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Find the centre of gravity of a right circular solid cone of height 40 mm and radius
30 mm from the top vertex.

A) 1cm B) 3cm C) 1.30 D) 2.7 ‏مه‎

Smith’s test on stones is used to find
A) Presence of soluble matter B) Toughness of a stone

C) Crystallisation of CaSO, D) Rate of wear of stones

Articles prepared from clay which is burnt at low temperature and cooled down slowly
is known as

A) Stoneware B) Porcelain
C) Whiteware D) Earthenware

Which of the following brick is prepared from clay containing a higher percentage
of iron ?

A) Fire brick B) Paving brick
C) Curved sector brick D) Acidic brick

Which of the following lime contains more than 30 percentage of clay ?
A) Fat lime 8) Hydraulic lime ©) Poor lime D) Quick lime

Identify the defect occurs to timber when it is converted to commercial form.
A) Wane B) Sap strain
C) Callus D) Druxiness

Which of the following scaffolding is preferred to do construction work on upper part
of a multi-storeyed building ?

A) Trestle scaffolding B) Needle scaffolding
C) Mason’s scaffolding D) Bricklayer’s scaffolding

The external jamb of a door or a window opening at right angles to the wall face is
known as

A) Rebate B) Transome C) Reveal D) Mullion

When the final coat of paint has not sufficient opacity, the background is clearly seen.
This defect is known as

A) Wrinkling B) Grinning C) Running D) Bloom