The internal size of mould used in brick preparation is A. Equal to the size of a fully burnt brick B. Smaller than the size of a fully burnt brick C. Greater than the size of a fully burnt brick D. None of the above

The correct answer is: B. Smaller than the size of a fully burnt brick.

The internal

size of the mould used in brick preparation is smaller than the size of a fully burnt brick. This is because the brick shrinks when it is fired. The amount of shrinkage depends on the type of clay used and the firing temperature.

Option A is incorrect because the internal size of the mould is smaller than the size of a fully burnt brick.

Option C is incorrect because the internal size of the mould is smaller than the size of a fully burnt brick.

Option D is incorrect because

the internal size of the mould is smaller than the size of a fully burnt brick.