SPECIAL PLASTERS

MCQs: Special Types of Plaster (SSC JE Focus) Q1. Which plaster is mainly used for decorative architectural finishes on external walls? A. Mud plaster B. Stucco plaster C. Acoustic plaster D. Waterproof plaster Q2. Rough cast plaster is best described as: A. Smooth lime finish B. Plaster with pigments only C. Plaster with coarse aggregate dashed on surface D. Gypsum-based plaster Q3. Pebble dash plaster is especially suitable for: A. Interior bedrooms B. False ceilings C. Exposed external walls D. Water tanks Q4. Which plaster is used to absorb sound and reduce echo? A. Stucco plaster B. Acoustic plaster C. Scraped plaster D. Mud plaster Q5. Scraped plaster is obtained by: A. Polishing the surface B. Washing with water C. Scraping the top coat after setting D. Adding pebbles to mortar Q6. Which special plaster is recommended for bathrooms and basements? A. Fire-resistant plaster B. Waterproof plaster C. Acoustic plaster D. Stucco plaster Q7. Fire-resistant plaster is generally based on: A. Clay B. Lime C. Gypsum D. Mud Q8. Barium plaster is mainly used in: A. Cold storage buildings B. Recording studios C. Radiology/X-ray rooms D. Water retaining structures Q9. Heat-insulating plaster commonly uses which lightweight aggregate? A. Basalt B. Vermiculite C. Granite D. Quartz Q10. Which plaster finish helps in hiding minor surface defects? A. Smooth plaster B. Scraped plaster C. Gypsum plaster D. Cement wash Q11. Pebble dash plaster is also known as: A. Wet dash B. Dry dash C. Lime dash D. Mud dash Q12. Acoustic plaster works mainly on the principle of: A. Reflection of sound B. Refraction of sound C. Absorption of sound D. Transmission of sound Q13. Stucco plaster mainly consists of: A. Cement/lime, sand, and pigments B. Gypsum and fiber C. Clay and straw D. Cement and coarse aggregate only Q14. Mud plaster is preferred mainly because it is: A. Waterproof B. Fireproof C. Eco-friendly and breathable D. Soundproof Q15. Which plaster provides the highest resistance against severe weather conditions? A. Mud plaster B. Gypsum plaster C. Pebble dash plaster D. Lime plaster --- ✅ Answer Key 1. B 2. C 3. C 4. B 5. C 6. B 7. C 8. C 9. B 10. B 11. B 12. C 13. A 14. C 15. C