If an atom A has a mass number 'x' and atomic number 'y' ( Axy ) and it forms an ion A− by losing an electron. What can we say about the mass number of the ion?

Industrially, hydrogen is prepared by passing ___ over red-hot coke at high temperature.

Categorize the following substances as Metals and Non-metals: Graphite, Zinc, Diamond, Oxygen, Sodium, Aluminium, Silver, Carbon, Mercury, Phosphorous [5 MARKS]

Name a fossil fuel other than coal and petroleum.

The property of virtue of which metals can be drawn into wire is known as:

Write the full form of PVC. Is it thermoplastic or thermosetting plastic ?

Cooked food is an example of ___ change.

The most common fire extinguisher is:

Hydrochloric acid is acidic in aqueous solution because there are more ___ ions than ___ ions.

C60 contains

What is obtained when a metal oxide of the highly reactive metals react with water?

Why does nylon become very popular for making clothes for mankind?

Why do most of elements form ions while entering into chemical reactions?

What is suspension and colloidal solution

What makes litmus paper to change its colour?