Which of the Following Initiators Is Used to Make Isotactic

question 39

Multiple Choice

Which of the following initiators is used to make isotactic polypropylene?

• A)Benzoyl peroxide
• B)CH₃CH₂CH₂CH₂Li
• C)BF₃
• D)Al(CH₂CH₃)₃,TiCl₄

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Definitions:

Continuous Reinforcement

This is a learning process in behavior modification where a reward follows every correct response, enhancing the likelihood of the behavior being repeated.

Negative Reinforcement

A behavioral psychology term where the removal of an undesirable outcome strengthens a specific behavior.

Partial Reinforcement

A conditioning schedule where responses are only occasionally reinforced, making the learned behavior more resistant to extinction.

Punishment

A concept in behavior psychology that involves the introduction of an unpleasant stimulus or the removal of a pleasant one following an undesired behavior, with the intention of decreasing that behavior.