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प्रश्न
Give reasons
Aluminium is used in making aircrafts.
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उत्तर
Aluminium is used in making aircrafts because it is light and strong. It is mixed with other metals to make it stronger.
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
State one use of the following metal:
Aluminium
What is an alloy?
Mention two uses of the following metals and non-metals
Oxygen
State two important uses of following metal:
Uses of silver
State two important uses of following metals:
Uses of iron
State the position of the following in the periodic table:
Alkaline earth metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Sulphuric acid
Write scientific reason.
Sodium is always kept in kerosene.
The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2. Which of the two metals is more reactive? Write their reaction with dilute hydrochloric acid.
State the position of the following in the periodic table:
Halogens
With reference to the following metals state their use in daily life metal:
copper
With reference to the following metal state its use in daily life:
Magnesium
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
Which one of the following is an example for a metal?
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
______ is the first scientist who used the term element.
Why do metals appear shiny?
