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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 Balance the equation with proper coefficient and rewrite the equation.

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प्रश्न

Balance the given chemical reaction as per the instructions below.

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

Balance the equation with proper coefficient and rewrite the equation.

टीपा लिहा
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उत्तर

Coefficient ‘2’ is added to the reactant ‘NaOH’ and the product ‘H2O’ to balance the equation.

The final balanced equation is:

\[\ce{2NaOH + H2SO4 -> Na2SO4 + 2H2O}\]

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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 (D) | पृष्ठ ५०

संबंधित प्रश्‍न

Write the balanced chemical equation for the following reaction.

\[\ce{Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride}\]


Complete and balance the following equation:

\[\ce{Ca(OH)2 + {..........} -> CaCO3 + H2O}\]


Balance the following equation:

\[\ce{Na + O2 -> Na2O}\]


A solution made in water is known as an ______ solution and indicated by the symbol ______.


Explain, with an example, how the physical states of the reactants and products can be shown in a chemical equation.


State one characteristic of the chemical reaction which takes place when dilute sulphuric acid is added to barium chloride solution.


What do you understand by exothermic reactions?


A colourless lead salt, when heated, produces a yellow residue and brown fumes.

  1. Name the lead salt.
  2. Name the brown fumes.
  3. Write a chemical equation of the reaction involved.

Write your observations and name the product when

Iron nails are added to an aqueous solution of copper sulphate.


Write word equation for the following skeletal equation:

\[\ce{Ca + O2 → CaO}\]


Balance the following equation .

N2 + O2 → NO


Balance the following equation. Also name the product formed. 

`"Zn" + "HCI" →  "ZnCI" _2 + "H"_2`


Write your observation and name the product when An aqueous solution of barium chloride is added to dilute sulphuric acid.


Raisins are wiped off gently before final weighing with the help of


Balance the equation stepwise.

 SO2(g) + H2S(aq) → S(s) + H2O(l) 


Write down what you understood from the following chemical reaction.

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


State the information conveyed by the following equation:

Zn(s) + 2HCl(aq) → ZnCl2(aq)  + H2 ↑


Write the chemical equation for the following word equation and balance them.

Carbon   + Oxygen → Carbon dioxide


Write the chemical equation for the following word equation and balance them.

Calcium oxide + Carbon dioxide → Calcium carbonate


Balance the following equation:

Pb3O4 + HCl → PbCl2 + H2O + Cl2


Balance the following equation:

Zn + HNO3 `→` Zn(NO3)2 + H2O + NO2


What is the valency of :

carbon in CH4


Write the balanced chemical equation of the following reaction.

sodium chloride + manganese dioxide + sulphuric acid → sodium hydrogen sulphate  + manganese sulphate + water + chlorine.


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

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the mass of acid required.


How is a flame test performed?


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.


1 g of copper powder was taken in a China dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Give the chemical equations of reactions, the name and the color of the products formed in each case.


Write word equation for the following molecular equation:

AgN03 + HCI → HNO3 + AgCl ↓

Word equation:

State whether AgCl is soluble or insoluble in HN03.


In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.

\[\ce{C +2S -> CS2}\]


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

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

Answer the following:

Write the word equation for the above molecular equation.


Give reason for the following:

Silver salts are kept in dark coloured bottles.


Explain the term ‘chemical equation’.


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

State what is a ‘balanced equation’.


Balance the following simple equation:

Mg   +   N2  →  Mg3N2 


Balance the following simple equation:

Zn  +   HCl  →   ZnCl2   +   H2 


Balance the following simple equation:

H2  +   O2  →   H2O


Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.

Cl2 + 2H2O + SO2 → 4HCl + H2SO4


Balance the given chemical reaction as per the instructions below.

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

Make a list of the elements in the chemical equation.


Write the skeleton equation for the following word equation and then balance them.

  1. Carbon + Oxygen → Carbon dioxide.
  2. Phosphorus + Chlorine → Phosphorus pentachloride.
  3. Sulphur + Oxygen → Sulphur dioxide.
  4. Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.

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