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प्रश्न
State the position of the following in the periodic table:
Alkali metals
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उत्तर
They are placed in IA group, the first column on the left of the periodic table.
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संबंधित प्रश्न
Give reasons
Aluminium is used in making aircrafts.
Fill in the blank
_______ is a soft metal.
State two important uses of following metal
Uses of magnesium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
With reference to the following metals state their use in daily life metal:
Aluminium
Soft metal : Na : : hard metal : _______
The metal which is liquid at room temperature is ______.
Higher Order Thinking Skills.
Aakash noticed that the metal latch on gate was difficult to open during hot sunny days. However, it was not difficult to open the same latch at night. Aakash observed that the latch and the gate are exposed to the sun during day time.
- Formulate a hypothesis based on the information provided.
- Briefly state how you would test the hypothesis.
Generally, metals are solid in nature. Which one of the following metals is found in a liquid state at room temperature?
Match the following
| i. | Softest metal | a. | Copper |
| ii. | Hardest metal | b. | Sodium |
| iii. | Hardest non–metal | c. | Osmium |
| iv. | Ductility | d. | Diamond |
