Which of the following sedimentary rocks changes into quartzite by metamorphic action ?

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In which of the following directions, the strength of timber is maximum ?

A. parallel to grains B. 45° to grains C. perpendicular to grains D. same in all directions...

The process of mixing clay, water and other ingredients to make brick is known as______________?

A. kneading B. moulding C. pugging D. drying...

The normal consistency of ordinary Portland cement is about________________?

A. 10% B. 20% C. 30% D. 40%...

The proportions of lime and sand in the mortar normally used in brick construction are_______________?

A. 1:2 B. 1:4 C. 1:6 D. 1:8...

Minimum width of landing should be_______________?

A. equal to width of stairs B. half the width of stairs C. twice the width of stairs D. one fourth the width of stairs...