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प्रश्न
Mention two uses of the following metals and non-metals
Oxygen
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उत्तर
It is used by all living beings for breathing.
It is important for combustion.
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संबंधित प्रश्न
State five uses of metals.
State one use of the following metal:
Iron
The alloy in which one of the metals is mercury is called an ______.
The electrical conductivity and melting point of an alloy is ______ than that of pure metals.
For the reduction of a metal oxide, suggest a reducing agent other than carbon.
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
A metal with melting point less than 50°C is
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
______ is a liquid metal.
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
State two important uses of following metal.
Uses of copper
State two important uses of following metals:
Uses of iron
State two important uses of the following metal.
Uses of magnesium
Why are alkali metals kept in kerosene oil?
Write name.
The reagent that dissolves noble metals.
Give reasons for the following:
Most metals conduct electricity well.
What is it made from? Why?
Pots and pans
Match the columns.
| Group A | Group B |
| 1) Copper and Zinc | a) Brass |
| 2) Copper and Tin | b) Bronze |
| c) Stainless steel |
The electronic configurations of three elements X, Y and Z are X – 2, 8; Y – 2, 8, 7 and Z – 2, 8, 2. Which of the following is correct?
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
______ is the metallic element.
