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Tenth Grade (Grade 10) Reactions Questions

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Grade 10 Reactions
What is the formula of the ion hydrogen sulfite, which has a charge of -1?
  1. SO-13
  2. SO-14
  3. HSO-13
  4. HSO-14
Grade 10 Reactions
When zinc is exposed to air, zinc oxide is produced. What happens in this reaction?
  1. Zinc is oxidized, and oxygen is reduced.
  2. Zinc is reduced, and oxygen is oxidized.
  3. Both zinc and oxygen are oxidized.
  4. Both zinc and oxygen are reduced.
Grade 10 Reactions
Which of the following is not a reducing agent?
  1. CO2
  2. SO2
  3. NO2
  4. ClO2
Grade 10 Reactions
What happens when a strong acid reacts with a metal?
  1. The Kw value changes.
  2. The metal forms anions.
  3. Hydrogen gas is produced.
  4. The hydronium ion concentration increases.
Grade 10 Reactions
Hydrogen H2) is used for making                      .
  1. margarine only
  2. ammonia only
  3. salts
  4. margarine and ammonia
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