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Chemistry
10th -
11thgrade
Quick Quiz Chapter 6 Acids, Bases and Salts
10 questions
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- 1. Multiple Choice
Which of the following is true about ammonia solution in methylbenzene?
Has pH value more than 7
No change on red litmus paper
Ionises partially to produce hydroxide ions
Ammonium ions and hydroxide ions move freely in the solution
- 2. Multiple Choice
Several drops of nitric acid are added to a test tube that is filled with potassium chloride solution. What is the most suitable pH value for the mixture?
2.0
5.5
7.0
9.8
- 3. Multiple Choice
Phosphoric acid is a weak acid that
has a pH value of 1.0
cannot neutralise alkaline solution
changes red litmus paper to blue
ionises partially in water to produce hydrogen ions
- 4. Multiple Choice
Which chemical equation represents a neutralisation reaction?
Mg + H2SO4 → MgSO4 + H2
ZnCl2 + 2HNO3 → Zn(NO3)2 + 2HCl
2HCl + CaCO3 → CaCl2 + CO2 + H2O
NaOH + CH3COOH → CH3COONa + H2O
- 5. Multiple Choice
14.9 g of solid potassium chloride, KCl needs to be dissolved in distilled water to produce 0.4 mol dm-3 potassium chloride solution, KCl. What is the volume of distilled water needed to dissolve the solid potassium chloride ?
[Molar mass of KCL = 74.5 g mol-1]
50 cm3
200 cm3
500 cm3
2 000 cm3
- 6. Multiple Choice
50 cm3 of 0.4 mol dm-3 sodium hydroxide solution, NaOH that is filled into a conical flask is titrated with 1.0 mol dm-3 of sulphuric acid, H2SO4. Determine the final volume of solution in the conical flask.
10.0 cm3
60.0 cm3
70.0 cm3
100.0 cm3
- 7. Multiple Choice
The following figure shows the steps taken in a laboratory activity. What is the purpose of conducting that laboratory activity?
To prepare soluble salt
To prepare insoluble salt
To purify salt that contains impurities
To identify anions that present in the salt solution
- 8. Multiple Choice
Which salt is not decomposed when heated strongly?
Zinc nitrate
Ammonium chloride
Potassium carbonate
Copper(II) sulphate
- 9. Multiple Choice
A sample of salt X is a soluble ammonium chloride salt.
You are required to verify the cations and anions that are present in that salt sample. What is the pair of reagents needed to confirm the presence of cation and anion?
Cation: Nessler reagent
Anion: Nitric acid and silver nitrate solution
Cation: Nessler reagent
Anion: Nitric acid and barium nitrate solution
Cation: Potassium hexacyanoferrate(III) solution
Anion: Nitric acid and barium nitrate solution
Cation: Potassium hexacyanoferrate(III) solution
Anion: Nitric acid and silver nitrate solution
- 10. Multiple Choice
The flow chart shows an observation that is obtained from an anion test. Solution Y contains two anions. The anions are possibly
sulphate ion and carbonate ion
nitrate ion and carbonate ion
sulphate ion and chloride ion
nitrate ion and chloride ion
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