Name:

(a) two metals which are liquid at room temperature,

(b) metal which do not corrode easily

(c) a metal which lacks ductility,

(d) a non-metal which is lustrous,

(e) a non-metal which conducts electricity,

(f) a metal which is brittle,

(g) two elements which are monoatomic,

(h) two metallic oxides which are acidic,

(i) two metallic oxides which are amphoteric,

(j) two metallic which react with cold water,

(k) the compound responsible for green deposit on the surface of copper,

(l) a non-metal which can form a positive ion,

(m) a non-metal which shows reducing property,

(n) a metal whose oxide is reduced only by carbon.

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Solution

(a) Mercury and gallium
(b) Metals such as gold (Au) and platinum (Pt) present at the bottom of the activity series do not corrode easily.
(c) Mercury
(d) Iodine
(e) Graphite
(f) Zinc
(g) Neon , Argon
(h) CrO₃ , Mn₂O₇
(i) Al₂O₃,PbO
(j) Potassium , sodium
(k) Basic copper(II) carbonate
(l) Hydrogen and sulphur
(m) Hydrogen
(n) Iron

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(a) a soft metal.

(b) a metal which is brittle.

(d) a liquid metal.

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(a) a liquid non-metal,

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(d) a non-metal with very high m.p & b.p.,

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(i) a non-metal used in alloys.

(j) a non-malleable metal.

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