| 1 |
The word acid is derived from the. |
- A. Greek word
- B. Latin word
- C. English word
- D. Arabic word.
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| 2 |
Basic solution have pH value. |
- A. Less than 7
- B. Greater than 7
- C. equal to 7
- D. None of these
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| 3 |
According to the Lewis concept acid is a substance which can. |
- A. Donate a proton
- B. Donate a pair of electron
- C. Accept a proton
- D. Accept a pair of electron.
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| 4 |
Acetic acid is a weak acid because it. |
- A. Is used in cooking and flavouring food.
- B. Has very low pH
- C. Is not fully ionized
- D. Does not contain any hydrogen ions.
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| 5 |
Which one is not a characteristic of an acid: |
- A. it turns red litmus blue
- B. it reacts with base to form salt and water
- C. Its aqueous solution conduct electric current
- D. it has sour taste
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| 6 |
According to Bronsted and Lowry concept a base is a substance that can accept. |
- A. Proton
- B. Electron pair
- C. Neutron
- D. Electron
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| 7 |
Who proved that the presence of hydrogen as the main constituent of all acids. |
- A. Lavoisier
- B. Humphrey Davy
- C. Dalton
- D. Arrhenius
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| 8 |
Which one gas is liberated when alkalies react with ammonium salts? |
- A. O<sub>2</sub>
- B. CO<sub>2</sub>
- C. H<sub>2</sub>
- D. NH3
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| 9 |
Which is used for cleaning agent for domestic and commercial purpose? |
- A. NaCl
- B. Na<sub>2</sub>CO<sub>3</sub>
- C. NaHCO<sub>3</sub>
- D. Na<sub>2</sub>SiO<sub>3</sub>
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| 10 |
Which gas is evolved when acids react with carbonates and bicarbonates? |
- A. Carbon monoxide
- B. Carbon dioxide
- C. Hydrogen
- D. Hydrogen chloride
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