McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering .
| 701. |
The compressive strength of a good Portland cement and standard sand mortar after 3 days of curing should not be less than |
| A. | 7 MN/m2 |
| B. | 11.5 MN/m2 |
| C. | 17.5 MN/m2 |
| D. | 21 MN/m2 |
| Answer» B. 11.5 MN/m2 | |
| 702. |
The compressive strength of second elass bricks should bot be less than |
| A. | 7.5 MN/m2 |
| B. | 9 MN/m2 |
| C. | 10.5 MN/m2 |
| D. | 12 MN/m2 |
| Answer» A. 7.5 MN/m2 | |
| 703. |
The shrinkage of ordinary concrete is about |
| A. | 0.1 to 0.3 mm/m |
| B. | 0.3 to 0.6 mm/m |
| C. | 0.6 to 1.2 mm/m |
| D. | 1.2 to 2.1 mm/m |
| Answer» B. 0.3 to 0.6 mm/m | |
| 704. |
A limestone containing about 30% of alumina and silica is called |
| A. | granular limestone |
| B. | compact limestone |
| C. | magnesium limestone |
| D. | kankar |
| Answer» D. kankar | |
| 705. |
The frog of a brick is normally made on its |
| A. | longer face |
| B. | shorter face |
| C. | bottom face |
| D. | top face |
| Answer» D. top face | |
| 706. |
The normal consistency of Portland cement is about |
| A. | 10% |
| B. | 15% |
| C. | 20% |
| D. | 25% |
| Answer» D. 25% | |
| 707. |
The lime which consists almost entirely of calcium oxide, is called |
| A. | poor lime |
| B. | rich lime |
| C. | hydraulic lime |
| D. | limestone |
| Answer» B. rich lime | |
| 708. |
The commonly used lime for works under water or in damp situations is |
| A. | fat lime |
| B. | lean lime |
| C. | feebly hydraulic lime |
| D. | eminently hydraulic lime |
| Answer» D. eminently hydraulic lime | |
| 709. |
The natural drying of bricks is also called hack drying. |
| A. | True |
| B. | False |
| Answer» A. True | |
| 710. |
The dry process of mixing is usually employed in the manufacture of Portland cement when the raw material is |
| A. | blast furnace slag |
| B. | chalk |
| C. | clay |
| D. | all of these |
| Answer» A. blast furnace slag | |
| 711. |
A good refractory brick should withstand high temperature. It should also have low coefficient of expansion and contraction. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 712. |
The time required for air seasoning of soft wood is |
| A. | 15 to 30 days |
| B. | 30 to 60 days |
| C. | 60 to 90 days |
| D. | 90 to 120 days |
| Answer» C. 60 to 90 days | |
| 713. |
The silicious sandstone which has been subjected to metamorphic action, is called |
| A. | moorum |
| B. | laterite |
| C. | quartzite |
| D. | dolomite |
| Answer» C. quartzite | |
| 714. |
The lime which contains more than 30% of clayey impurities in the form of silica, alumina and iron oxide, is known as |
| A. | poor lime |
| B. | rich lime |
| C. | hydraulic lime |
| D. | limestone |
| Answer» A. poor lime | |
| 715. |
Siliceous rocks have alumina or clay as their major constituent. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 716. |
A good building stone is one which does not absorb more than |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 25% |
| Answer» A. 5% | |
| 717. |
According to Indian standard specifications, the temperature for curing is |
| A. | 5?C |
| B. | 10?C |
| C. | 27?C |
| D. | 42?C |
| Answer» C. 27?C | |
| 718. |
The hydraulic lime which resembles very much with Portland cement in its chemical composition is called. |
| A. | feebly hydraulic lime |
| B. | moderately hydraulic lime |
| C. | eminently hydraulic lime |
| D. | none of these |
| Answer» C. eminently hydraulic lime | |
| 719. |
The initial setting of cement is caused due to |
| A. | di-calcium silicate |
| B. | tri-calcium silicate |
| C. | tri-calcium aluminate |
| D. | tri-calcium alumino ferrite |
| Answer» C. tri-calcium aluminate | |
| 720. |
Which of the following constituent, when present in excess quantity in clay causes the bricks to melt and distort during burning? |
| A. | Alumina |
| B. | Silica |
| C. | Lime |
| D. | Alkalies |
| Answer» C. Lime | |
| 721. |
The drier in an oil paint should not be more than |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» B. 10% | |
| 722. |
The addition of pozzolana to Portland cement causes |
| A. | less heat of hydration |
| B. | increase in shrinkage |
| C. | decrease in permeability |
| D. | all of these |
| Answer» D. all of these | |
| 723. |
The commonly used lime in white washing is |
| A. | quick lime |
| B. | fat lime |
| C. | lean lime |
| D. | hydraulic lime |
| Answer» B. fat lime | |
| 724. |
The greater the percentage of tri-calcium silicate in the cement, the better will be the cement. |
| A. | Correct |
| B. | Incorrect |
| Answer» A. Correct | |
| 725. |
The cementing property in cement is mainly due to |
| A. | lime |
| B. | silica |
| C. | iron oxide |
| D. | alumina |
| Answer» A. lime | |
| 726. |
The vehicle used in bronze paints is usually |
| A. | linseed oil |
| B. | naptha |
| C. | water |
| D. | nitro-cellulose lacquer |
| Answer» D. nitro-cellulose lacquer | |
| 727. |
The base in a paint is added to |
| A. | improve the quality of paint |
| B. | make smooth surface |
| C. | hide the surface to be painted |
| D. | all of these |
| Answer» C. hide the surface to be painted | |
| 728. |
The commonly used extender in a paint is |
| A. | barium sulphate |
| B. | gypsum |
| C. | alcohol |
| D. | any one of these |
| Answer» D. any one of these | |
| 729. |
Argillaceous rocks have their main constituent as |
| A. | carbonates of lime |
| B. | clay or alumina |
| C. | silica or sand |
| D. | all of these |
| Answer» B. clay or alumina | |
| 730. |
The commonly base used in a paint is |
| A. | iron oxide |
| B. | zinc oxide |
| C. | titanium white |
| D. | any one of these |
| Answer» D. any one of these | |
| 731. |
The compressive strength of paving bricks should not be less than |
| A. | 20 MN/m2 |
| B. | 30 MN/m2 |
| C. | 40 MN/m2 |
| D. | 50 MN/m2 |
| Answer» C. 40 MN/m2 | |
| 732. |
Quick lime on reaction with water gives |
| A. | hydraulic lime |
| B. | slaked lime |
| C. | hydrated lime |
| D. | poor lime |
| Answer» B. slaked lime | |
| 733. |
The compressive strength of granite is |
| A. | 50 to 70 MN/m2 |
| B. | 70 to 130 MN/m2 |
| C. | 130 to 170 MN/m2 |
| D. | 170 to 200 MN/m2 |
| Answer» B. 70 to 130 MN/m2 | |
| 734. |
The timber whose thickness is less than 5 cm and the width exceeds 12 cm, is called a |
| A. | board |
| B. | plank |
| C. | batten |
| D. | log |
| Answer» A. board | |
| 735. |
A limestone found in seams of great thickness in non-crystalline texture with earthy appearance, is called |
| A. | granular limestone |
| B. | compact limestone |
| C. | magnesium limestone |
| D. | lankar |
| Answer» B. compact limestone | |
| 736. |
The process of mixing clay, water and other ingredients to make bricks, is known as |
| A. | tempering |
| B. | pugging |
| C. | kneading |
| D. | moulding |
| Answer» C. kneading | |
| 737. |
The compound responsible for the initial setting of cement, is |
| A. | tri-calcium aluminate |
| B. | tetra-calcium alumino ferrite |
| C. | both (a) and (b) |
| D. | none of these |
| Answer» C. both (a) and (b) | |
| 738. |
Eminently hydraulic lime is one in which the percentage of silica, alumina and iron oxide is |
| A. | 5 to 10% |
| B. | 10 to 25% |
| C. | 25 to 30% |
| D. | 30 to 40% |
| Answer» C. 25 to 30% | |
| 739. |
The time required for seasoning of timber in kilm seasoning is |
| A. | 2 to 5 days |
| B. | 5 to 10 days |
| C. | 10 to 20 days |
| D. | 20 to 40 days |
| Answer» C. 10 to 20 days | |
| 740. |
The thin radial fibres extending from the pith to the cambium layer is called medullary rays. |
| A. | Yes |
| B. | No |
| Answer» A. Yes | |
| 741. |
The percentage of alumina in a good brick clay should vary from |
| A. | 20 to 30% |
| B. | 30 to 40% |
| C. | 40 to 50% |
| D. | 50 to 60% |
| Answer» A. 20 to 30% | |
| 742. |
Laterite is chemically classified as |
| A. | caleareous rock |
| B. | argillaceous rock |
| C. | sillcious rock |
| D. | metamorphic rock |
| Answer» B. argillaceous rock | |
| 743. |
The alkaline salt present in the bricks, absorbs moisture from the air which on drying |
| A. | leaves pores and makes the bricks porous |
| B. | leaves high powder deposit on the brick |
| C. | makes the bricks brittle and weak |
| D. | all of these |
| Answer» B. leaves high powder deposit on the brick | |
| 744. |
The shrinkage of concrete |
| A. | does not change |
| B. | increases |
| C. | decreases |
| Answer» B. increases | |
| 745. |
The compressive strength of felspar is |
| A. | equal to |
| B. | less than |
| C. | more than |
| Answer» B. less than | |
| 746. |
The hand made bricks are |
| A. | superior |
| B. | inferior |
| Answer» A. superior | |
| 747. |
The bricks after burning in kilns require about |
| A. | 4 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» D. 12 | |
| 748. |
The average out-turn of first class bricks in clamp burning is about |
| A. | 50% |
| B. | 60% |
| C. | 70% |
| D. | 80% |
| Answer» B. 60% | |
| 749. |
The advantage of adding pozzolana (or surkhi) to lime is to |
| A. | reduce shrinkage |
| B. | increase resistance to cracking |
| C. | increase resistance to chemical attack |
| D. | all of these |
| Answer» D. all of these | |
| 750. |
An assembled product made up of veneers and adhesives is called |
| A. | board |
| B. | plank |
| C. | plywood |
| D. | batten |
| Answer» C. plywood | |
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