English
Maharashtra State BoardSSC (English Medium) 10th Standard

In the chemical equation the _______ are written on the left-hand side. - Science and Technology 1

Advertisements
Advertisements

Question

In the chemical equation the _______ are written on the left-hand side.

Options

  • products

  • reactants

  • element

  • catalyst

MCQ
Fill in the Blanks
Advertisements

Solution

In the chemical equation the reactants are written on the left-hand side.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Chemical reactions and equations - Choose the correct option.

APPEARS IN

SCERT Maharashtra Science and Technology 1 [English] 10 Standard SSC
Chapter 3 Chemical reactions and equations
Choose the correct option. | Q 4

RELATED QUESTIONS

Write the balanced chemical equation for the following reaction.

\[\ce{Aluminium + Copper chloride -> Aluminium chloride + Copper}\]


How will you indicate Exothermic reaction in a chemical equation?


Complete and balance the following equation:

CA (OH)2  +  .............          CaCO3    +   H2O


Balance the given equation:

AI2(SO4)3 +NaOH  AI(OH)3 + Na2SO4 


Balance the gievn equation:

NaOH + H2SO4  Na2SO4 + H2O


Give one example of an exothermic reaction.


Give one example  of an endothermic reaction.


The chemical reaction between quicklime and water is characterised by:
(a) evolution of hydrogen gas
(b) formation of slaked lime precipitate
(c) change in temperature of mixture
(d) change in colour of the product


When the solution of substance X is added to a solution of potassium iodide, then a yellow solid separates out from the solution.
(a) What do you think substance X is likely to be?
(b) Name the substance which the yellow solid consists of.
(c) Which characteristic of chemical reaction is illustrated by this example?
(d) Write a balanced chemical equation for the reaction which takes place. Mention the physical states of all the reactant and products involved in the chemical equation.


Balance the following chemical equation :

FeS + HCl →  FeCl2 + H2S


What information do you get from the equation H2+ Cl2  →  2HCl ?


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

Calcium oxide + Water → Calcium hydroxide


Balance the following equation :

 Fe + O2 → Fe3 O4


Balance the following equation. Also name the products formed. 

`"Mg" + "O"_2  →  "MgO"`


Balance the following equation. Also name the product formed. 

`"KCIO"_3 →  "KCI" +"O"_2`


Balance the following equation. Also name the product formed. 

CO2 + C →  CO


Balance the following equation. Also name the product formed.

PbCO3    →   PbO +CO2


Write down what you understood from the following chemical reaction.

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


Write down what you understood from the following chemical reaction.

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


What is a chemical equation? Why it is necessary to balance it?


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

Magnesium + Sulphuric acid → Magnesium sulphate + Hydrogen


Balance the following equation:

C + H2SO4 → CO2 + H2O + SO2


Balance the following equation:

P + HNO3 → NO2 + H2O + H3PO4


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


Write the balanced chemical equation of the following reaction. sodium hydroxide + sulphuric acid → sodium sulphate + water


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:


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 – copper carbonate.


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.

\[\ce{2H2O ->[electric][current] 2H2 + O2}\]


Name the following:

The gas evolved when a dilute acid is added to chalk [limestone].


Balance the following simple equation:

N2   +   O2  ⇌  NO


Balance the following simple equation:

Fe  +   H2O  ⇌   Fe3O4   +   H2 


Balance the following simple equation:

Al  +   H2SO4  →   Al2(SO4)3   +   H2 


CaCO3 + 2HCl[dil.] → CaCl2 + H2O + CO2 [g]

State the information not conveyed by the above chemical equation. 


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

PbO2 +4HCl → PbCl2 + H2O + Cl2


Writing a chemical reaction in brief by using chemical formulae is called as _______.


Which of the following is the correct observation of the reaction shown in the above set up?


A student took a small amount of copper oxide in a conical flask and added dilute hydrochloric acid to it with constant stirring. He observed a change in colour of the solution. 

  1. Write the name of the compound formed and its colour.
  2. Write a balanced chemical equation for the reaction involved.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×