ICSE ICSE Class 6 - CISCE Question Bank Solutions for Chemistry

Define: Formula

Mention three gaseous elements and write their molecular formulae

What is meant by 2H and H₂

What is meant by H₂0 and 3H₂O

State the number of atoms of C₆H₁₂O₆

State the number of atoms of H₂SO₄

State the number of atoms of each element, present in \[\ce{HNO3}\].

Also name the compound.

State the number of atoms of CaCO₃

Name: Three different forms of carbon

Name: A form of carbon used as a gem

Name: Two substances used to make electric wires

Name: Two substances used to make jewellery.

Name A substance used as an insulator.

Give one use of the following substance:
Iron

Give one use of the following substance:
Brass

Give one use of the following substance:
Coal

Give reason: A frying pan is made up of steel but its handle is made up of wood.

Give reason: Graphite is used to make a lead of the pencils.

Give reason: Argon is filled in electric bulbs.

Answer the following question:
Why are copper and aluminium used to make electric wires?