The commonly used thinner in oil paints, is

The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted …

The thermosetting plastic

The slenderness ratio for masonry walls should not be more than

Pick up the correct statement from the following:

Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as

Bitumen is generally obtained from

Number of bricks required for one cubic metre of brick masonry is

Which of the following represents a metamorphic rock?<br> (i) Slate<br> (ii) Shale<br> (iii) Quartzite