Q26. The oxidation state of oxygen in OF² is_
- A.+2
- B.-2
- C.+1
- D.-1
Show answer & explanation
Answer: A) .+2
Oxidation and Reduction
36 MCQ questions with answers and explanations · page 2 of 2
Test yourself▶ 25 question test
Q27. The oxidation number of carbon in oxalic acid (H²,C²O⁴a) is_
- A.+4
- B.+2
- C.+3
- D.+1
Show answer & explanation
Answer: C) .+3
Q28. In which of the following the oxidation state of chlorine is +1?
- ACl²O
- BHCI
- CICI
- DHCIO⁴
Show answer & explanation
Answer: A) Cl²O
Q29. Which of the following is the compound having +2 oxidation state of oxygen?
- AF²O
- BMnO²
- CH²0²
- DCO²
Show answer & explanation
Answer: A) F²O
Q30. The oxidation state of sulphur in Na², S²O³ is_
- A.+2
- B.-2
- C.+3
- D.+4
Show answer & explanation
Answer: A) .+2
Q31. Which of the following nitrogen oxides has the highest oxidation state of nitrogen?
- ANO
- BN²O⁵,
- CN²O
- DNO²
Show answer & explanation
Answer: B) N²O⁵,
Q32. An oxidizing agent is a substance which ____
- Aincreases the oxidation number of the original element in a given substance
- BDecreases the oxidation number of the original element in a given substance
- Citself gets oxidized in a metabolic reaction
- Dloses electrons in a metabolic reaction
Show answer & explanation
Answer: A) increases the oxidation number of the original element in a given substance
Q33. In oxidation, 1. hydrogen is displaced from a substance. 2. an electropositive element is added to a substance or the proportion of electropositive elements increases. Select the correct answer using the code given below.
- Aonly 1
- Bonly 2
- CBoth 1 and 2
- DNeither nor 2
Show answer & explanation
Answer: A) only 1
Q34. Which of the following statements regarding 'oxidation' and 'reduction' are correct? 1. Oxidation involves the loss of electrons, while reduction involves the gain of electrons. 2. Oxidation involves the gain of electrons, while reduction involves the loss of electrons. 3. An oxidizing agent lowers the oxidation point, but a reducing agent increases the oxidation point. 4. An oxidizing agent increases the oxidation point, but a reducing agent decreases the oxidation point. Select the correct answer using the code given below.
- Aand 3
- B2 and 4
- C2 and 3
- D1 and 4
Show answer & explanation
Answer: D) 1 and 4
Q35. Which of the following is the strongest oxidising agent?
- Aoxygen
- Bchlorine
- CFluorine
- DIodine
Show answer & explanation
Answer: C) Fluorine
Q36. In the reaction ZnO + C Zn + CO, 'C' acts as which one of the following?
- Aacid
- Balkali
- Coxidant
- Dreducing agent
Show answer & explanation
Answer: D) reducing agent