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NEET Exam  >  NEET Tests  >  Daily Test for NEET Preparation  >  Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - NEET MCQ

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - NEET MCQ


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10 Questions MCQ Test Daily Test for NEET Preparation - Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28)

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) for NEET 2024 is part of Daily Test for NEET Preparation preparation. The Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) questions and answers have been prepared according to the NEET exam syllabus.The Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) below.
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Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 1
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What is the oxidation half reaction of Cu+2 + Zn → Cu + Zn+2?

Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 1

Oxidation is the loss of electrons by an atom, ion, or molecule. It is also known as de-electronation. Here in the above-given chemical reaction Cu+2 + Zn → Cu + Zn+2, the oxidation half-reaction is Zn → Zn+2.

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 2
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When a zinc rod is kept in a copper nitrate solution what happens?

Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 2
When zinc is placed in a copper nitrate solution, the intensity of the blue color is produced, and copper iron is deposited on zinc. This is a Redox reaction between zinc and an aqueous solution of copper nitrate occurring in a beaker.
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Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 3
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In this reaction Cu+2 + Zn → Cu + Zn+2, what is an oxidising agent?

Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 3

Oxidant or oxidizing agent is a chemical substance that can accept one or more electrons and causes oxidation of some other species. Here, to accept electrons from zinc, so copper is an oxidizing agent.

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 4
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Loss of electrons is _________________
Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 4
Loss of electrons is referred to as oxidation. Oxidizing agent is the acceptor of electrons, and the reducing agent is a donor of electrons, where oxidation is characterized by the loss of electrons by any species, and reduction is the gain of electrons by any species.
Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 5
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Which of the following is true as per the metal activity series?
Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 5

Metal activity series or electrochemical series is a series in the decreasing order of metals which are active during a chemical reaction comparatively with each other. Here, Zinc’s activity is greater than Copper’s activity, and Copper’s activity is greater than that of silver.

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 6
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Intensity of blue color increases gradually when _________________
Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 6
When a copper rod is dipped in silver nitrate solution, a redox reaction occurs between Copper and an aqueous solution of silver nitrate. So the intensity of the blue color increases gradually as silver deposits on the rod.
Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 7
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What is a reducing agent of the reaction Cu+2 + Zn → Cu + Zn+2?
Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 7

Reductant or reducing agent is a chemical substance which can give one or more electrons and causes reduction of some other species in a chemical reaction. Therefore, zinc is a reducing agent in this reaction.

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 8
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Which of the following is not an oxidising agent?
Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 8
Molecules of the most electronegative elements, compounds having an element in the highest oxidation state, and oxides of metals and nonmetals are examples of oxidizing agents. But sodium hydride is a metallic hydride, so it is not an oxidizing agent.
Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 9
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Hydrogen peroxide is a ______________
Detailed Solution for Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 9

Hydrogen peroxide, which is chemically written as H2O2, is a strong oxidizer as well as a reducer. As it contains two hydrogens and two oxygens, it can easily lose hydrogen or oxygen, i.e., oxidizes and reduces respectively.

Test: Redox Reactions in Terms of Electron Transfer Reactions (August 28) - Question 10
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In the reaction between potassium permanganate (KMnO4) and hydrogen peroxide (H2O2) in an acidic medium, which element undergoes oxidation?
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