CTET Solved Paper - UPTET Feburary 2014 Paper2
- Option : C
- Explanation : The rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen so, it is a redox reaction where iron is the reducing agent and the oxygen is oxidising agent.
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- Option : B
- Explanation : Petroleum is a mixture of hydrocarbon molecules. These hydrocarbon molecules have different boiling points. On this basis they are separated from petroleum for refining it. This process of refining of petroleum is called fractional distillation.
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108. Which one of the following is known as Bayer's Reagent?
- Option : A
- Explanation : Dilute alkaline solution of potassium permanganate is known as Baeyer's is used in organic chemistry as qualitative test for the presence of unsaturation.
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109. "Which two numbers when multiplied give the product 24?"
This question
- Option : D
- Explanation : Is an open-ended question as it has more than one answer.
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- Option : B
- Explanation : Meaning of the term square, rectangle congruent, perimeter etc.
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