Question:
Green sand mould indicates that:
Green sand mould indicates that:
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“Green” in casting = wet/moist condition, not color.
Updated On: May 22, 2026
- Polymer mould has been cured
- Mould has been totally dried
- Mould is green in colour
- Mould contains moisture
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The Correct Option is D
Solution and Explanation
Concept:
Green sand moulding is a common casting process where sand contains moisture.
Step 1: Meaning of "green".
The term “green” does NOT refer to color—it refers to the condition of sand.
Step 2: Composition of green sand.
It contains:
• Silica sand
• Clay (binder)
• Moisture (water)
Step 3: Role of moisture.
Moisture provides:
• Plasticity
• Strength
• Binding properties
Step 4: Interpretation.
Thus, green sand mould means mould is in moist condition. Final Answer: \[ \boxed{\text{Mould contains moisture}} \]
Step 1: Meaning of "green".
The term “green” does NOT refer to color—it refers to the condition of sand.
Step 2: Composition of green sand.
It contains:
• Silica sand
• Clay (binder)
• Moisture (water)
Step 3: Role of moisture.
Moisture provides:
• Plasticity
• Strength
• Binding properties
Step 4: Interpretation.
Thus, green sand mould means mould is in moist condition. Final Answer: \[ \boxed{\text{Mould contains moisture}} \]
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