Q. 303.9( 8 Votes )
There is a large group of materials P which can be divided into three groups Q, R, and S on
the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.
(a) What could the group of materials P be?
(b) Name the substances Q. Give two examples of such substances.
(c) Name the substances R. Write two examples of such substances.
(d) Name the substances S. Give two examples of such substances.
(e) Out of Q, R and S, which substances are malleable and ductile?
(b) Substances Q are Non-metals; Two examples are Carbon and Sulphur.
(c) Substances R are Metals; Two examples are Sodium and Aluminium
(d) Substances S are Metalloids; Boron and
Silicon (e) Substances R are malleable and ductile as they are metals.
Rate this question :
What is the need to heat solution?Together with Science
Pure copper sulphate can be obtained form an impure sample by the process of :Lakhmir Singh & Manjit Kaur - Chemistry
How will you separate a mixture of iron filings and sulphur powder without using carbon disulphide?Lakhmir Singh & Manjit Kaur - Chemistry
Describe a method to separate a mixture of camphor and sand.Lakhmir Singh & Manjit Kaur - Chemistry
How will you separate a mixture of iron filings and powdered carbon?Lakhmir Singh & Manjit Kaur - Chemistry
You are provided with a mixture containing sand, iron filings, ammonium chloride and sodium chloride. Describe the procedures you would use to separate these constituents from the mixture?NCERT Science - Exemplar
Which separation techniques will you apply for the separation of the following?
(a) The different pigments from an extract of flower petals
(b) Butter from curd
(c) Oil from water
(d) Tea leaves from tea
(e) Iron pins from sand
(f) Wheat grains from husk
(g) Fine mud particles floating in water.Together with Science
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water?Lakhmir Singh & Manjit Kaur - Chemistry