What Is the By-Product of Burning Coal That Can Be

question 8

Multiple Choice

What is the by-product of burning coal that can be added to concrete to replace some of the cement?

• A) Fly ash
• B) Slag
• C) Portland cement
• D) Lime stone

---

Definitions:

Spacing Effect

A phenomenon where learning is more effective when study sessions are spaced out over time rather than conducted in one single marathon session.

Repressed Memories

Memories that have been unconsciously blocked due to being associated with a high level of stress or trauma.

Early Childhood Abuse

Exposure to adverse experiences, including physical, sexual, and emotional abuse, during the early years of life, impacting long-term well-being and development.

Repression

A defense mechanism where distressing thoughts and feelings are unconsciously excluded from conscious awareness.