Basic Concepts of ChemistryPhysical and Chemical Changes2916Choose the best answerWhich description best fits a reversible physical change?APermanent and reversibleBTemporary and irreversibleCTemporary and reversibleDPermanent and irreversible Like 0 Discuss 0Share
GasesUniversal Gas Constant2917Choose the best answerIn the ideal gas equation, R is called the:ABoltzmann constantBUniversal gas constantCAvogadro constantDPlanck constant Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Atomic Structure#Isotopes2918Choose the best answerAn element has isotopes of 10 u (90%) and 20 u (10%). What is its average atomic mass?A10 uB11 uC15 uD20 u Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Gamma Radiation#Radioactivity2919Choose the best answerQ.111 The option having all the properties of γ-rays:ANeutron highly penetrating, velocity is equal to that of light. Remain undeflected in magnetic fieldBMost penetrating, velocity is equal to that of light, no deflection in magnetic field, short wavelength, shorter than X-raysCLeast penetrating, velocity of light, deflects in magnetic field, helium nucleusDProton least penetrating, deflects like negative particle in magnetic field Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Chemical Equilibrium#Solubility Product2920Choose the best answerA salt AB₂ has solubility 1.0 × 10⁻⁵ mol L⁻¹. What is its Ksp?A4 × 10⁻¹⁰B4 × 10⁻¹⁵C1 × 10⁻¹⁵D1 × 10⁻¹⁰ Like 0 Discuss 0Share