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which of the ...

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which of the following is insoluble in dilute HCl (1)CdCl2 (2)PbCl2 (3)BiOCl (4)SbCl

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Q. A colourless crystalline salt

^{'} X^{'}

is soluble in dilute

H C l

N a O H

solution, it gives a white precipitate which is insoluble in excess of

N a O H

^{'} X^{'}

Q. Choose the correct answer form the alternatives given.
A solution of a compound

X

H C l

on treatment with a solution of

B a C l_{2}

gives a white precipitate of compound

Y

which is insoluble in conc.

H N O_{3}

H C l

X

imparts golden yellow colour to the flame.

X (solution in dilute HCl) (imparts golden yellow colour) + B a C l_{2} ⟶ Y w h i t e p p t C o n c . H N O_{3} + - ------- \to C o n c H c l I n s o l u b l e

What are compounds

X

Y

?

Q. Which sulphide is insoluble in dilute acids but soluble in alkalies?

Which of the following methods is generally used for preparing the

P b C O_{3}

1: Neutralisation - insoluble base & dilute acid

2: Neutralisation - alkali & dilute acid

3: Simple displacement - active metal & dilute acid

4: Direct combination

5: Precipitation [double decomposition]

Q. Assertion :A solution of

B i C l_{3}

in concentrated

H C l

when diluted with water gives white precipitate. Reason:

B i C l_{3}

forms insoluble

B i O^{+}, C l^{-}

when diluted with a large quantity of water.

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