11th Class Chemistry Chapter 16 MCQ Test with Answer

Question # 1

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 # 2

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 # 3

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 # 4

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 # 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 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 # 7

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

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

Question # 8

Which of the followign is a primary standard solution.

NaOH A
Na2CO3 B
KOH C
HCl D

Question # 9

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 # 10

The chromyl chlorikle test is a specific confirmatory tst for

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

Question # 11

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

Cr3+ A
Cr2+ B
Zn2+ C
Al3+ 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

addition of NH4OH to an aqueous solution of cation gives a green precipitate which turns brown upon standing, Which basic radical is indicated.

Cr3+ A
Cu2+ B
Fe2+ C
Fe3+ D

Question # 16

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 # 17

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

Sr.#	Question	Answer
1	A salt solutingives a brick red flame test. The catio present ins likely	A. Na+ B. K+ C. Ca2+ D. Sr2+
2	Which of the followig is not a component of titration	A. Pipette B. Burette C. Test Tube D. Conicla flask
3	Before starting a titration , the burette should be	A. Headed B. Drived completely C. Washed with distiled water only D. Rinsed with the solutin it will contain
4	A white precipitate that dissolves in excess ammonia is likely to be	A. Zinc hydroxide B. Calcium cabonate C. Lead Iodide D. Barium sulphate
5	Which cation gives a white gelatinous precipitate upon the addition of aueoeous ammonia.	A. Cr3+ B. Cr2+ C. Zn2+ D. Al3+
6	Which of the following is the most suitable indicator for the titration of a strong acid and a storng base.	A. Phenolphthalein B. Methyl orrange C. Universal indicator D. Litmus
7	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
8	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
9	The chromyl chlorikle test is a specific confirmatory tst for	A. Chloride ions B. Bromide ion C. Iodide ions D. sulfate ions
10	Which cation forms a white precipitate with NaOH that dissolves in excess NaOH	A. Mg2+ B. Zn2+ C. Ca2+ D. Ba2+

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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

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

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

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

The end point of a titration is indicated by

Eating an drinking in the lab is

Which is the proper way to smell a chemical

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

Which of the followign is a primary standard solution.

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.

The chromyl chlorikle test is a specific confirmatory tst for

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

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

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

Before starting a titration , the burette should be

addition of NH4OH to an aqueous solution of cation gives a green precipitate which turns brown upon standing, Which basic radical is indicated.

Lab coats are important becausse they.

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

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