Construction of brick wall is carried out from with the help of . . . . . . . . in permanent lining.
A. Rider
B. Spider
C. Scaffold
D. Garland
Answer: Option C
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The required water for 1 ton of sand in hydraulic sand stowing is . . . . . . . .
A. 800 l
B. 600 l
C. 1100 l
D. 1200 l
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