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General Science

ALKENE MCQs

Total Questions : 8

Question 1. Alkene under high temperature and high pressure forms
  1.    Alcohol
  2.    Polyalkyne
  3.    Polyalkane
  4.    Polyalkene
 Discuss Question
Answer is Option C. -> Polyalkane
Question 2. 4-chlorobut-1-ene is the name of which among the following alkenes
  1.    CH2Cl-CH2=CH-CH2
  2.    CH2Cl-CH2-CH-CH2
  3.    CH2Cl=CH2-CH=CH2
  4.    CH2Cl-CH2-CH=CH2
 Discuss Question
Answer is Option D. -> CH2Cl-CH2-CH=CH2
Question 3. Which of the following alkenes is the most stable
  1.    (CH3)2C=CH2
  2.    (CH3)2C=CHCH3
  3.    (CH3)2C=C(CH3)2
  4.    none of the above
 Discuss Question
Answer is Option C. -> (CH3)2C=C(CH3)2
Question 4. What catalyst is used in making esters?
  1.    sodium hydroxide
  2.    iron
  3.    sulfuric acid
  4.    lithium oxide
 Discuss Question
Answer is Option C. -> sulfuric acid
Question 5. Which correctly represents an incomplete combustion of pentane?
  1.    C5H12 + 8O2 ⟶ 5CO2 + 6H2O
  2.    C5H12 + 8O2 ⟶ 4CO + CO2 + 6H2O
  3.    C5H12 + 6O2 ⟶ 4CO + CO2 + 6H2O
  4.    C5H12 + 5O2 ⟶ 4CO + CO2 + 4H2O + 2H2
 Discuss Question
Answer is Option C. -> C5H12 + 6O2 ⟶ 4CO + CO2 + 6H2O
Question 6. The first member of the alkene series is methene
  1.    True
  2.    False
 Discuss Question
Answer is Option B. -> False
Question 7. What is the empirical formula of 4-hydroxypent-2-ene?
  1.    C5H12O
  2.    C5H10O
  3.    CH2O
  4.    C5H9OH
 Discuss Question
Answer is Option B. -> C5H10O
Question 8. Which molecule is not produced when ethane reacts with bromine in the presence of ultraviolet light?
  1.    C2H4Br2
  2.    HBr
  3.    H2
  4.    C4H10
 Discuss Question
Answer is Option C. -> H2
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