Practise UHS Punjab MDCAT Chemistry practice MCQs in sets of about 20 questions with instant answers and explanations. This page focuses on mixed practice se…
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Q1. In a chemical plant producing methanol from water gas, the reaction is carried out at 450C and 200 atm. Which catalyst is utilized?
Answer: ZnO and Cr2O3
Q2. A brewery uses molasses as a raw material for ethanol production. Which enzyme specifically converts sucrose into glucose and fructose during fermentation?
Answer: Invertase
Q3. During the industrial synthesis of phenol via the Dow's process, chlorobenzene is reacted with 10% NaOH. What are the required temperature and pressure?
Answer: 360C and 150 atm
Q4. To prevent the illegal consumption of industrial-grade ethanol, 10% methanol is added to it. What is the common name for this specific mixture?
Answer: Methylated spirit
Q5. A laboratory requires 100% pure ethanol for a sensitive reaction. Which substance is used to remove the last traces of water from rectified spirit?
Answer: CaO
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