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

Explain the following reaction with their balanced chemical equation. Hydrogen sulphide reacts with sulphur dioxide. - Science and Technology 1

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प्रश्न

Explain the following reaction with their balanced chemical equation.

Hydrogen sulphide reacts with sulphur dioxide.

रासायनिक समीकरणे/रचना
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उत्तर

Hydrogen sulphide and sulphur dioxide react to form sulphur and water. It is a redox reaction.

\[\ce{\underset{\text{Sulphur dioxide}}{SO_{2(g)}} + \underset{\text{Hydrogen sulphide}}{H2S_{(g)}} -> \underset{\text{Sulphur}}{S_{(s)}} + \underset{\text{Water}}{H2O_{(l)}}}\]

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पाठ 3: Chemical reactions and equations - Solve the following Questions

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एससीईआरटी महाराष्ट्र Science and Technology 1 [English] 10 Standard SSC
पाठ 3 Chemical reactions and equations
Solve the following Questions | Q 3.2

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संबंधित प्रश्‍न

The chemical formula for rust is.............. .


What is an oxidising agent?


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


Write the chemical formula of rust.


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


When SO2 gas is passed through saturated solution of H2S, the following reaction occurs:

SO2 + 2H2S → 2H2O + 3S

In this reaction, which substance is oxidised and which one is reduced?


Define oxidation in terms of gain or loss of hydrogen with one example.


When a magnesium ribbon is heated, it burns in air to form magnesium oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.


In the context of redox reactions, the removal of hydrogen from a substance is known as:
(a) oxidation
(b) dehydration
(c) reduction
(d) dehydrogenation


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


MULTIPLE CHOICE QUESTIONS

The process of adding oxygen to a substance is called

  1. oxidation.
  2. reduction.
  3. displacement.
  4. hydrogenation.

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


Compare hydrogen with alkali metals on the basis of:

Oxide formation 


Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain


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

PbO + CO → Pb + CO2


State whether the following conversion is oxidation or reduction:

PbO2 + SO2→ PbSO4 


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

Zn + Pb2+→ Pb + Zn 2+


Write the equation in the ionic form

CuSO4(aq)  + Fe(s)→ FeSO4(aq) + Cu(s)

 

 


Reacting with water, an active metal produces


A metal oxide that is reduced by hydrogen is


Which of the following statements about hydrogen is incorrect?


For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?


Choose terms from the options given in brackets to complete this sentence.

When CuO reacts with hydrogen,………………… is reduced and ……………….is oxidized to ………………….

(CuO, H2, Cu, H2O)

 


Complete and balance the following equation:

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


Distinguish between oxidation and reduction.

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.


Balance the given chemical reaction as per the instructions below.

\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]

Oxidation means losing electrons then what is reduction?


Oxidation is a process which involves ____________.


Identify the reducing agent in the following reactions

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


Identify the reducing agent in the following reactions

`2"H"_2 + "O"_2 -> 2"H"_2"O"`


Identify the oxidising agent (oxidant) in the following reactions

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


Identify the oxidising agent (oxidant) in the following reactions

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


During the reaction of some metals with dilute hydrochloric acid, following observations are made.

Silver metal does not show any change

Explain this observation giving suitable reason.


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  1.  Why do silver articles turn black when kept in the open for a few days? Name the phenomenon involved.
  2. Name the black substance formed and give its chemical formula.

What happens when zinc granules are treated with dilute solution of H2SO4, HCl, HNO3, NaCl and NaOH Also write the chemical equations if reaction oçcurs.


You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute HCl, dilute HNO3, ZnCl2 and water. In which of the above containers, can these solutions be kept?


Write a short note on oxidizing and reducing agents.


What is a redox reaction?


The formation of brown colour on the freshly unit surface of vegetables and fruits is because ______ of organic compounds present in them.


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


The sum of the oxidation number of all atoms in a compound is ______.


What is rancidity?


Identify the type of chemical reaction given below:

\[\ce{2Mg + O2 -> 2MgO}\]


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MnO2 + 4HCl → MnCl2 + 2H2O + Cl2


State whether the given chemical reaction is a redox reaction or not. Justify your answer.

\[\ce{MnO_2 + 4HCl->MnCl_2 +2H_2O + Cl_2}\]


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  1. Name the metal and the black substance formed.
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The metallic oxide which can be reduced by using common reducing agents is ______.


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