ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Complete and balance the following chemical equations:

N₂ + O₂  →

Complete and balance the following chemical equations:

`"H"_2"S"` + `"CI"_2`  `→`  

Complete and balance the following chemical equations

Na + H₂ O →

ANSWER IN DETAIL

How are isobars different from isotopes ?

Complete and balance the following chemical equations

NaCI + `AgNO_3`  `→`

Complete and balance the following chemical equations:

Zn + `"H"_2"SO"_4`  `→`

           (dil)

State what you would observe when the following substance  are heated in a glass test tube:
Red lead

State what you would observe when the following substances are heated in a glass test tube:
Copper (II) carbonate

Complete and balance the following chemical equations:

Fe `"SO"_4`  + NaOH  `→`

   (aq.)          (aq.)

Explain the following reaction with one suitable example .
Combination reactions

Explain the following reaction with one suitable example .
Displacement reaction

Explain the following reaction with one suitable example .
Double decomposition reaction.

Name the type of chemical reaction shown by the following equation:

`CaCO_3 → CaO + CO_2`

Complete and balance the following chemical equation:

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

Complete and balance the following chemical equations:

Ba`"CI"_2`   +  `"H"_2"SO"_4`   `→`

    (aq.)           (aq.)

Fill in the blanK

 A .............is a substance which changes the rate of a chemical reaction without undergoing a chemical change.

 Fill in the blank.
 The formation of gas bubbles in a liquid during a reaction is called ......................

Indicate which of the following statement is true and which is false:

The hydrogen molecule is monovalent.

Write your observations and name the product when

An aqueous solution of barium chloride is added to dilute sulphuric acid.

Hydrogen is combustible as well as a supporter of combustion.