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

Balance the given chemical reaction as per the instructions below. NaOH+HX2SOX4⟶NaX2SOX4+HX2O Write names of reactants and products of chemical reaction.

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प्रश्न

Balance the given chemical reaction as per the instructions below.

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

Write names of reactants and products of chemical reaction.

एका वाक्यात उत्तर
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उत्तर

Names of reactants: Sodium hydroxide and Sulphuric acid
Names of products: Sodium sulphate and water

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Chemical reactions and equations - Answer the following questions [पृष्ठ ५०]

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एससीईआरटी महाराष्ट्र Science and Technology Part 1 [English] Standard 10 Maharashtra State Board
पाठ 3 Chemical reactions and equations
Answer the following questions | Q 1 (A) | पृष्ठ ५०

संबंधित प्रश्‍न

Write the balanced chemical equation for the following reaction.

\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]


2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.


Balance the following equation:

\[\ce{Al2(SO4)3 + NaOH -> Al(OH)3 + Na2SO4}\]


Write any two observations in an activity which may suggest that a chemical reaction has taken place. Give an example in support of your answer.


Write the balanced equation for the following reaction, and add the state symbol:

Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.


Ammonia reacts with oxygen to form nitrogen and water. Write a balanced chemical equation for this reaction. Add the state symbols for all the reactants and products.


State the various characteristics of chemical reactions.


One of the following does not happen during a chemical reaction. This is:


Which of the following does not involve a chemical reaction?


The chemical reaction between two substances is characterised by a change in colour from orange to green. These two substances are most likely to be ______.


Write word equation for the following skeletal equation:

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


Write your observation for the following chemical reaction and name the product formed :
When ammonium chloride is heated with sodium hydroxide.


Write symbolic representation for the following word equation and balance them :

Calcium carbonate → Calcium oxide + Carbon dioxide.


Balance the following equation :

 Fe + O2 → Fe3 O4


Balance the following equation. Also name the product formed. 

`"CO" + "O"_2  → " CO"_2`


Balance the following equation. Also name the product formed. 

CO2 + C →  CO


While performing the experiment with raisins to determine the percentage of water absorbed by them, a student made following measurements:

Mass of water in the beaker = 40 g

Mass of raisins before soaking = 5 g

Mass of raisins after soaking for 2 hours = 8 g

Mass of water left in the beaker after the experiment = 35 g

The percentage of water absorbed by raisins is:


Complete the following equation:
CH4 + O2 —>


Write down what you understood from the following chemical reaction.

AgNO3(aq) + NaCI(aq) → AgCI ↓ + NaNO3(aq)


What is the limitation of the reaction given in question 2?


Balance the following equation:

KOH + Cl2 → KCl + KClO + H2O


Balance the following equation:

 HNO3 + H2S → NO2 + H2O + S


Name the fundamental law that is involved in every equation.


Write the balanced chemical equation of the following reaction.
potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water


\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of salt formed.


Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Zinc reacts with silver nitrate to produce zinc nitrate and silver.


Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.


Write word equation for the following molecular equation:

\[\ce{CaCO3 + 2HCl ->[\triangle] CaCl2 + H2O + CO2 [g]}\]

Word equation:

State which characteristic does [g] in the above reaction indicate. The word equation of:


Write word equation for the following molecular equation:

FeSO4 + 2NaOH →Na2SO4 + Fe(OH)2 ↓

Word equation:

State why [↓] indication is seen after Fe(OH)2 and not after Na2SO4


A chemical reaction is generally accompanied by certain external indications or characteristics. These include – change of – (a) colour (b) state (c) smell (d) evolution of gas (e) formation of precipitate (f) evolution or absorption of heat. With reference to change of colour – state the change in colour seen when the following are heated –  lead [IV] oxide.


In certain reaction an insoluble solid called precipitate is formed. State the colour and name of the precipitate formed in the following reaction involving addition of:

Copper [II] sulphate to sodium hydroxide.


Representation of the results of a chemical change – is a chemical equation.

For the equation: FeCl3 + 3NH4OH 3NH4Cl + Fe(OH)3 ↓

Answer the following:

Name the reactants and the products in the above equation.


Give an example of a chemical equation in which two reactants form:

three product


\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]

State why the compound MnO2 is written above the arrow.


Balance the following simple equation:

ZnS   +   O2  →  ZnO + SO2 


Balance the following simple equation:

FeCl2   +   Cl2  →  FeCl3 


Balance the following simple equation:

KHCO3 →  K2CO3   +    H2O   +   CO2


Balance the following simple equation:

H2  +   O2  →   H2O


Write a balanced equation for the following word equation:

Iron + Hydrochloric acid → Iron [II] chloride + Hydrogen


What is a chemical equation?


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