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प्रश्न
Why are bells made of metals?
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उत्तर
Metals have sonorous property. Ringing sound produce by metals is known as sonorous. So, the bells are made of metals.
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संबंधित प्रश्न
State one use of Silver.
The atomic number of an element X is 12.
(a) What must an atom of X do to attain the nearest inert gas electron configuration?
(b) Which inert gas is nearest to X?
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Give reasons
Aluminium is used in making aircrafts.
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
Write name.
The device used for grinding an ore.
Soft metal : Na : : hard metal : _______
Aluminium: _______: gold : : electric insulator
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
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.
