MEDIUM
Earn 100

Divide the students into two groups. Group A divided the mixture of iron filings and sulphur two parts. Group B divided the compound iron sulphide into two parts. Both the group added carbon disulphide in one part and dilute hydrochloric acid or sulphuric acid to the another part. On adding dilute sulphuric acid or dilute hydrochloric acid did both the groups obtain a gas? Did the gas in both the cases smell the same or different?

Important Questions on Is Matter around Us Pure?

MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
Which one of the following alloy does not contain copper?
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
If 110 g of salt is present 550 g of the solution then the concentration of the solution will be:
EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture
The alloy nichrome contains
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
A solution is prepared by dissolving 60 g of sugar in 480 g of water. Concentration in terms of mass by a mass percentage of the solution is:
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
Take 30g of common salt and dissolve it 70g of water, Find the concentration of the solution in terms of weight percent.
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
Which of the following statement is true about the solubility of a substance?
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
What is the mass of oxygen required to react completely with 15 g of H2 gas to form water:
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
Gas used for precipitation of pure common salt (NaCl) from saturated solution of common salt is 
EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture

Name an alloy of lead and tin.

EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture
What are alloy steels?
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
What is heat treatment of steel? Explain.
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
What are alloys? Give two examples. 
EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture

Give one word for the following statement:

  • The substance prepared by adding other metals to a base metal in appropriate proportions to obtain certain desirable properties.
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
Which one of the following is not a homogeneous mixture?
HARD
Science>Chemistry>Is Matter around Us Pure?>Mixture
Why is kerosene considered a mixture? 
EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture
In a mixture containing sugar and sand, the constituent(s) is/are _____.
   
HARD
Science>Chemistry>Is Matter around Us Pure?>Mixture
List the points of differences between homogeneous and heterogeneous mixtures.
MEDIUM
Science>Chemistry>Is Matter around Us Pure?>Mixture
Explain why coal is regarded as a mixture and not a pure substance.
EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture
Brass is a mixture of two elements copper and tin.
EASY
Science>Chemistry>Is Matter around Us Pure?>Mixture
All mixtures are homogeneous in nature.