Sindh MDCAT Re-Conduct 2023 Paper 141- What term describes the temperature at which a gas can exist as a liquid at its highest temperature ? A. Critical temperatureB. Condensation temperatureC. Melting temperatureD. Boiling temperature View Answer Answer : A. Critical temperature Description 142- In an elimination reaction where only the substrate is involved in the rate-determining step, what type of elimination reaction is it ? A. UnimolecularB. BimolecularC. TermolecularD. Trimolecular View Answer Answer : A. Unimolecular Description 143- Tollens reagent is prepared by adding drops of NaOH + AgNO3 to a white precipitate of: A. AgClB. Ag2OC. AgOHD. Ag2CO3 View Answer Answer : C. AgOH Description 144- What is produced by the dry distillation of calcium acetate ? A. MethanolB. Calcium oxideC. AcetoneD. Acetic acid View Answer Answer : C. Acetone Description 145- Express the number 75300 in scientific notation: A. 7.5 × 10^4B. 75.30 × 10^4C. 7.53 × 10^3D. 7.53 × 10^-4 View Answer Answer : A. 7.5 × 10^4 Description 146- Who discovered X-rays ? A. Marie CurieB. J. J. ThomsonC. W. RoentgenD. W. Rhenogen View Answer Answer : C. W. Roentgen Description 147- From which source is aluminum extraction commonly achieved through an elimination process ? A. BauxiteB. MagnetiteC. HematiteD. Galena View Answer Answer : A. Bauxite Description 148- How would you describe the purity of copper obtained through the process of electric refining ? A. 50% pureB. 60% pureC. 80% pureD. 100% pure View Answer Answer : D. 100% pure Description 149- Which elements are typically alloyed to produce stainless steel ? A. Fe, Co, MoB. Fe, Ti, MnC. Fe, Cr, NiD. Fe, Al, Cu View Answer Answer : C. Fe, Cr, Ni Description 150- Which principle states that no two electrons in an atom can have the same set of quantum numbers ? A. Pauli’s exclusion principleB. Heisenberg uncertainty principleC. Hund’s ruleD. Aufbau principle View Answer Answer : A. Pauli’s exclusion principle Description 151- Cracking is a process used to increase the quantity of petrol (gasoline) from which source ? A. Crude oilB. CoalC. BiomassD. Natural gas View Answer Answer : A. Crude oil Description 152- What type of reaction involves the combination of two molecules to yield a single molecule ? A. Condensation reactionB. Elimination reactionC. Substitution reactionD. Addition reaction View Answer Answer : D. Addition reaction Description 153- Benzene was first isolated by Faraday in _______. A. 1825B. 1834C. 1845D. 1856 View Answer Answer : B. 1834 Description 154- Fuming sulfuric acid at room temperature reacts with benzene to produce: A. Benzene oxideB. Benzene sulfiteC. Benzene sulfideD. Benzene sulfonic acid View Answer Answer : D. Benzene sulfonic acid Description 155- What is the process called when one or more hydrogen atoms of methane are replaced with halogen ? A. HalogenationB. ReductionC. HydrogenationD. Oxidation View Answer Answer : A. Halogenation Description 156- Which types of elements are predominantly found in the p-block of the periodic table ? A. Metals onlyB. Non-metals onlyC. Both metals and non-metalsD. Metalloids only View Answer Answer : C. Both metals and non-metals Description 157- What property does viscosity measure in liquids ? A. DensityB. VolumeC. Surface tensionD. Resistance in flow View Answer Answer : D. Resistance in flow Description 158- What is the shape of a diamond molecule ? A. TetrahedralB. HexagonalC. CubicD. Octahedral View Answer Answer : Description 1 2 3 4 5 6 7 8
Interesting past pape, I so like it.
Interesting past paper, I so like it.