GasesCharles's Law946Choose the best answerA gas occupies 300 mL at 37°C. It is cooled to −3°C at constant pressure. What is its final volume?A350 mLB270 mLC261 mLD135 mL Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Isomorphism#Solids947Choose the best answerQ.77 The two crystals NaNO₃ & CaCO₃ are both trigonal, they are:AIsomersBPolymorphsCAllotropesDIsomorph Like 0 Discuss 0Share
Basic Concepts of ChemistryElements, Compounds and Mixtures948Choose the best answerIn known elements, the maximum number is of:AMetalsBNon-metalsCMetalloidsDNone of these Like 1 Discuss 0Share
Atomic StructureIsotopes949Choose the best answerWhich element has two major naturally occurring stable isotopes?AAgBOCCDCs Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryOctane Number and Knocking950Choose the best answerWhich fuel is least likely to produce knocking in a petrol engine?ALow-octane petrolBHigh-octane petrolCDieselDKerosene Like 0 Discuss 0Share