| Metals | Non-Metals |
|
When metals are heated with oxygen, they form ionic oxides which are basic in nature and form bases on dissolving with water. This turn red litmus paper to blue. |
When non-Metals are heated with oxygen, they form covalent oxides which are acidic in nature, which form acid on dissolving with water. This turn blue litmus paper to red. |
|
They are electro positive, lose electrons readily and become a positive ion. |
They are electro negative, gain electrons and become negative ions. |
|
Metals are lustrous. |
Non-metals are non-lustrous; graphite is the exception |
|
Reducing agents. |
Good oxidizing agents. |
|
Metals are the good conductors of electricity and heat. |
Non-metals are non-conductors of electricity and heat; graphite is the exception |
|
All metals are solids except mercury. |
Non-metals are in solid-liquid and gaseous states |
Answered by Sudhanshu | 1 year ago
Provide Some Important MCQ Questions for Class 10 Science Metals and Non-Metals with Answers?
Give reasons why copper is used to making hot water tanks and not steel (an alloy of iron)
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels
Give reasons
(a) Platinum, gold and silver are used to make jewellery.
(b) Sodium, potassium and lithium are stored under oil.
(c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
(d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.