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प्रश्न
Name the following:
A halogen which is a solid at room temperature.
उत्तर
Iodine
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संबंधित प्रश्न
Write the name and formulae of a metal hydride.
State two important uses of following metals:
Uses of iron
State two important uses of following metal
Uses of lead
Give the general characteristics of:
Alkaline earth metals with reference to
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Why is hydrogen placed with alkali metals?
Why are alkali metals kept in kerosene oil?
What is it made from? Why?
Electric cables
With reference to the following metals state their use in daily life metal:
iron
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Name the following:
The chemical compound responsible for the green deposit on the surface of articles of copper.
Soft metal : Na : : hard metal : _______
Complete the following flow chart.
An element which is always lustrous, malleable and ductile is ______.
Assertion: Mercury is solid in room temperature.
Reason: Mercury is a non-metal.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
Which of the following is not a metal?
The metal can be cut with a knife ______.
The typical shine of metals is called ______.
All gases are ______.
Silver and copper are very good conductors of electricity.
