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MCQOPTIONS
This section includes 2171 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1301. |
A construction joint is provided where |
| A. | bending moment is small |
| B. | shear force is small |
| C. | the member is supported by other member |
| D. | all the above. |
| Answer» E. | |
| 1302. |
If the effective plan area of a warehouse is 54 sq. m, and maximum height of piles permitted is 270 cm, the number of cement bags to be stored, is |
| A. | 2000 bags |
| B. | 2200 bags |
| C. | 2400 bags |
| D. | 2700 bags |
| Answer» E. | |
| 1303. |
For the construction of cement con-certe dams, the maximum permissible size of the aggregates, is |
| A. | 40 mm |
| B. | 50 mm |
| C. | 60 mm |
| D. | 70 mm |
| Answer» B. 50 mm | |
| 1304. |
The shuttering of a hall measuring 4 m x 5 m, can be removed after |
| A. | 5 days |
| B. | 7 days |
| C. | 10 days |
| D. | 14 days |
| Answer» C. 10 days | |
| 1305. |
If the engineer-in-charge approves, the 10 cm cubes may be used for the work test of concrete provided maximum nominal size of aggregate, does not exceed |
| A. | 10 cm |
| B. | 15 cm |
| C. | 20 cm |
| D. | 25 cm |
| Answer» D. 25 cm | |
| 1306. |
Gypsum is added for |
| A. | colour |
| B. | strength |
| C. | controlling setting time |
| D. | none of these. |
| Answer» D. none of these. | |
| 1307. |
The top diameter, bottom diameter and the height of a slump mould are : |
| A. | 10 cm, 20 cm, 30 cm |
| B. | 10 cm, 30 cm, 20 cm |
| C. | 20 cm, 10 cm, 30 cm |
| D. | 20 cm, 30 cm, 10 cm |
| Answer» B. 10 cm, 30 cm, 20 cm | |
| 1308. |
Sand requiring a high water cement ratio, belongs to |
| A. | Zone I |
| B. | Zone II |
| C. | Zone III |
| D. | Zone IV. |
| Answer» B. Zone II | |
| 1309. |
The strength and quality of concrete, depend upon: |
| A. | grading of aggregates |
| B. | surface area of aggregates |
| C. | shape of aggregates |
| D. | all the above. |
| Answer» E. | |
| 1310. |
1.S.I. has specified the full strength of concrete after |
| A. | 7 days |
| B. | 14 days |
| C. | 21 days |
| D. | 28 days |
| Answer» E. | |
| 1311. |
If the slump of a concrete mix is 60 mm, its workability is |
| A. | very low |
| B. | low |
| C. | medium |
| D. | high |
| Answer» D. high | |
| 1312. |
Expansion joints are provided if the length of concrete structures exceeds |
| A. | 10 m |
| B. | 15 m |
| C. | 15 m |
| D. | 45 m |
| Answer» E. | |
| 1313. |
If 50 kg of fine aggregates and 100 kg of coarse agregates are mixed in a concrete whose water cement ratio is 0.6, the weight of water required for harsh mix, is |
| A. | 8 kg |
| B. | 10 kg |
| C. | 12 kg |
| D. | 14 kg |
| Answer» D. 14 kg | |
| 1314. |
Curing of pavements, floors, roofs and slabs, is done by |
| A. | membrane method |
| B. | ponding method |
| C. | covering surface with bags |
| D. | sprinkling water method |
| Answer» C. covering surface with bags | |
| 1315. |
Di-calcium silicate (C₂S) |
| A. | hydrates rapidly |
| B. | generates less heat of hydration |
| C. | hardens rapidly |
| D. | provides less ultimate strength to cement |
| Answer» C. hardens rapidly | |
| 1316. |
The impurity of mixing water which affects the setting time and strength of concrete, is |
| A. | sodium sulphates |
| B. | sodium chlorides |
| C. | sodium carbonates and bicarbonates |
| D. | calcium chorides |
| Answer» D. calcium chorides | |
| 1317. |
An ideal ware house, is provided |
| A. | water proof masonry walls |
| B. | water proof roof |
| C. | few windows which remain generally closed |
| D. | all the above. |
| Answer» E. | |
| 1318. |
Permissible compressive strength of M 200 concrete grade is |
| A. | 100 kg/cm² |
| B. | 150 kg/cm² |
| C. | 200 kg/cm² |
| D. | 250 kg/cm² |
| Answer» D. 250 kg/cm² | |
| 1319. |
An aggregate is known as cyclopean aggregate if its size is more than |
| A. | 4.75 mm |
| B. | 30 mm |
| C. | 60 mm |
| D. | 75 mm |
| Answer» E. | |
| 1320. |
Allowable shear strength of concrete, depends upon |
| A. | shear strength |
| B. | tensile strength |
| C. | compressive strength |
| D. | none of these. |
| Answer» B. tensile strength | |
| 1321. |
The cement becomes useless if its absorbed moisture content exceeds |
| A. | 1% |
| B. | 2% |
| C. | 3% |
| D. | 5% |
| Answer» E. | |
| 1322. |
The lower water cement ratio in concrete, introduces |
| A. | smaller creep and shrinkage |
| B. | greater density and smaller permeability |
| C. | improved frost resistance |
| D. | all the above. |
| Answer» E. | |
| 1323. |
An aggregate which passes through 25 mm I.S. sieve and is retained on 20 mm sieve, is said to be flaky if its least dimension is less than |
| A. | 22.5 mm |
| B. | 18.5 mm |
| C. | 16.5 mm |
| D. | 13.5 mm. |
| Answer» E. | |
| 1324. |
Strength of concrete with passage of time |
| A. | increases |
| B. | decreases |
| C. | fluctuates |
| D. | remains constant. |
| Answer» B. decreases | |
| 1325. |
Workability of concrete mix with low water cement ratio is determined by |
| A. | tensile strength test |
| B. | slump test |
| C. | compaction factor test |
| D. | flexural strength test |
| Answer» D. flexural strength test | |
| 1326. |
For construction of structures in sea water, the cement generally preferred to, is |
| A. | Portland-pozzolana cement |
| B. | quick setting cement |
| C. | low heat Portland cement |
| D. | rapid hardening cement |
| Answer» B. quick setting cement | |
| 1327. |
Ordinary concrete is not used for concrete grade |
| A. | M 100 |
| B. | M 150 |
| C. | M 200 |
| D. | M 400 |
| Answer» E. | |
| 1328. |
Slump test of concrete is a meausre ofits |
| A. | consistency |
| B. | compressive strength |
| C. | tensile strength |
| D. | impact value. |
| Answer» B. compressive strength | |
| 1329. |
Concrete containing |
| A. | silicious aggregates, has higher co-efficient of expansion |
| B. | igneous aggregates, has intermediate coefficient of expansion |
| C. | lime stones, has lowest co-efficient of expansion |
| D. | All the above. |
| Answer» E. | |
| 1330. |
The aggregate containing moisture in pores and having its suface dry, is known as |
| A. | moist aggregates |
| B. | very dry aggregates |
| C. | dry aggregates |
| D. | saturated surface dry aggregate |
| Answer» E. | |
| 1331. |
If the effective working time is 7 hours and per batch time of concrete is 3 minutes, the output of a concrete mixer of 150 litre capacity, is |
| A. | 15, 900 litres |
| B. | 16, 900 litres |
| C. | 17, 900 litres |
| D. | 18, 900 litres |
| Answer» E. | |
| 1332. |
Water cement ratio is generally expressed in volume of water required per |
| A. | 10 kg |
| B. | 20 kg |
| C. | 30 kg |
| D. | 50 kg |
| Answer» E. | |
| 1333. |
The bulk density of aggregates, depends upon |
| A. | shape |
| B. | grading |
| C. | compaction |
| D. | all the above. |
| Answer» E. | |
| 1334. |
Higher workability of concrete is required if the structure is |
| A. | made with cement concrete |
| B. | thick and reinfored |
| C. | thin and heavily reinforced |
| D. | thick and heavily reinfored. |
| Answer» E. | |
| 1335. |
Pozzolana cement is used with confidence for construction of |
| A. | dams |
| B. | massive foundations |
| C. | abutments |
| D. | all the above. |
| Answer» E. | |
| 1336. |
The grade of concrete M 150 means that compressive strength of a 15 cm cube after 28 days, is |
| A. | 100 kg/cm² |
| B. | 150 kg/cm² |
| C. | 200 kg/cm² |
| D. | 250 kg/cm² |
| Answer» C. 200 kg/cm² | |
| 1337. |
The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be |
| A. | between 150 to 300 kg/cm² |
| B. | between 350 to 600 kg/cm² |
| C. | between 150 to 500 kg/cm² |
| D. | below 200 kg/cm² |
| Answer» E. | |
| 1338. |
Separation of coarse aggregates from mortar during transportation, is known |
| A. | bleeding |
| B. | creeping |
| C. | segregation |
| D. | shrinkage |
| Answer» D. shrinkage | |
| 1339. |
'Ware house pack' of cement means |
| A. | full capacity of the ware house |
| B. | pressure exertion of the bags of upper layers |
| C. | pressure compaction of the bags on lower layers |
| D. | packing the ware house |
| Answer» D. packing the ware house | |
| 1340. |
Concrete is unsuitable for compaction by a vibrator if it is |
| A. | dry |
| B. | earth moist |
| C. | semi-plastic |
| D. | plastic |
| Answer» E. | |
| 1341. |
The concrete mix which causes difficulty in obtaining a smooth finish, possess |
| A. | segregation |
| B. | internal friction |
| C. | hardness |
| D. | bleeding |
| Answer» D. bleeding | |
| 1342. |
Slump test of concrete is a measure ofits |
| A. | consistency |
| B. | compressive strength |
| C. | tensile strength |
| D. | impact value. |
| Answer» B. compressive strength | |
| 1343. |
Water required per bag of cement, is |
| A. | 7 kg |
| B. | 14 kg |
| C. | 21 kg |
| D. | 35 kg |
| Answer» E. | |
| 1344. |
For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is |
| A. | 10 kg |
| B. | 12 kg |
| C. | 14 kg |
| D. | 16 kg |
| Answer» D. 16 kg | |
| 1345. |
Separation of water or water sand cement from a freshly concrete, is known |
| A. | bleeding |
| B. | creeping |
| C. | segregation |
| D. | flooding |
| Answer» B. creeping | |
| 1346. |
The dimensions of a 35 litre forma for measuring aggregates by volume, are : |
| A. | length 30 cm, breadth 25 cm, height 30 cm |
| B. | length 39 cm, breadth 25 cm, height 32 cm |
| C. | length 27 cm, breadth 27 cm, height 48 cm |
| D. | length 220 cm, breadth 25 cm, height 40 cm |
| Answer» D. length 220 cm, breadth 25 cm, height 40 cm | |
| 1347. |
The process of hardening the concrete by keeping its surface moist is known |
| A. | placing |
| B. | wetting |
| C. | curing |
| D. | compacting |
| Answer» D. compacting | |
| 1348. |
If fineness modulus of sand is 2.5, it is graded as |
| A. | very fine sand |
| B. | fine sand |
| C. | medium sand |
| D. | coarse sand |
| Answer» C. medium sand | |
| 1349. |
An ordinary Portland cement when tested for its fineness, should not leave any residue on I.S. seive No. 9, more than |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» C. 15% | |
| 1350. |
The final operation of finishing floors, is known as |
| A. | screeding |
| B. | floating |
| C. | trowelling |
| D. | finishing |
| Answer» D. finishing | |