The slump recommended for mass concrete is about

The thermosetting plastic

Most commonly used solvent in oil paints, is

Percentage of silica in a good brick earth lies between

Seasoning of timber is essential to remove

Plastic . . . . . . . .

The weight of 1 m<sup>3</sup> of brick earth, is about

The size of mould for bricks, is generally kept

Index number expressing the relative sizes of both coarse and fine aggregates, is called