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MCQs

Total Questions : 350 | Page 3 of 35 pages
Question 21. Generally, the alkanes are said to have been
  1.    reactive
  2.    unreactive
  3.    highly reactive
  4.    stable
 Discuss Question
Answer: Option B. -> unreactive
Answer: (b).unreactive
Question 22. Free radical substitution is the over all reaction alkanes (saturated hydrocarbons) and halogens (Group-VII elements) involving
  1.    initiation step
  2.    propagation step
  3.    termination step
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 23. Carbon monoxide (CO) poisoning can cause which of the following in a person.
  1.    dizziness only
  2.    unconsciousness only
  3.    heart attack
  4.    dizziness and unconsciousness
 Discuss Question
Answer: Option D. -> dizziness and unconsciousness
Answer: (d).dizziness and unconsciousness
Question 24. Catalytic converters used in cars used to
  1.    oxidize carbon monoxide
  2.    reduce nitrogen oxides
  3.    oxidize unburnt hydrocarbons
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 25. In car engine, the combustion of octane (C₈H₁₈) is done in
  1.    petrol
  2.    air
  3.    radiator fluid
  4.    gear oil
 Discuss Question
Answer: Option A. -> petrol
Answer: (a).petrol
Question 26. Consider the reaction: Al(s) + O₂ (g) → Al₂O₃. Moles of Al(s) needed to balance the equation are
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option D. -> 4
Answer: (d).4
Question 27. Consider the reaction: P(s) + O₂(g) → P₄O₁₀(s). Moles of P(s) needed to balance the equation are
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option D. -> 4
Answer: (d).4
Question 28. Consider the reaction: Al(s) + O₂(g) → Al₂O₃. Moles of oxygen (O₂) needed to balance the equation will be
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option C. -> 3
Answer: (c).3
Question 29. Consider the reaction: S(s) + O₂(g) → SO₂. If oxidation is allowed to continue, the product formed is
  1.    SO₂ (g)
  2.    SO₃(g)
  3.    S₂O₃(s)
  4.    S₂O₄(aq)
 Discuss Question
Answer: Option B. -> SO₃(g)
Answer: (b).SO₃(g)
Question 30. Nitric acid is a good
  1.    oxidizing agent
  2.    reducing agent
  3.    reactant
  4.    none of above
 Discuss Question
Answer: Option A. -> oxidizing agent
Answer: (a).oxidizing agent

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