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

Write Down What You Understood from the Following Chemical Reaction. - Science and Technology 1

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प्रश्न

Write down what you understood from the following chemical reaction.

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

थोडक्यात उत्तर
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उत्तर

i. AgNO3 and NaCl are reactants and AgCl and NaNO3 are products.
ii. Reactants and the product NaNO3 are in aqueous form.
iii. Product AgCl is formed in the form of precipitate.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
2018-2019 (March) Balbharati Model Question Paper Set 1

संबंधित प्रश्‍न

Balance the following equation:

Na + O2  Na2O


When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are metals.


Balance the following chemical equation:

MnO2  +  HCI  →  MnCI2  +  CI2  +  H2O

 


 Rewrite the following information in the form of a balanced chemical equation:
Magnesium burns in carbon dioxide to form magnesium oxide and carbon.


With the help of an appropriate example, justify that some of the chemical reactions are determined by Change in temperature.

Give chemical equation for the reaction involved in the above case.


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:
(a) potassium dichromate solution and sulphur dioxide
(b) potassium permanganate solution and sulphur dioxide
(c) potassium permanganate solution  and lemon juice
(d) potassium dichromate solution and carbon dioxide.


A white precipitate can be obtained by adding dilute sulphuric acid to:
(a) CuSO4 solution
(b) Nacl solution
(c) BaCl2 solution
(d) Na2SO4 solution


A colourless lead salt, when heated, produces a yellow residue and brown fumes.
(a) Name the lead salt.
(b) Name the brown fumes.
(c) Write a chemical equation of the reaction involved.


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

Calcium oxide + Water → Calcium hydroxide


Balance the following equation. Also name the product formed.

PbCO3    →   PbO +CO2


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 —>


Explain the terms with examples.

Balanced equation


Balance the equation stepwise.
H2S2O7(l) + H2O(l) → H2SO4(l)


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

Calcium + Nitrogen → Calcium nitride


Balance the following equation:

 Fe + H2O → Fe3O4 + H2

 


Balance the following equation:

NO2 +H2O → HNO2 + HNO3


What information do the following chemical equations convey? Mg + 2HCl → MgCl2+ H2


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

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of chlorine gas formed.


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

0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate the volume of chlorine gas formed at S.T.P.


Answer the following question:
How do acids and bases react with each other? What is the name of the process? What product is obtained from these reactions?


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.


Answer the following question.
What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write a chemical equation for the reaction involved.


Write word equation for the following molecular equation:

\[\ce{NH3 [g] + HCl [g] ⇌ NH4Cl [s]}\]

Word equation:
State which characteristic is observed in the above reaction.

Give an-example of a similar above characteristic, seen between two other gaseous reactants.


Write word equation for the following molecular equation:

\[\ce{H2 [g] + Cl2 [g] ->[sunlight] 2HCl}\]

Word equation:

State which form of energy is utilised in the above chemical reaction.


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.

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


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.

2H2 + O2 → 2H2O


Give word equation for the following chemical reaction and give the names of the product formed.

\[\ce{CuO + H2SO4 -> CuSO4 + H2O}\]


Balance the following simple equation:

Al   +   O2  →  Al2O3 


Balance the following simple equation:

Al  +   H2SO4  →   Al2(SO4)3   +   H2 


Balance the following simple equation:

CaO  +  HCl  →  CaCl2  +  H2


Give a balanced equation by partial equation method, [steps are given below].

The reaction of excess ammonia with chlorine – Ammonia as a reducing agent

  1. Ammonia first reacts with chlorine to give hydrogen chloride and nitrogen.
  2. Hydrogen chloride then further reacts with excess ammonia to give ammonium chloride.

What is a chemical equation?


Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of Potassium Iodide solution to it. What would she observe?


Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSOand NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?

  1.  In beakers A and B, exothermic process has occurred.
  2. In beakers A and B, endothermic process has occurred.
  3. In beaker C exothermic process has occurred.
  4.  In beaker C endothermic process has occurred.

When aqueous solutions of potassium iodide and lead nitrate are mixed an insoluble substance separates out. The chemical equation for the reaction involved is: 


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