Chapter 4 BLOCK MASONRY AND MARBLE WORK MCQs 9 min Score: 0 Attempted: 0/9 Subscribe 1. Size of hollow blocks of concrete is kept: (A) None of these (B) 39cm x 18cm x 10cm (C) 39cm x 15cm x 20cm (D) 39cm x 19cm x 30cmShow All Answers 2. Minimum strength of concrete blocks should be: (A) 50kg/cm² (B) 40kg/cm² (C) 20kg/cm² (D) 30kg/cm²Show All Answers 3. Hollow concrete block masonry is suitable due to: (A) Heat proof (B) All of these (C) Light proof (D) Sound proofShow All Answers 4. Masonry suitable for multistory building: (A) Hollow blocks (B) Solid concrete blocks (C) Bricks (D) StoneShow All Answers 5. Thickness of mortar for block masonry: (A) 20-20mm (B) 5-20mm (C) 25-30mm (D) 30-40mmShow All Answers 6. Solid layer is provided at this position of opening: (A) Top (B) Sides (C) Bottom and sides (D) BottomShow All Answers 7. In concrete blocks masonry, sill at the opening is extended for the length of: (A) 10cm (B) 15cm (C) 30cm (D) 20cmShow All Answers 8. Size of aggregates in manufacturing of hollow concrete block should be: (A) 5mm to 10mm (B) 8mm to 14mm (C) 6mm to 12mm (D) 4mm to 8mmShow All Answers 9. ______ area of gross block section should be of concrete: (A) 40% (B) 60% (C) 70% (D) 80%Show All Answers