Advertisements
Advertisements
प्रश्न
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
पर्याय
Iron
Sodium
Gold
Magnesium
Advertisements
उत्तर
Sodium
Explanation:
Metals are generally hard. This means that most of the metals cannot be cut easily. But sodium metal is soft and can be easily cut with a knife.
APPEARS IN
संबंधित प्रश्न
‘E’ is an element which reacts with oxygen to form an oxide E2O. An aqueous solution of E2O turns red litmus blue, so:
i. What is the nature of oxide E2O ?
ii. Write the name of element ‘E’.
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Food cans are coated with tin and not with zinc because ______.
A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.
In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.
Complete and balance the following equation:
Explain why, metals usually do not liberate hydrogen gas with dilute nitric acid.
You are given samples of three metals − sodium, magnesium and copper. Suggest any two activities to arrange them in order of their decreasing reactivities.
Name one metal which displaces silver from silver nitrate solution and one which does not.
What are noble gases
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
