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Preparations and Uses of Sodium Bicarbonate and Common Salt

What change w...

Question

What change would you observe in the calcium hydroxide solution taken in tube $B$ ?

A

It will turn milky

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B

It will turn yellow

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C

It will turn blue

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D

None of these

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Solution

The correct option is A It will turn milky
$C a (O H)_{2}$ in test tube $B$ turns milky due to formation of insoluble precipitates of $C a C O_{3}$ as:
$C a (O H)_{2} + C O_{2} \to C a C O_{3} + H_{2} O$

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Similar questions

Q. In the tube B containing calcium hydroxide solution turns ________ by the formation of calcium carbonate.

Q. Zinc sulphate forms a colourless solution in water. Will you observe any colour change on adding copper turning in it?

Q. Question 53
Look at the figure and answer the following questions.

(a) What change would you observe in the calcium Hydroxide solution taken in tube B?

(b) Write the reaction involved in test tube A and B respectively

(c) If Ethanol is given instead of Ethanoic acid, would you expect the same change?

(d) How can a solution of lime water be prepared in the laboratory?

Q. An experiment is set up as shown. Test tube (i) contains a solution of potassium hydroxide. Test tube (ii) and (iii) contain freshly prepared limewater. A conical flask between (ii) and (iii) contains germinating seeds. Air is blown into the set up through pipe X. What do you think will be the appearance of limewater in test tubes (ii) and (iii) after some time?

Option	Test tube (ii)	Test tube (iii)
A.	No change is seen in limewater.	No change is seen in limewater.
B.	Limewater turns milky.	No change is seen in limewater.
C.	No change is seen in limewater.	Limewater turns milky.
D.	Limewater turns milky.	Limewater turns milky.

Q. Question 18
Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turnings in it?

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