Building Materials, Third Edition
22 VU
- Match List-I with List-II and select the correct answer using the codes given below the
lists:
List-I List-II
(Type of Rock) (Formation process)
A. Dolomite 1. Action of earth movements
B. Shale 2. Precipitation of salts
C. Sandstone 3. Deterioration of magmatic rocks
- Accumulation of plants and animal remains
Codes:
(a)ABC (b)ABC
234 241
(c)ABC (b)ABC
143 243
- Granite, after metamorphism transforms to
(a) quartzite (b) gneiss
(c) schist (d) slate
- Dolomite after metamorphism changes to
(a) marble (b) quartzite
(c) slate (d) phyallite
- Marble is a
(a) stratified rock (b) unstratified rock
(c) foliated rock (d) argillaceous rock
- The most suitable explosive used under water is
(a) dynamite (b) gun powder
(c) gun cotton (d) rock-a-rock
- The most suitable explosive used in construction of tunnels is
(a) dynamite (b) cordite
(c) gelignite (d) lithofacteor
- Which of the following is not a tool used for dressing stones?
(a) Mallet (b) Mason's hammer
(c) Crow chisel (d) Jumper
20 Which of following stones has least % water absorption by volume?
(a) Trap (b) Slate
(c) Quartzite (d) Limestone
- Which of the following stone has maximum % water absorption by volume?
(a) Shale (b) Granite
(c) Slate (d) Quartzite
- Trap is a
(a) argillaceous rock (b) silicious rock
(c) calcarious rock (d) stratified rock
- A rough estimate of the quantity (A) of dynamite required in grams for blasting rocks is
give by
(a) L^2 /0.008 (b) L2/3/340
(c) L^2 /500 (d) none of the above
where L is the length of line of least resistance.
