Stones previous

Marble is an example of

• Igneous rocks

• Sedimentary rocks

• Metamorphic rocks

• None of these

The tool used for quarrying stones is

• Dipper

• Jumper

• Spalling hammer

• Priming needle

The coarseness of the grains of a mineral is known as

• Fracture

• Texture

• Structure

• Ligature

Attrition test on stone is done to find out

• Compressive strength

• Hardness

• Rate of wear

• Toughness

A stone is rejected if the water absorption is more than ...

• 30%

• 25%

• 20%

• 15%

The minimum hardness number for marble is about

• 3

• 5

• 8

• 10

Which of the following is a mineral

• Quartzite

• Laterite

• Granite

• Calcite

The colour of a mineral in its powdered from is known as

• Streak

• Lustre

• Texture

• Structure

Laterite is an example of

• Argillaceous rock

• Volcanic rock

• Organic rock

• Siliceous rock

The best type of ballast is

• Granite

• Sand stone

• Lime stone

• Quartzite