Rocks and Stones
Solved Objective Questions (S K Duggal)
1. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Mineral) (Property)
A. Felspar 1. No cleavage
B. Gypsum 2. Hardness
C. Mica 3. Split along one or many directions
D. Limonite 4. Readily soak in water
Codes:
(a)A B C D (b)A B C D
1 4 3 2 1 4 2 3
(c)A B C D (d)A B C D
4 2 3 1 2 4 3 1
Ans. (d) A B C D - 2 4 31
List-I List-II
(Property of Mineral) (Definition/measurement)
A. Hardness 1. Splitting of minerals along
planes parallel to crystal faces
B. Streak 2. Shine on mineral surface
C. Cleavage 3. Mohs scale
D. Lustre 4. Mineral colour in powdered form
Codes:
(a)A B C D (b)A B C D
3 4 2 1 3 4 1 2
(c)A B C D (b)A B C D
1 4 3 2 1 4 2 3.
Ans. (b) A B C D - 3 4 1 2
(a) porphyritic (b) conglomerate
(c) vesicular (d) granular crystalline
Ans. (d)- granular crystalline
(a) silica (b) iron
(c) orthoclase (d) hornblende
Ans. (c)- orthoclase
(a) Sandstone (b) Limestone
(c) Shale (d) Granite
Ans. (d)- Granite
(a) parallel to it (b) normal to it
(c) at 45° to it (d) at 30° to it
Ans. (b)- normal to it
(a) blasting (b) excavating
(c) heating (d) wedging
Ans. (d)- wedging
(a) Quartz (b) Felspar
(c) Garnet (d) Amphibole
Ans. (c)- Garnet
(a) Mica (b) Gypsum
(c) Olivine (d) Serpentine
Ans. (b)- Gypsum
(a) deep-seated plutonic rock (b) hypabassal rock
(c) basic rock (d) acid rock
Ans. (a)- deep-seated plutonic rock
1. It is an ultrabasic rock
2. It contains 45 – 60% silica
3. It is an effusive rick
Of these the correct answer is
(a) 1 only (b) 1 and 2
(c) 1 and 3 (d) 2 and 3
Ans. (c) 1 and 3
(a) Sandstone Igneous rock
(b) Limestone Sedimentary rock
(c) Basalt Metamorphic rock
(d) Granite Argillaceous rock
Ans. (b) Limestone Sedimentary rock
(Mineral) (Property)
A. Felspar 1. No cleavage
B. Gypsum 2. Hardness
C. Mica 3. Split along one or many directions
D. Limonite 4. Readily soak in water
Codes:
(a)A B C D (b)A B C D
1 4 3 2 1 4 2 3
(c)A B C D (d)A B C D
4 2 3 1 2 4 3 1
Ans. (d) A B C D - 2 4 31
2. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Property of Mineral) (Definition/measurement)
A. Hardness 1. Splitting of minerals along
planes parallel to crystal faces
B. Streak 2. Shine on mineral surface
C. Cleavage 3. Mohs scale
D. Lustre 4. Mineral colour in powdered form
Codes:
(a)A B C D (b)A B C D
3 4 2 1 3 4 1 2
(c)A B C D (b)A B C D
1 4 3 2 1 4 2 3.
Ans. (b) A B C D - 3 4 1 2
3. The texture of sandstone is
(a) porphyritic (b) conglomerate
(c) vesicular (d) granular crystalline
Ans. (d)- granular crystalline
4. In rock masses reduction in strength occurs due to the presence of relatively large quantities of
(a) silica (b) iron
(c) orthoclase (d) hornblende
Ans. (c)- orthoclase
5. Which of the following is unstratified?
(a) Sandstone (b) Limestone
(c) Shale (d) Granite
Ans. (d)- Granite
6. Stone is placed along its natural bed so that the applied load is
(a) parallel to it (b) normal to it
(c) at 45° to it (d) at 30° to it
Ans. (b)- normal to it
7. Marble is quarried by
(a) blasting (b) excavating
(c) heating (d) wedging
Ans. (d)- wedging
8. Which of the following is the hardest mineral?
(a) Quartz (b) Felspar
(c) Garnet (d) Amphibole
Ans. (c)- Garnet
9. Which of the following is the softest mineral?
(a) Mica (b) Gypsum
(c) Olivine (d) Serpentine
Ans. (b)- Gypsum
10. Syenite is a
(a) deep-seated plutonic rock (b) hypabassal rock
(c) basic rock (d) acid rock
Ans. (a)- deep-seated plutonic rock
11. Consider the following statements with regards to basalt
1. It is an ultrabasic rock
2. It contains 45 – 60% silica
3. It is an effusive rick
Of these the correct answer is
(a) 1 only (b) 1 and 2
(c) 1 and 3 (d) 2 and 3
Ans. (c) 1 and 3
12. Which of the following pairs is correctly matched?
(a) Sandstone Igneous rock
(b) Limestone Sedimentary rock
(c) Basalt Metamorphic rock
(d) Granite Argillaceous rock
Ans. (b) Limestone Sedimentary rock
13. 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
4. Accumulation of plants and animal remains
Codes:
(a)A B C (b)A B C
2 3 4 2 4 1
(c)A B C (d)A B C
1 4 3 2 4 3
Ans. (a)- A B C - 2 4 3
14. Granite, after metamorphism transforms to
(a) quartzite (b) gneiss
(c) schist (d) slate
Ans. (b) gneiss
15. Dolomite after metamorphism changes to
(a) marble (b) quartzite
(c) slate (d) phyallite
Ans. (a)- marble
16. Marble is a
(a) stratified rock (b) unstratified rock
(c) foliated rock (d) argillaceous rock
Ans. (a)- stratified rock
17. The most suitable explosive used under water is
(a) dynamite (b) gun powder
(c) gun cotton (d) rock-a-rock
Ans. (d) rock-a-rock
18. The most suitable explosive used in construction of tunnels is
(a) dynamite (b) cordite
(c) gelignite (d) lithofacteor
Ans. (d) lithofacteor
19. Which of the following is not a tool used for dressing stones?
(a) Mallet (b) Mason's hammer
(c) Crow chisel (d) Jumper
Ans. (c) Crow chisel
20 Which of following stones has least % water absorption by volume?
(a) Trap (b) Slate
(c) Quartzite (d) Limestone
Ans. (b) Slate
21. Which of the following stone has a maximum % water absorption by volume?
(a) Shale (b) Granite
(c) Slate (d) Quartzite
Ans. (a)- Shale
22. Trap is a
(a) argillaceous rock (b) siliceous rock
(c) calcareous rock (d) stratified rock
Ans. (b) siliceous rock
23. A rough estimate of the quantity (A) of dynamite required in grams for blasting rocks is given by
(a) L2/0.008 (b) L2/3/340
(c) L2/500 (d) none of the above
where L is the length of line of least resistance.
Ans. (a)- L2/0.008
24. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Type of Explosive) (Main Ingredient)
A. Gun powder 1. Cotton saturated with nitric acid
B. Blasting cotton 2. Saltpeter and charcole
C. Dynamite 3. Nitroglycerine absorbed in sandy earth
D. Cordite 4. Combination of nitroglycerine
and nitrocellulose
Codes:
(a)A B C D (b)A B C D
3 1 2 4 2 1 4 3
(c)A B C D (d)A B C D
2 1 3 4 2 3 1 4
Ans. (c)- A B C D - 2 1 3 4
25. The sp. gr. of most of the stones lie between
(a) 1.8 to 2.2 (b) 2.5 to 3.0
(c) 3.0 to 3.5 (d) 3.5 to 4.5
Ans. (b) 2.5 to 3.0
26. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Test on stones) (Property)
A. Absorption test 1. Resistance to weathering
B. Attrition test 2. Resistance to abrasion
C. Brard's test 3. Quality
4. Resistance to frost
Codes:
(a)A B C (b)A B C
3 2 1 3 2 4
(c)A B C (b)A B C
1 3 4 4 2 1
Ans. (b)- A B C - 3 2 4
27. The chemical used to protect stones in industrial towns is
(a) Ba (OH)2 (b) CaCl2
(c) H2SO4 (d) caustic alkalis
Ans. (a) Ba(OH)2
28. The most suitable stone for building piers is
(a) granite (b) limestone
(c) sandstone (d) marble
Ans. (a) granite
29. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Type of Structure) (Type of Stone)
A. Breakwater 1. Sandstone (coarse grained)
B. Arches 2. Basalt
C. Road metal 3. Granite
D. Railway ballast 4. Marble
5. Sand stone (fine grained)
Codes:
(a)A B C D (b)A B C D
3 4 2 5 2 4 3 1
(c)A B C D (d)A B C D
1 3 2 5 3 5 2 1
Ans. (d)- A B C D - 3 5 2 1
30. Which of the following artificial stone is made using iron slag?
(a) Imperial stone (b) Garlic stone
(c) Ransom stone (d) Victoria stone
Ans. (b) Garlic stone
31. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
A. Smith test 1. Frost
B. Brard test 2. Durability
C. Hardness test 3. Devil's
D. Attrition test 4. Mohs scale
Codes:
(a)A B C D (b)A B C D
3 1 4 2 2 4 1 3
(c)A B C D (d)A B C D
1 2 4 3 2 1 4 3
Ans. ()- A B C D - 2 1 4 3
32. Which of the following test is used to determine the rate of wear of stones?
(a) Crushing test (b) Abrasion test
(c) Attrition test (d) Impact test
Ans. (c) Attrition test
33. For stones Mohs scale is used to determine
(a) toughness (b) hardness
(c) flakiness index (d) durability
Ans. (b) hardness
34. Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Name of stone) (Use of stone)
A. Granite 1. Ornamental work
B. Marble 2. Ballast
C. Chalk 3. Rough stone work
D. Laterite 4. Manufacture of cement
Codes:
(a)A B C D (b)A B C D
3 1 2 4 2 3 1 4
(c)A B C D (d)A B C D
2 1 4 3 1 4 2 3
Ans. (c)- A B C D- 2 1 4 3
35. Marble is
(a) crystalline lime stone
(b) composed chiefly of silica and alumina
(c) fine grained crystals of feldspar and hornblende
(d) composed of carbonates of lime and magnesia
Ans. (d) composed of carbonates of lime and magnesia
*Self Typed
*Source- Internet, Books, Self-Analysis