मराठी

Complete and balance the following chemical equation: Pb⁡(NO⁢3)⁢2 ->[Heat]

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प्रश्न

Complete and balance the following chemical equation:

\[\ce{Pb(NO3)2 ->[Heat]}\]

रासायनिक समीकरणे/रचना
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उत्तर

\[\ce{Pb(NO3)2 ->[heat] 2PbO + 4NO2 + O2\uparrow}\] 

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पाठ 6: Chemical Reactions - Exercise 1 [पृष्ठ ७३]

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सेलिना Concise Chemistry [English] Class 8 ICSE
पाठ 6 Chemical Reactions
Exercise 1 | Q 6.7 | पृष्ठ ७३

संबंधित प्रश्‍न

State whether the following statement is true or false. In case a statement is false, write the corrected statement.

Condensation of steam is not a chemical change.


FILL IN THE BLANK

In a double decomposition precipitation reaction both the reactants must be ............ soluble.


FILL IN THE BLANK

Positively charged ions are called ........


How is precipitate formation in a chemical reaction indicated?


How is a strong electrolyte different from a weak electrolyte?


Write true or false  :
No new substance is formed during a chemical reaction.


Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
To prevent rusting, a layer of ______ metal is applied on iron sheets.


Complete the statement by filling the gap using an  appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

An ______ is drawn in between the reactants and products while writing the equation for a chemical reaction.


Give reason for the following:

Molybdenum is used in the manufacture of ammonia.


Give a chemical test to distinguish between the following gases. 

HCl and Cl2


Distinguish by heating the following in dry test tubs.

Zinc nitrate and copper nitrate.


Distinguish by heating the following in dry test tubs.

Copper Sulphate and copper carbonate


Select the correct answer for the following options:

The gas obtained when potassium chlorate is heated in the presence of a catalyst.


Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.


Give a suitable example with an equation to show the representation of a chemical reaction.


______ gas causes tears in our eyes while cutting onions.


A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?


Galvanization is a process in which ______ is coated as a layer of iron.


______ is a chemical substance is used in whitewashing.


What is the difference between reactants and products?


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