MCQOPTIONS
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MCQOPTIONS
This section includes 292 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
In which State 'Rani ki Vav' stepwell located? |
| A. | Haryana |
| B. | Rajasthan |
| C. | Gujarat |
| D. | Punjab |
| Answer» D. Punjab | |
| 202. |
An artesian spring is formed |
| A. | When an aquiclude gets exposed in a valley against a vertical cut |
| B. | Due to the presence of a continuous fault in a rock |
| C. | When a porous strata gets confined between two impervious strata |
| D. | None of the above |
| Answer» D. None of the above | |
| 203. |
Decrease in per capita consumption of water is observed in the _____. |
| A. | hotter climate |
| B. | good quality water |
| C. | modern living |
| D. | metering system |
| Answer» E. | |
| 204. |
_____ valve is used to remove the entire water within a pipe after closing the supply. |
| A. | Sluice |
| B. | Scour |
| C. | Reflux |
| D. | Air |
| Answer» C. Reflux | |
| 205. |
Consider the following statements:1. The Accelerated Irrigation Benefits Programme was launched during 1996-97 to provide loan assistance to poor farmers.2. The Command Area Development Programme was launched in 1974-75 for the development of water-use efficiency.Which of the statements given above is/are correct? |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» B. 2 only | |
| 206. |
A small sized curved pipe made of flexible material, about 75 cm in length and forming a flexible connection between water min and the service pipe is called a: |
| A. | ferrule |
| B. | goose neck |
| C. | water meter |
| D. | stop cock |
| E. | bib cock |
| Answer» C. water meter | |
| 207. |
According to Indian standards, the consumption of water per capita per day for nursing homes, boarding schools and hostels in |
| A. | 85 liters |
| B. | 100 liters |
| C. | 115 liters |
| D. | 135 liters |
| Answer» E. | |
| 208. |
For old town and cities that have been irregularly developed, which distribution system is suitable? |
| A. | Dead-end system |
| B. | Gridiron system |
| C. | Ring system |
| D. | Radial system |
| Answer» B. Gridiron system | |
| 209. |
As per IS 1172-1971, the domestic water consumption under normal conditions in an Indian city is |
| A. | 135 lpcd |
| B. | 150 lpcd |
| C. | 165 lpcd |
| D. | 200 lpcd |
| Answer» B. 150 lpcd | |
| 210. |
Population levels over 5 decades of a small town are given below.YearPopulation19602,50,00019702,80,00019803,40,00019904,20,00020004,90,000 The population of the town in the year 2020 estimated by Arithmetic Increase method will be |
| A. | 5,10,000 |
| B. | 5,90,000 |
| C. | 6,10,000 |
| D. | 6,90,000 |
| Answer» D. 6,90,000 | |
| 211. |
Fire hydrants are usually fitted in the water mains about _____ apart. |
| A. | 50-60 m |
| B. | 25-40 m |
| C. | 150-200 m |
| D. | 100 -150 m |
| E. | 160-200 m |
| Answer» E. 160-200 m | |
| 212. |
The chemical oxygen demand can be given as __________ |
| A. | {[(V1-V2)*N*8]}/x |
| B. | {[(V1+V2)*N*8]}/x |
| C. | {[(V2-V1)*N*8]}/x |
| D. | {[(V1/V2)*N*8]}/x |
| Answer» B. {[(V1+V2)*N*8]}/x | |
| 213. |
Which of the following method is not the method of desalination? |
| A. | Reverse osmosis |
| B. | Multi flash distillation |
| C. | Electro dialysis |
| D. | Smelting |
| Answer» E. | |
| 214. |
In determination of hardness by EDTA method, 50ml of standard hard water required 30ml of EDTA solution while 50ml of sample hard water consumed 20ml of EDTA solution. After boiling 50ml of same sample required 10ml of EDTA solution. Calculate the permanent hardness. |
| A. | 322ppm |
| B. | 332ppm |
| C. | 664ppm |
| D. | 644ppm |
| Answer» C. 664ppm | |
| 215. |
In biological oxidation process, depending on the organic load, the oxidation takes place ___________ |
| A. | 1-4Hours |
| B. | 4-8Hours |
| C. | 8-16Hours |
| D. | 16-20Hours |
| Answer» C. 8-16Hours | |
| 216. |
The hardness of the water in the zeolite process can be treated at the range of __________ |
| A. | 5-10ppm |
| B. | 5-15ppm |
| C. | 5-20ppm |
| D. | 5-25ppm |
| Answer» C. 5-20ppm | |
| 217. |
How many types of absorbed impurities in water are there mainly? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 218. |
In anaerobic treatment the organic acid and alcohol is undergone into ___________ process. |
| A. | Sedimentation |
| B. | Screening |
| C. | Catalysis |
| D. | Fermentation |
| Answer» E. | |
| 219. |
Variation of hardness of raw water in zeolite process _________ |
| A. | Do not affects the exchange process |
| B. | Affects the exchange process |
| C. | Slightly affects the exchange process |
| D. | Some times affects the exchange process |
| Answer» B. Affects the exchange process | |
| 220. |
The regeneration of acids and alkalis in ion exchange process is __________ |
| A. | Cheaper |
| B. | Costlier |
| C. | Time taking |
| D. | Hard process |
| Answer» C. Time taking | |
| 221. |
In case of the zeolites, ion exchange process do not function properly because of the __________ |
| A. | Turbidity |
| B. | Suspended matter |
| C. | Turbidity and suspended matter |
| D. | Neither turbidity nor suspended matter |
| Answer» D. Neither turbidity nor suspended matter | |
| 222. |
COD values are always _________ BOD. |
| A. | Less than |
| B. | Higher than |
| C. | Equal |
| D. | Nearly equal |
| Answer» C. Equal | |
| 223. |
One French unit is equal to __________ ppm. |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» B. 20 | |
| 224. |
Lime soda process does not involve steps. |
| A. | True |
| B. | False |
| Answer» C. | |
| 225. |
Reacting the water with _________ removes the odour due to the phenols. |
| A. | KMnO4 |
| B. | MnO4 |
| C. | Potassium |
| D. | Magnesium |
| Answer» B. MnO4 | |
| 226. |
__________ should be free of turbidity as they interfering in exchange process. |
| A. | Raw water |
| B. | Hard water |
| C. | Very hard water |
| D. | Soft water |
| Answer» B. Hard water | |
| 227. |
The unpleasant odour of the water is due to presence of the __________ |
| A. | Nitrogen |
| B. | Bismuth |
| C. | Phenols |
| D. | Dissolved oxygen |
| Answer» D. Dissolved oxygen | |
| 228. |
The change in colour is sharper at the PH of ________ |
| A. | 5 |
| B. | 10 |
| C. | 15 |
| D. | 20 |
| Answer» C. 15 | |
| 229. |
By aerobic process _________ of biodegradable water is converted into the biomass. |
| A. | 0.1 |
| B. | 0.3 |
| C. | 0.5 |
| D. | 0.75 |
| Answer» D. 0.75 | |
| 230. |
Surface water appears turbid due to presence of the __________ which remains suspended in the water. |
| A. | Impurities |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Water plants |
| Answer» B. Oxygen | |
| 231. |
How many steps are involved in the zeolite process? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» E. | |
| 232. |
If a sample water has not supplied any heat and having impurities as follows: Mg(HCO3)2=50 mg of CaCO3, MgSO4= 100mg of CaCO3 , CaCl2=200mg of CaCO3, Ca(NO3)2=100mg of CaCO3. Calculate the lime required for treatment of 10000 litres of water. |
| A. | 1.82Kg |
| B. | 1.50Kg |
| C. | 1.45Kg |
| D. | 1.48Kg |
| Answer» E. | |
| 233. |
Which of the following does not cause the permanent hardness in water? |
| A. | Nitrates |
| B. | Sulphates |
| C. | Chlorides |
| D. | Bicarbonates |
| Answer» E. | |
| 234. |
The phosphate is about the range of __________ in drinking water. |
| A. | 5-10ppm |
| B. | 10-15ppm |
| C. | 15-20ppm |
| D. | 20-25ppm |
| Answer» C. 15-20ppm | |
| 235. |
Domestic water treatment is carried out under __________ conditions. |
| A. | Aerobic |
| B. | Anaerobic |
| C. | Cannot be known |
| D. | Depends on the pollution level of water |
| Answer» B. Anaerobic | |
| 236. |
The organic matter have the limit in water that is about __________ |
| A. | 0.2 to 1 |
| B. | 0.5 to 1 |
| C. | 1 to 2 |
| D. | 2 to 4 |
| Answer» B. 0.5 to 1 | |
| 237. |
The semi permeable membranes used in the reverse osmosis is _________ |
| A. | Cellulose |
| B. | Glucose |
| C. | Cellulose acetate |
| D. | Glucose acetate |
| Answer» D. Glucose acetate | |
| 238. |
Determination of flow increase is used for the monitoring of ___________ |
| A. | sea pollution |
| B. | River pollution |
| C. | Lake pollution |
| D. | Tank pollution |
| Answer» C. Lake pollution | |
| 239. |
Increase in the BOD value in the water indicates ___________ |
| A. | Decrease in pollution |
| B. | Increase in pollution |
| C. | Pollution is independent of BOD |
| D. | Slight decrease in the BOD |
| Answer» C. Pollution is independent of BOD | |
| 240. |
The amount of coagulate if added in the hot lime soda process is __________ |
| A. | High |
| B. | Low |
| C. | Very high |
| D. | Very low |
| Answer» E. | |
| 241. |
The colour of dye metal complex and dye are ___________ |
| A. | Same |
| B. | Different |
| C. | Same in only some cases |
| D. | Cannot be known |
| Answer» C. Same in only some cases | |
| 242. |
COD can be determined in ___________ |
| A. | 1Hours |
| B. | 2Hours |
| C. | 3Hours |
| D. | 4Hours |
| Answer» D. 4Hours | |
| 243. |
The very hard water has the hardness of CaCO3 is given by ___________ |
| A. | 100-200ppm |
| B. | 100-300ppm |
| C. | 200-300ppm |
| D. | Above 300ppm |
| Answer» D. Above 300ppm | |
| 244. |
At PH=10, the metal dye complex has the colour________ |
| A. | Wine red |
| B. | Blue |
| C. | Green |
| D. | Pink |
| Answer» B. Blue | |
| 245. |
The quantity of water available for the actual use is _________ |
| A. | 0.1 |
| B. | 0.05 |
| C. | 0.005 |
| D. | 0.01 |
| Answer» D. 0.01 | |
| 246. |
Ion exchange process is also called as ___________ |
| A. | Permutit's process |
| B. | Demineralization |
| C. | Zeolite process |
| D. | Lime soda process |
| Answer» C. Zeolite process | |
| 247. |
The suspended impurities is negligible due to the filtering action of __________ |
| A. | Water plants |
| B. | Dissolved impurities |
| C. | Soil |
| D. | Dissolved gases |
| Answer» D. Dissolved gases | |
| 248. |
Mostly pollution of rivers takes place by discharge sewage. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 249. |
Very low hardness of __________ can be achieved in the zeolite process. |
| A. | 3ppm |
| B. | 4ppm |
| C. | 5ppm |
| D. | Less than 5ppm |
| Answer» E. | |
| 250. |
In dissolved mineral salts, ___________ gets converted into the bicarbonates by the action of carbondioxide by water. |
| A. | Carbonate of calcium |
| B. | Carbonates of magnesium |
| C. | Carbonates of calcium and magnesium |
| D. | Neither carbonates of calcium nor magnesium |
| Answer» D. Neither carbonates of calcium nor magnesium | |