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Nanoparticles

The charcoal ...

Question

The charcoal particles present in the given suspension are ____________ in water.

(A) soluble
(B) insoluble

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Solution

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Name :

(a) a chloride which is insoluble in cold water but dissolves in hot water,

(b) a chloride which is insoluble,

(c) two sulphates which are insoluble,

(d) a basic salt,

(e) an acidic salt,

(f) a mixed salt,

(g) a complex salt,

(h) a double salt,

(i) a salt whose solubility increases with temperature,

(j) a salt whose solubility decreases with temperature.

Q. Give one example in each case:
(a) A basic oxide which is soluble in water.
(b) A hydroxide which is highly soluble in water.
(c) A basic oxide which is insoluble in water.
(d) A hydroxide which is insoluble in water.
(e) A weak mineral acid.
(f) A base which is not an alkali.
(g) An oxide which is a base.
(h) A hydrogen containing compound which is not an acid.

Give one example in each case :

(a) A basic oxide which is soluble in water,

(b) A hydroxide which is highly soluble in water,

(c) A basic oxide which is insoluble in water,

(d) A hydroxide which is insoluble in water,

(e) A weak mineral acid,

(f) A base which is not an alkali,

(g) An oxide which is a base,

(h) A hydrogen containing compound which is not an acid,

(i) A base which does not contain a metal ion.

Q. a) two chlorides which are insoluble in water
b) two sulphates which are insoluble in water
c) two carbonates which are soluble in water
d) a non metallic sulphate soluble in water

Q. A substance (A) is water insoluble, on bubbling

C l_{2}

through its suspension in water, it produces a coloured aqueous solution forming a single product. (A) may be :

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