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प्रश्न
Mention two uses of the following metals and non-metals
Aluminium
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उत्तर
It is used to make electric wires.
It is used to make utensils, cans, window fram’es, etc.
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संबंधित प्रश्न
State one use of the following metal:
Aluminium
State one use of the following metal:
Mercury
Brass is an alloy of copper and ______.
State the position of the following in the periodic table:
Alkali metals
Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
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.
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
What is it made from? Why?
A pair of tongs.
With reference to the following metal state its use in daily life:
Magnesium
Name the following:
A metal used in flexible pipes.
The minerals from which the metal can be separated economically are called _______.
Aluminium: _______: gold : : electric insulator
When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.
Electronic configuration of metal A is 2,8,1. Electronic configuration of metal B is 2,8,8,2. Which of the above metals is more reactive? Explain with reason.
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
Which of the following is not a metal?
Sodium is a hard metal.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
Compare the conductivity of metals and non–metals.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the reducing agent.
