ICSE ICSE Class 7 - CISCE Question Bank Solutions for Chemistry

Write ‘true’ or ‘false’ for the following statement. 

Iodine acts as an antiseptic in the form of a tincture of iodine. 

A substance which can change its state

The process by which a solid change into a liquid is called

Which of the following is a property of the liquids?

Gases

A metal with melting point less than 50°C is

A metal which is neither ductile nor malleable is

Aluminium is not used to make : 

Give one use for  the following inert gases :

 argon

Give one use for the following inert gase :

helium

Give one use for the following inert gase :

neon

Give one use for the following inert gase :

radon

Give one use for  the following inert gase :

krypton

Give one use for the following inert gase :

xenon

Fill in the blank spaces by choosing the correct words from the given list. 

List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

______ is a liquid metal. 

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

Salt of silver, such as ________ is used for making photographic films.

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

A solution of a metal in mercury is called ________

Statements given below are incorrect. Write the correct statements : 

Bronze is a mixture of 10% copper, 80% zinc and 10% tin.  

Statements given below are incorrect. Write the correct statements : 

Aluminium is best conductor of electricity.   

Statements given below are incorrect. Write the correct statements : 

Zinc is used for making power transmission wires.