11th Class Chemistry Chapter 16 MCQ Test with Answer

Question # 1

Why phenolphtahalein indicator is more apropriate to se durng the titrations which inole a strong acid and a strong base.

Because it is iteslf weakly cidic A
Because the pH at ath equivalence point as well as the pH over where the colour of phenolphthalein changes match each oterh B
Becauwe teh solution at the end of titrationis acidic C
Beacuse the solutin at the end of titratic is basic D

Question # 2

Which of the following is the most suitable indicator for the titration of a strong acid and a storng base.

Phenolphthalein A
Methyl orrange B
Universal indicator C
Litmus D

Question # 3

While takig able a reading with a burette, why it is always advisibel to read the lower meniscus for the colorless liquids and the upper meniscus for the coloured liquids.

Because it is more convenient A
Becuse colorless liquids have more surface tension than colored liquids B
Because of the parallax effect C
Beacuse lower menisucs does not exist for colored liquids D

Question # 4

What is the the typical volume of solution a pipette delivers in titration

25 ml A
10 ml B
50 ml C
100 ml D

Question # 5

Eating an drinking in the lab is

Allowed during breaks A
Allowed if you'r creful B
Strictly proibiteed C
Allowed int he chemistry lab but not physics D

Question # 6

Before starting a titration , the burette should be

Headed A
Drived completely B
Washed with distiled water only C
Rinsed with the solutin it will contain D

Question # 7

Which of the followign pairs would require methly orinage as a a indicator

Strong acid and strong base A
Weak acid and sgtrong base B
Strong acid and weak base C
Weak acia and weak base D

Question # 8

The addition of HCl to a carbonate salt leads to.

Effervescene=ce A
Blue colour formation B
White precipitate C
No visible reaction D

Question # 9

A white precipitate that dissolves in excess ammonia is likely to be

Zinc hydroxide A
Calcium cabonate B
Lead Iodide C
Barium sulphate D

Question # 10

Which apparatus is used ot deliver a variiable volume of soluton in titration .

Pipette A
Burette B
Beaker C
Measuring cylinder D

Question # 11

Which cation gives a white gelatinous precipitate upon the addition of aueoeous ammonia.

Cr3+ A
Cr2+ B
Zn2+ C
Al3+ D

Question # 12

A salt solutingives a brick red flame test. The catio present ins likely

Na+ A
K+ B
Ca2+ C
Sr2+ D

Question # 13

Which is the proper way to smell a chemical

Inhale deeply A
Waft she vapour toward your nose B
Suniff directly C
Open the bottle under our nose D

Question # 14

The brown ring tests a confirmatory test for which acid radical

Nitrate A
Chloride B
Sulfate C
Carbonate D

Question # 15

The chromyl chlorikle test is a specific confirmatory tst for

Chloride ions A
Bromide ion B
Iodide ions C
sulfate ions D

Question # 16

The end point of a titration is indicated by

Formation of a gas A
Change in temperatutere B
Colour change of the indicator C
Change in pressure D

Question # 17

Why is it important to usea piptte in titration

To hold the acid A
To measure a fixed volume of the solution accurately B
To detect the endpoint C
To mix the acid and alkali D

Sr.#	Question	Answer
1	The addition of HCl to a carbonate salt leads to.	A. Effervescene=ce B. Blue colour formation C. White precipitate D. No visible reaction
2	The end point of a titration is indicated by	A. Formation of a gas B. Change in temperatutere C. Colour change of the indicator D. Change in pressure
3	While takig able a reading with a burette, why it is always advisibel to read the lower meniscus for the colorless liquids and the upper meniscus for the coloured liquids.	A. Because it is more convenient B. Becuse colorless liquids have more surface tension than colored liquids C. Because of the parallax effect D. Beacuse lower menisucs does not exist for colored liquids
4	What is the the typical volume of solution a pipette delivers in titration	A. 25 ml B. 10 ml C. 50 ml D. 100 ml
5	The chromyl chlorikle test is a specific confirmatory tst for	A. Chloride ions B. Bromide ion C. Iodide ions D. sulfate ions
6	Lab coats are important becausse they.	A. Are fashionable B. Prevent contamination and protect clothing C. Make you feel like a scientist D. Keep you warm
7	Why is it important to usea piptte in titration	A. To hold the acid B. To measure a fixed volume of the solution accurately C. To detect the endpoint D. To mix the acid and alkali
8	A salt solutingives a brick red flame test. The catio present ins likely	A. Na+ B. K+ C. Ca2+ D. Sr2+
9	The brown ring tests a confirmatory test for which acid radical	A. Nitrate B. Chloride C. Sulfate D. Carbonate
10	Which of the followig is not a component of titration	A. Pipette B. Burette C. Test Tube D. Conicla flask

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11th Class Chemistry Chapter 16 MCQ Test with Answer

MCQ's Test For Chapter 16 "Lab Safety and Practical Skills"

Lab Safety and Practical Skills

Why phenolphtahalein indicator is more apropriate to se durng the titrations which inole a strong acid and a strong base.

Which of the following is the most suitable indicator for the titration of a strong acid and a storng base.

While takig able a reading with a burette, why it is always advisibel to read the lower meniscus for the colorless liquids and the upper meniscus for the coloured liquids.

What is the the typical volume of solution a pipette delivers in titration

Eating an drinking in the lab is

Before starting a titration , the burette should be

Which of the followign pairs would require methly orinage as a a indicator

The addition of HCl to a carbonate salt leads to.

A white precipitate that dissolves in excess ammonia is likely to be

Which apparatus is used ot deliver a variiable volume of soluton in titration .

Which cation gives a white gelatinous precipitate upon the addition of aueoeous ammonia.

A salt solutingives a brick red flame test. The catio present ins likely

Which is the proper way to smell a chemical

The brown ring tests a confirmatory test for which acid radical

The chromyl chlorikle test is a specific confirmatory tst for

The end point of a titration is indicated by

Why is it important to usea piptte in titration

Prepare Complete Set Wise Chapter 16 "Lab Safety and Practical Skills" MCQs Online With Answers

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