मराठी

You Are Given the Following Chemical Equation: Mg (S) + Cuo (S) → Mgo (S) + Cu (S) this Equation Represents: (A) Decomposition Reaction as Well as Displacement Reaction (B) Combination Reaction as Well as Double Displacement Reaction (C) Redox Reaction as Well as Displacement Reaction (D) Double Displacement Reaction as Well as Redox Reaction - Science

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प्रश्न

You are given the following chemical equation:

Mg (s) + CuO (s) → MgO (s) + Cu (s)

This equation represents:
(a) decomposition reaction as well as displacement reaction
(b) combination reaction as well as double displacement reaction
(c) redox reaction as well as displacement reaction
(d) double displacement reaction as well as redox reaction

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उत्तर

(c) redox reaction as well as displacement reaction

In the given reaction, magnesium takes oxygen and gets oxidised, whereas copper loses oxygen and gets reduced, so it is a redox reaction. Also magnesium, being more reactive metal, displaces copper from the copper solution and hence it is a displacement reaction.

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पाठ 1: Chemical Reactions and Equations - Exercise 2 [पृष्ठ ४९]

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लखमीर सिंह Chemistry (Science) [English] Class 10
पाठ 1 Chemical Reactions and Equations
Exercise 2 | Q 57 | पृष्ठ ४९

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

Fill in the following blanks with suitable words:

The addition of hydrogen to a substance is called ........ whereas removal of hydrogen is called .......


The colours of aqueous solutions of CuSO4 and FeSO4 as observed in the laboratory are:

(A) pale green and light blue respectively

(B) light blue and dark green respectively

(C) dark blue and dark green respectively

(D) dark blue and pale green respectively


Identify from the reaction the reactants that undergo oxidation and reduction.

2Mg + O2 → 2MgO


Explain the following in term of gain or loss of oxygen with two examples.

Oxidation


In what respect does hydrogen differ from:

alkali metals


Give the general group study of hydrogen with reference to

reducing power 


State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.

PbO + CO → Pb + CO2


Divide the following reactions into oxidation and reduction half-reaction:

Zn + Cu2+ → Cu + Zn 2+


Divide the above equation into oxidation and reduction half-reactions.


Reacting with water, an active metal produces


Name:

an oxidizing agent that does not contain oxygen.


Complete and balance the following equation:

\[\ce{K + H2O -> }\]________+ ________


Explain the term oxidation in term of addition and removal of oxygen/hydrogen with a suitable example. 


State what is reducing agent. Give an example of oxidising agent in the gaseous, liquid, and solid form.


Identify the oxidising agent (oxidant) in the following reactions

`3"Fe" + 4"H"_2"O" -> "Fe"_3"O"_4 + 4"H"_2`


Which among the following are physical or chemical change?

Burning of Liquefied Petroleum Gas (LPG)


Write a short note on oxidizing and reducing agents.


What is a redox reaction?


The tarnishing of metals is an example of ______ reaction.


Find the oxidation number of the element in the following compound.

Mg in MgO


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