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Reaction of Metals with Water or Steam

Fill in the f...

Question

Fill in the following blanks with suitable words:
(a) Magnesium liberates ........ gas on reacting with hot boiling water.
(b) The white powder formed when magnesium ribbon burns in oxygen is of...
(c) Ordinary aluminium strips are not attacked by water because of the presence of a layer of ....on the surface fo aluminium.
(d) A metal having low melting point is ... but a non-metal having very high melting point is ...
(e) Calcium is .... reactive metal than sodium.

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Solution

(a) hydrogen
(b) magnesium oxide
(c) aluminium oxide
(d) sodium, diamond
(e) less

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Similar questions

Q. Fill in the following blanks with suitable words:
(a) Magnesium liberates ............... gas on reacting with hot boiling water.
(b) The white powder formed when magnesium ribbon burns in oxygen is of ....................
(c) Ordinary aluminium strips are not attacked by water because of the presence of a layer of ................. on the surface of aluminium.
(d) A metal having low melting point is ..................... but a non-metal having very high melting point is ..............
(e) Calcium is a ................. reactive metal than sodium.

Q. Name : [5 MARKS]
(a) A liquid non-metal.
(b) A metal with dull appearance.
(c) A metal with low melting and boiling points.
(d) A non-metal with very high melting and boiling points.
(e) A metal which can float on water.
(f) A metal which can be cut with a knife.
(g) A metal which is a bad conductor of heat and electricity.
(h) A non-metal which is ductile.
(i) A non-metal used in alloys.
(j) A non-malleable metal.

Q. From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:
(a) which reacts with water only on boiling, and
(b) another which does not react even with steam.

Q. Which among the following statements is incorrect for magnesium metal?

(a) It burns in oxygen with a dazzling white flame.
(b) It reacts with cold water to form magnesium oxide and evolves hydrogen gas.
(c) It reacts with hot water to form magnesium hydroxide and evolves hydrogen gas.
(d) It reacts with steam to form magnesium hydroxide and evolves hydrogen gas.

Q. Fill in the blanks.

(a) Phosphorus is a very non-metal.
(b) Metals are conductors of heat and .
(c) Iron is reactive than copper.
(d) Metals react with acids to produce gas.

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