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प्रश्न
Differentiate between metal and non-metal on the basis of their chemical properties.
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उत्तर १
| Metal | Non-metal |
| Metals are electropositive. | Non-metals are electronegative. |
| Oxides of metal are basic in nature. | Oxides of non-metals are acidic in nature. |
| Metals displace hydrogen from dilute acids. | They can’t replace hydrogen from dilute acids. |
| Metals form chlorides which are electrovalent or ionic compounds. | Non-metals form chlorides which are covalent compounds. |
| They react with water to form oxides and hydroxides. Some metals react with cold water, some with hot water, and some with steam. | They do not react with water. |
उत्तर २
| Chemical properties | Metals | Non-metals | |
| (i) | Reaction with oxygen | Metals react with oxygen to form basic oxides. | Non-metals react with oxygen to form acidic or neutral oxides. |
| (ii) | Reaction with water | Metals react with water to form metal hydroxide and hydrogen gas | Non-metals do not react with water. |
(iii) |
Reaction with dilute acid | Metals react with dilute acids to form metal salts and they displace hydrogen from acids. | Non-metals do not react with dilute acids. |
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
Write equations for the reactions of calcium and potassium with water.
Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the electron-dot structures for sodium, oxygen and magnesium.
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Name the metal which has been placed at the bottom of the reactivity series.
Fill in the following blank with suitable word:
Magnesium liberates ............... gas on reacting with hot boiling water.
Fill in the following blank with suitable word:
The white powder formed when magnesium ribbon burns in oxygen is of ....................
Fill in the following blank with suitable word:
Ordinary aluminium strips are not attacked by water because of the presence of a layer of ................. on the surface of aluminium.
Fill in the following blank with suitable word:
Calcium is a ................. reactive metal than sodium.
Which of the following elements would yield a basic oxide.
Na, S, C, K, H
Arrange the following metals in order of their chemical reactivity, placing the most reactive metal first:
Magnesium, Copper, Iron, Sodium, Zinc, Lead, Calcium.
Write the equation for the reaction of Zinc with dilute hydrochloric acid.
Name the products formed. Also indicate the physical states of all the substances involved.
Which non-metal has been placed in the reactivity series of metals?
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be:
(a) carbon
(b) sulphur
(c) chlorine
(d) phosphorus
The elements whose oxides can turn litmus solution red are:
(a) lithium and sodium
(b) copper and potassium
(c) carbon and hydrogen
(d) phosphorus and sulphur
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
What are noble gases
What is the characteristic of the electronic configuration of noble gases?
Where does the metal aluminium, used in the thermit process, occurs in the reactivity series of metals?
