Question 1

Which type of organic reaction involves the addition of a substance X–Y to the multiple bond of an unsaturated reactant to yield a saturated product with only single bonds?

Accepted Answer

Addition reaction

Question 2

When ethylene ($$CH_2$$=$$CH_2) $$reacts with hydrogen ($$H_2) in $$the presence of a palladium catalyst, what is the product?

Accepted Answer

$$CH_3CH_3$$

Question 3

Which of the following best describes the process of hydrogenation of vegetable oils?

Accepted Answer

It converts unsaturated oils to saturated fats.

Question 4

What is the major product when 2-methylpropene reacts with HBr according to Markovnikov’s rule?

Accepted Answer

2-bromo-2-methylpropane

Question 5

Which statement about free radical halogenation of alkanes is correct?

Accepted Answer

The major product is formed from the most stable radical intermediate.

Question 6

What is the product of the following reaction: $$CH_3CH_2CH_2CH=$$CHCH_3$$ + H_2$ \xrightarrow{Pd}$$ ?

Accepted Answer

$$CH_3CH_2CH_2CH_2CH_2CH_3$$

Question 7

Which of the following is a substitution reaction?

Accepted Answer

$$CH_4$$ + $$Cl_2$$ \rightarrow CH_3Cl + HCl$$

Question 8

Which of the following best describes the role of bromine ($$Br_2) in $$testing for unsaturation in organic compounds?

Accepted Answer

Bromine reacts with unsaturated compounds and the color disappears.

Question 9

Which of the following is the correct order of stability for free radicals formed during halogenation of alkanes?

Accepted Answer

3° \u003e 2° \u003e 1°

Question 10

What is the major product when propane reacts with $$Cl_2$$ under UV light?

Accepted Answer

$$CH_3CHClCH_3$$

Question 11

Which type of reaction is shown by the conversion of cis-2-butene to trans-2-butene?

Accepted Answer

Rearrangement reaction

Question 12

Which of the following is a polymer formed from the monomer styrene?

Accepted Answer

Polystyrene

Question 13

What is the repeating unit in the polymer formed from ethylene?

Accepted Answer

$$-CH_2CH_2-$$

Question 14

Which of the following is true about aromatic compounds such as benzene?

Accepted Answer

They are unusually stable due to resonance.

Question 15

Which type of reaction do aromatic compounds typically undergo with $$Cl_2$$, $$Br_2$$, or $$HNO_3$$?

Accepted Answer

Electrophilic aromatic substitution

Question 16

What is the product of the complete chlorination of methane ($$CH_4) $$with $$Cl_2$$?

Accepted Answer

$$CCl_4$$

Question 17

Which of the following is a correct description of Markovnikov’s rule?

Accepted Answer

The hydrogen attaches to the double-bond carbon with more hydrogens.

Question 18

Which of the following is a chain-growth polymer?

Accepted Answer

Polyethylene

Question 19

What is the main difference between cis- and trans-polyisoprene in terms of physical properties?

Accepted Answer

Trans isomers are tough and nonelastic.

Question 20

Which of the following is the correct systematic name for methylbenzene?

Accepted Answer

Toluene

Organic Reaction Types and Alkene Chemistry: Addition, Substitution, and Polymerization

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