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- Question
The ratio of various ingredients (cement, sand, aggregates) in concrete of grade M 200, is
Options- A. 1 : 2 : 4
- B. 1 : 3 : 6
- C. 1 :
: 3 - D. 1 : 1 : 2
- E. 4 : 2 : 1
- Correct Answer
- 1 : : 3
- 1. The light weight aggregates are obtained from
Options- A. sedimentary rocks
- B. metamorphic rocks
- C. igneous rocks
- D. volcanic source. Discuss
- 2. Pick up the incorrect statement from the following:
Options- A. The degree of grinding of cement, is called fineness
- B. The process of changing cement paste into hard mass, is known as setting of cement
- C. The phenomenon by virtue of which cement does not allow transmission of sound, is known as soundness of cement
- D. The heat generated during chemical reaction of cement with water, is known as heat of hydration
- E. None of these. Discuss
- 3. The internal dimensions of a ware house are 15 m x 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are
Options- A. 1500 bags
- B. 2000 bags
- C. 2500 bags
- D. 3000 bags
- E. 4000 bags Discuss
- 4. The process of hardening the concrete by keeping its surface moist is known
Options- A. placing
- B. wetting
- C. curing
- D. compacting
- E. none of these. Discuss
- 5. Pick up the incorrect statement from the following:
Options- A. A rich mix of concrete possesses higher strength than that a lean mix of desired workability with excessive equantity of water
- B. The strength of concrete decreases as the water cement ratio increases
- C. If the water cement ratio is less than 0.45, the concrete is not workable and causes honey-combed structure
- D. Good compaction by mechanical vibrtions, increases the strength of concrete
- E. None of these. Discuss
- 6. Permissible compressive strength of M 200 concrete grade is
Options- A. 100 kg/cm2
- B. 150 kg/cm2
- C. 200 kg/cm2
- D. 250 kg/cm2
- E. 300 kg/cm2 Discuss
- 7. Pick up the incorrect statement applicable to the field test of good cement.
Options- A. When one thrusts one's hand into a bag of cement, one should feel warm
- B. The colour of the cement is bluish
- C. A handful of cement thrown into a bucket of water should sink immediately
- D. By rubbing cement in between fingers, one should feed rough
- E. All the above. Discuss
- 8. Pozzolana cement is used with confidence for construction of
Options- A. dams
- B. massive foundations
- C. abutments
- D. R.C.C. structures
- E. all the above. Discuss
- 9. Pick up the correct statement from the following:
Options- A. Sand stones may be divided into calcareous, siliceous and ferrugineous sand stones
- B. Concrete using sand stones, cracks due to excessive shrinkage
- C. Very hard and close grained crystallined lime stones are suitable aggregates but provide low strength
- D. Broken bricks produce a concrete having good fire resisting qualities
- E. All the above. Discuss
- 10. The most useless aggregate is one whose surface texture is
Options- A. smooth
- B. granular
- C. glassy
- D. honey combed and porous. Discuss
Concrete Technology problems
Search Results
Correct Answer: volcanic source.
Correct Answer: The phenomenon by virtue of which cement does not allow transmission of sound, is known as soundness of cement
Correct Answer: 3000 bags
Correct Answer: curing
Correct Answer: A rich mix of concrete possesses higher strength than that a lean mix of desired workability with excessive equantity of water
Correct Answer: 200 kg/cm2
Correct Answer: All the above.
Correct Answer: all the above.
Correct Answer: All the above.
Correct Answer: glassy
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