Is Matter around us Pure? | Chapter Assessment | English | Grade 9

___is a metal which is liquid at room temperature

• Sodium

• Potassium

• Bromine

• Chlorine

Answer explanation

The only liquid metal at room temperature is mercury

Tags

NGSS.MS-PS1-4

Which of the following is a solid non-metal

• Carbon

• sodium

• Bromine

• Chlorine

Answer explanation

Carbon is a solid non-metal

Which of the following exhibit the property of brittleness-

• metals

• non-metals

• Both 1 and 2

• None

Answer explanation

Non-metals are brittle in nature

Water is a ___________ .

• Compound

• Element

• Metal

• Non-metal

Answer explanation

Water is a compound.

Tags

NGSS.MS-PS1-1

Why is copper used for making wires

• Good conductor

• Ductile

• Shiny

• Both 1 and 2

Answer explanation

Copper is a good conductor of electricity and it is ductile it makes it fit for making electrical wires.