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- 1. Multiple Choice
What is the ions that responsible to show the acidic property of a substance?
Hydroxide ion, OH-
Nitrate ion
Hydrogen ion, H+
Oxide ion, O 2-
- 2. Multiple Choice
When hydrogen chloride gas is added into a beaker containing water, it will
react with water and produce colorless solution
Dissolve in water and produce H+ ions
Ionise in water and produce H+ ions
remain as molecules
- 3. Multiple Choice
What will happen to the bulb that connect to beaker containing ammonia gas that dissolve in propanone?
Bulb lights up
Bulb do not lights up
Turns from red to blue
Turn from blue to red
- 4. Multiple Choice
Which of the substance is a strong acid?
NH3
NaOH
CH3COOH
HNO3
- 5. Multiple Choice
Which of the substance is a weak alkali?
sodium hydroxide solution
ammonia gas
ammonia solution
Potassium hydroxide solution
- 6. Multiple Choice
Which statement is correct about an acid?
The higher the concentration of acid, the higher the pH value
The lower the concentration of acid, the lower the pH value
The higher the concentration of H+ ions, the lower the pH value
The higher the concentration of H+ ions, the higher the pH value
- 7. Multiple Choice
Which statement is correct about an alkali
Strong alkali has low pH value
Strong alkali ionise partially in water
Strong alkali has high concentration of H+ ions
Strong alkali dissociate completely in water
- 8. Multiple Choice
Why pH value for ethanoic acid is higher than nitric acid with the same concentration ?
ethanoic acid is more strong than nitric acid
Ethanoic acid ionise completely in water
Ethanoic acid ionise partially in water
Ethanoic acid has high concentration of H+ ions than nitric acid
- 9. Multiple Choice
When ammonia gas is added into water, it will ionise and produce ion X.
Which statement is correct about ion X?
[choose more than 1 answer]
Presence of ion X will turn red litmus paper to blue
ion X is hydroxide ion
Presence of ion X give the pH value between 8 to 14
Presence of free moving ions X, made the bulb lights up.
- 10. Multiple Choice
Which statements are correct about acid and alkali
[You can choose more than 1 statement]
Strong acid contain high concentration of hydrogen ions
Strong alkali contain high concentration of hydroxide ions
HCl is a strong alkali
pH value for ammonia solution is 14
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