Advertisements
Advertisements
Question
Name the process by which the various gases of the air are separated.
Advertisements
Solution
Various gases of air are separated by fractional distillation.
APPEARS IN
RELATED QUESTIONS
Define the term matter. What is it composed of?
Name the terms for the change of vapour into a liquid.
A kind of matter which can sublime is
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
Name a non-metal which is a good conductor of electricity.
Name a metal which has a low melting point.
Which of the following is not an element ?
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
Name the process which can be used to recover salt from an aqueous salt solution.
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
How will you separate camphor, common salt and iron nails from their mixture ?
The material which is added to water during purification process at the water works so as to disinfect it is :
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Select the correct answer from A, B, C, D & E for the statement given below:
An atom or group of atoms _________ having a resultant charge.
All the matter made of ______.
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
Compressibility of solids: ______.
Give an example of a molecule.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
