The sedimentary rocks are formed due to? Mark as favorite Copy Link solidification of molten mass lying below or above the earth surface gradual deposition of materials like sand, clay, etc., generally by setting water alteration of original structure under heat and excessive pressure none of the above Check Answer
The wood generally used for railway sleepers is? Mark as favorite Copy Link mango kail babul deodar Check Answer
For railway ballast, the stone should be? Mark as favorite Copy Link soft with a uniform texture hard, heavy, strong and durable hard, tough, resistant to abrasion and durable hard, dense, durable, tough and easily workable Check Answer
The alkaline salt present in the bricks, absorbs moisture from the air which on drying? Mark as favorite Copy Link leaves pores and makes the bricks porous leaves high powder deposit on the brick makes the bricks brittle and weak all of these Check Answer
The percentage of silica in a good brick clay should vary from? Mark as favorite Copy Link 20 to 30% 30 to 40% 40 to 50% 50 to 60% Check Answer
The lime which consists almost entirely of calcium oxide, is called? Mark as favorite Copy Link poor lime rich lime hydraulic lime limestone Check Answer
The dressing of stone is done? Mark as favorite Copy Link immediately after quarrying after seasoning after three months of quarrying just before building Check Answer
The advantage of adding pozzolana (or surkhi) to lime is to? Mark as favorite Copy Link reduce shrinkage increase resistance to cracking increase resistance to chemical attack all of these Check Answer
Which of the following statements is wrong? Mark as favorite Copy Link clay or alumina A stone with large percentage of quartz is very soft Felspar is a silicate of aluminium with varying amounts of potash, soda or lime Quartz has a greasy lustre Check Answer
The setting and hardening of cement paste is mainly due to the hydration and hydrolysis of? Mark as favorite Copy Link tri-calcium silicate di-calcium silicate tri-calcium aluminate all of these Check Answer