मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Identify from the Reaction the Reactants that Undergo Oxidation and Reduction. Nio + H2 → Ni + H2o - Science and Technology 1

Advertisements
Advertisements

प्रश्न

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

\[\ce{NiO + H2 -> Ni + H2O}\]

टीपा लिहा

उत्तर

In a reaction, Nickle oxide is changing to nickle. That is, oxygen is being removed from nickle oxide. Removal of oxygen from substance is called reduction, so nickle oxide undergoes reduction.
In a reaction, hydrogen is changing to H2O. That is, oxygen is being added to hydrogen. Addition of oxygen to a substance is called oxidation, so hydrogen undergoes oxidation.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Chemical reactions and equations - Answer the Following

APPEARS IN

बालभारती Science and Technology 1 [English] 10 Standard SSC Maharashtra State Board
पाठ 3 Chemical reactions and equations
Exercise | Q 6. d. | पृष्ठ ४६

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

A shiny brown-coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black-colored compound formed.


What are anti-oxidants? Why are they added to fat and oil containing foods?


Fill in the following blanks with suitable words:

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


When a magnesium ribbon burns in air with a dazzling flame and forms a white ash, is magnesium oxidised or reduced? Why?


Give an example of an oxidation reaction.


Explain reduction in terms of gain or loss of oxygen with one example.


Fill in the blank

In redox reaction oxidation and reduction occur ............................


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

Reduction


In what respect does hydrogen differ from:

alkali metals


Give the general group study of hydrogen with reference to

reducing power 


Compare hydrogen and halogens on the basis of:

reaction with oxygen 


Why this reaction is considered a reversible reaction?


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

Zn + Pb2+→ Pb + Zn 2+


Reacting with water, an active metal produces


A metal oxide that is reduced by hydrogen is


Name:

an oxidizing agent that does not contain oxygen.


State a reason why, when hydrogen is passed over heated copper oxide, the resultant product formed, differs in colour from the original reactant.


State the condition and give balanced equation for the conversion of coke to water gas.


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


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


Explain the term redox reaction with an example involving the reaction of hydrogen sulphide with chlorine.


When the positive charge on an ion increases or the negative charge on them decreases it is called as _______.


Explain the following reaction with their balanced chemical equation.

Hydrogen sulphide reacts with sulphur dioxide.


The process of reduction involves ____________.


Identify the reducing agent in the following reactions

`4"NH"_3 + 5"O"_2 -> 4"NO" + 6"H"_2"O"`


Identify the oxidising agent (oxidant) in the following reactions

`"V"_2"O"_5 + 5"Ca" -> 2"V" + 5"CaO"`


Which among the following are physical or chemical change?

 Evaporation of petrol


Which among the following are physical or chemical change?

Burning of Liquefied Petroleum Gas (LPG)


Which among the following are physical or chemical change?

Sublimation of solid ammonium chloride


Oxidizing agents are otherwise called ______.


The tarnishing of metals is due to the formation of ______.


What are reducing agents? Give examples.


What is rancidity?


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

Ca in CaH2


A reddish brown metal used in electrical wires when powdered and heated strongly turns black. When hydrogen gas is passed over this black substance, it regains its original colour. Based on this information answer the following questions:

  1. Name the metal and the black substance formed.
  2. Write balanced chemical equations for the two reactions involved in the above information

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×