ICSE ICSE Class 7 - CISCE Question Bank Solutions

Write whether the following statement are true or false.

 Solids have the largest inter-molecular space.

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

Calcium carbonate → Calcium oxide + Carbon dioxide.

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

 Carbon + Oxygen → Carbon dioxide.

Write whether the following statement are true or false.

The intermolecular force of attraction is the weakest in gases.

Write whether the following statement are true or false.

Intermolecular force of attraction is greater in gases than in liquids.

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

Calcium oxide + Water → Calcium hydroxide

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

Aluminium + Chlorine → Aluminium chloride.

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

Iron + Sulphur → Iron sulphide.

Write true or false for each statement. Rewrite the false statement correctly.

If the intermolecular space is more than the intermolecular force will be weaker.

The state of matter which has no definite shape or volume is called

There are large intermolecular gaps in

A solid is a state of matter that has

 Rust is a hydrated oxide of iron which is

Balance the following equation :

 Fe + O₂ → Fe₃ O₄

Balance the following equation .

N₂ + O₂ → NO

Balance the following equation :

Pb₃O₄ → PbO + O₂

Balance the following equation. Also name the product formed. 

`"NaNO"_3  → "NaNO"_2  + "O"_2`  Name of product (s)

Balance the following equation Also name the product formed.

`"K" + "CI"_2 → "KCI"`

Balance the following equation. Also name the products formed. 

\[\ce{Ag + S -> Ag2S}\]

Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride    

A gas used to sterilisation of drinking water is ________