously emits radiationDIts total energy remains constant Like 0 Discuss 0Share
Chemical KineticsStoichiometric Relationship of Reaction Rates1099Choose the best answerFor the reaction 2A + B → A₂B, the rate of disappearance of A is:AHalf the rate of disappearance of BBEqual to the rate of disappearance of BCTwice the rate of disappearance of BDEqual to the rate of formation of A₂B Like 0 Discuss 0Share
LiquidsBoiling Point and External Pressure1100Choose the best answerFor pure water to boil at 110°C, the external pressure must be:ALess than 760 mmHgBGreater than 760 mmHgCExactly 760 mmHgDZero Like 0 Discuss 0Share