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Extraction of Metals:PYQ 2023 Extraction of Metals: Practice Questions Q1. Among the following compounds, the number of those present in copper matte is _______. A. CuCO3 B. Cu2S C. Cu2O D. FeO Show Answer Answer: B. Cu2S Q2. The metal which is extracted by oxidation and subsequent reduction from its ore is A. Ag B. Fe C. Cu D. Al Show Answer Answer: B. Fe Q3. Given below are two statements: Statement I: During Electrolytic refining, the pure metal is made to act as anode and its impure metallic form is used as cathode. Statement II: During the Hall-Heroult electrolysis process, purified Al2O3 is mixed with Na3AlF6 to lower the melting point of the mixture. In the light of the above statements, choose the most appropriate answer from the options given below: A. Both statements are correct B. Statement I i...

Mock Quiz: StudyBeacon Mock Quiz: StudyBeacon Test your skills with these carefully curated questions. Select an option to reveal the correct answer and solution. Q1. If n is the number of ways five different employees can sit into four indistinguishable offices where any office may have any number of persons including zero, then n is equal to: 15 20 10 25 Q2. In an examination of Mathematics paper, there are 20 questions of equal marks and the question paper is divided into three sections: A, B, and C. A student is required to attempt a total of 15 questions taking at least 4 questions from each section. If section A has 8 questions, section B has 6 questions, and section C has 6 questions, then the total number of ways a student can select 15 questions is: 5880 7200 4320 5040 Q3. There...

Practice Tests Which of the following is a derived unit? (1) Unit of mass (2) Unit of area (3) Unit of time (4) Unit of current Show Answer (2) unit of Area Q2. E, m, L, G denote energy, mass, angular momentum and gravitation constant respectively. The dimensions of EL²/m²G² will be that of (1) Unit of mass (2) Unit of area (3) Unit of time (4) Unit of current Show Answer  Relevant Posts: