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प्रश्न
Give reasons
Magnesium is used in fire works.
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उत्तर
Magnesium is used in fire works because it bums with a dazzling light.
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Generally, non-metals react with acids. ( )
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas?
(b) Write down word equations of all the reactions taking place in this process.
Fill in the following blanks with suitable words:
A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
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State one use of Gold.
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What is an alloy? How is an alloy made?
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Alkali metals
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
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What is it made from? Why?
Electric cables
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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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