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प्रश्न
Fill in the blank
_______ is a soft metal.
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उत्तर
Pure gold is a soft metal.
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संबंधित प्रश्न
Fill in the blanks:
Metals react with acids to produce _________ gas.
Give reasons for the following.
Sodium and potassium are stored in kerosene.
State one use of Aluminium.
Mention two uses of the following metals and non-metals
Oxygen
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
A metal which is neither ductile nor malleable is
State two important uses of following metal.
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State two important uses of following metal
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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
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Write name.
The device used for grinding an ore.
Write scientific reason.
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Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
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Complete the following flow chart.
The metal which is liquid at room temperature is ______.
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.
A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.
