The lintels are preferred to arches because______________?

A. arches require more headroom to span the openings like doors, windows etc.
B. arches require strong abutments to withstand arch thrust
C. arches are difficult in construction
D. all of the above
✅ The correct answer is option D.

The pressure acting on the stones in stone masonry construction should be_____________?

A. along the direction of bedding planes
B. at 45° to the direction of bedding planes
C. at 60° to the direction of bedding planes
D. perpendicular to the direction of bedding planes
✅ The correct answer is option D.

Advantage of a clamp compared to a kiln for burning bricks is that_______________?

A. it takes less time for burning
B. it gives more output of first class bricks
C. it has less initial cost
D. it is suitable when bricks are required in large numbers
✅ The correct answer is option C.