11th Class Chemistry Chapter 16 MCQ Test with Answer

Question # 1

The chromyl chlorikle test is a specific confirmatory tst for

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

Question # 2

Which cation forms a white precipitate with NaOH that dissolves in excess NaOH

Mg2+ A
Zn2+ B
Ca2+ C
Ba2+ D

Question # 3

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

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

Question # 4

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 # 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

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 # 7

Which of the followig is not a component of titration

Pipette A
Burette B
Test Tube C
Conicla flask D

Question # 8

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 # 9

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 # 10

Lab coats are important becausse they.

Are fashionable A
Prevent contamination and protect clothing B
Make you feel like a scientist C
Keep you warm D

Question # 11

Which of the followign is a primary standard solution.

NaOH A
Na2CO3 B
KOH C
HCl D

Question # 12

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 # 13

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 # 14

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 # 15

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 # 16

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

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

Question # 17

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

Sr.#	Question	Answer
1	On dry heating test for salt analyshat turens limewater milky suggests the presence of.s, the evolution of coloriess, odouriess gas ta	A. Carbonate ion B. Chloridei on C. Sulfate ion D. Nitrate ion
2	Why phenolphtahalein indicator is more apropriate to se durng the titrations which inole a strong acid and a strong base.	A. Because it is iteslf weakly cidic B. Because the pH at ath equivalence point as well as the pH over where the colour of phenolphthalein changes match each oterh C. Becauwe teh solution at the end of titrationis acidic D. Beacuse the solutin at the end of titratic is basic
3	The brown ring tests a confirmatory test for which acid radical	A. Nitrate B. Chloride C. Sulfate D. Carbonate
4	The chromyl chlorikle test is a specific confirmatory tst for	A. Chloride ions B. Bromide ion C. Iodide ions D. sulfate ions
5	Which cation gives a white gelatinous precipitate upon the addition of aueoeous ammonia.	A. Cr3+ B. Cr2+ C. Zn2+ D. Al3+
6	Eating an drinking in the lab is	A. Allowed during breaks B. Allowed if you'r creful C. Strictly proibiteed D. Allowed int he chemistry lab but not physics
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	Which of the followign is a primary standard solution.	A. NaOH B. Na2CO3 C. KOH D. HCl
9	Which is the proper way to smell a chemical	A. Inhale deeply B. Waft she vapour toward your nose C. Suniff directly D. Open the bottle under our nose
10	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

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