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प्रश्न
Name the following:
A halogen which is a solid at room temperature.
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उत्तर
Iodine
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संबंधित प्रश्न
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
State one use of Mercury.
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
Explain how, a reduction reaction of aluminium can be used for welding cracked machine parts of iron. Write a chemical equation for the reaction involved.
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Tick (√) the most appropriate answer.
Graphite is used :
Name a metal which is not malleable :
Name a metal which is best conductor of electricity :
State two important uses of following metal.
Uses of copper
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Most metals conduct electricity well.
With reference to the following metal state its use in daily life:
Magnesium
Name the following:
A metal used in flexible pipes.
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An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.
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Give an example of a metal which
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- is the best conductor of heat.
A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:
Metal atoms tend to have a maximum of ______ electrons in the outermost shell.
