HARD
Earn 100

What are the different physical properties of oxygen?

Important Questions on Element, Compound and Mixture

MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
21% of the air is made up of _____. (oxygen/nitrogen)
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
Most metals are good_____ of electricity. 
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
_____ supports burning.(Chemical element)
MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
Plastic, polyethylene and glass do not _____. (decompose / melt)
MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance

You get up in the morning and go into the bathroom to brush your teeth. Select the correct material used to make objects that you need.

Metal        plastic       porcelain             liquid        wood        fabric

You open the tap made of _____.

EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
_____ is the gas required for combustion.
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance

Fill in the blank with an appropriate word:

The gas that helps in burning is _____ (Oxygen/Carbon dioxide).

MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
The metal surface freshly rubbed with a sand paper has _____.
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
Fill in the blanks with the correct words.
Fertile, Thousands, Roots, Moles, Particles
Air is trapped between the _____ of the soil.
MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
The water gets cool _____ than land. (faster/ slower)
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance

Fill in the blank with a suitable word from the bracket.

Oxygen supports _____(combustion/photosynthesis).

MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
_____ gas present in the air helps in burning.
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
Silver is a _____ conductor of electricity.
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
When you breathe, you take in: _____
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
The substances made up of only one type of atoms are called _____.
MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
Plastic is used to cover electric wires as it is an _____.
MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
The diameter of the molecules of substance is of the order of 10-n . The value of n will be _____.
MEDIUM
Science>Chemistry>Element, Compound and Mixture>Pure Substance
The gas that plants give out while making food is _____.
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
A pure substance which contains two different kinds of atoms is called _____.
EASY
Science>Chemistry>Element, Compound and Mixture>Pure Substance
The gas that is essential for all living beings to live is _____.