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MCQOPTIONS
This section includes 136 Mcqs, each offering curated multiple-choice questions to sharpen your Uncategorized topics knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
In the 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 | |
| 102. |
The cost of the resins used in the ion exchange process is |
| A. | high |
| B. | low |
| C. | moderate |
| D. | depends on water |
| Answer» B. low | |
| 103. |
The initial equipment in the ion exchange process is |
| A. | more |
| B. | less |
| C. | very less |
| D. | very high |
| Answer» B. less | |
| 104. |
7 REVERSE OSMOSIS. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 105. |
Concentrated seawater which is called |
| A. | permeate |
| B. | brine |
| C. | ro water |
| D. | salt water |
| Answer» C. ro water | |
| 106. |
Capacitor blocks after long time. |
| A. | alternating current |
| B. | direct current |
| C. | both alternating and direct current |
| D. | neither alternating nor direct current |
| Answer» C. both alternating and direct current | |
| 107. |
77*10-11 C. What is the voltage across the capacitor? |
| A. | 1v |
| B. | 2v |
| C. | 3v |
| D. | 4v |
| Answer» B. 2v | |
| 108. |
During metastable state, the size of the particle |
| A. | increases |
| B. | decreases |
| C. | won t change |
| D. | not related |
| Answer» B. decreases | |
| 109. |
The upper limit of brine concentration is |
| A. | 1.5 |
| B. | 2 |
| C. | 2.5 |
| D. | 3 |
| Answer» D. 3 | |
| 110. |
When lacUV5 control system is used, addition of IPTG the expression of |
| A. | activates, t7 rna polymerase |
| B. | inactivates, t7 rna polymerase |
| C. | activates, t7 dna polymerase |
| D. | inactivates, t7 dna polymerase |
| Answer» B. inactivates, t7 rna polymerase | |
| 111. |
The hardness in the ion exchange process is reduced to |
| A. | 0-1ppm |
| B. | 0-2ppm |
| C. | 0-3ppm |
| D. | 0-4ppm |
| Answer» C. 0-3ppm | |
| 112. |
Fusion reactions are called |
| A. | thermonuclear |
| B. | thermoduric |
| C. | thermo uric |
| D. | compound reactions |
| Answer» B. thermoduric | |
| 113. |
O + CO2 |
| A. | ch2o + o2 |
| B. | co2 + o2 |
| C. | h + co2 + o2 |
| D. | ch2o + h2o + o2 |
| Answer» B. co2 + o2 | |
| 114. |
The the salt rejection, the better the system is performing. |
| A. | higher |
| B. | lower |
| C. | moderate |
| D. | poor |
| Answer» B. lower | |
| 115. |
Combining of two light nuclei of low mass to produce a heavy nucleus is called |
| A. | nuclear fusion |
| B. | nuclear fission |
| C. | spontaneous fission |
| D. | double beta decay |
| Answer» B. nuclear fission | |
| 116. |
The residual hardness after the treatment of water is about |
| A. | 1 ppm |
| B. | less than 1ppm |
| C. | 2 ppm |
| D. | less than 2pmm |
| Answer» E. | |
| 117. |
To reduce the possibility of knock in C.I. engines, the first elements of fuel and air should have |
| A. | high temperature |
| B. | high density |
| C. | short delay |
| D. | all of the mentioned |
| Answer» E. | |
| 118. |
The residual product discharged by the hydrogen-oxygen cell is |
| A. | hydrogen peroxide |
| B. | alcohol |
| C. | water |
| D. | potassium permanganate |
| Answer» D. potassium permanganate | |
| 119. |
The standard emf of the hydrogen-oxygen fuel cell is |
| A. | 1.23 v |
| B. | 2.54 v |
| C. | 3.96 v |
| D. | 0.58 v |
| Answer» B. 2.54 v | |
| 120. |
Hydrogen gas has self- ignition temperature. |
| A. | very low |
| B. | very high |
| C. | no |
| D. | none of the mentioned |
| Answer» C. no | |
| 121. |
CNG has high auto-ignition temperature of |
| A. | 813k |
| B. | 993k |
| C. | 1163k |
| D. | 1273k |
| Answer» B. 993k | |
| 122. |
The rate of reaction that does not involve gases, is not dependent on |
| A. | pressure |
| B. | temperature |
| C. | concentration |
| D. | catalyst |
| Answer» B. temperature | |
| 123. |
Oil gas is obtaining by the cracking of |
| A. | kerosene oil |
| B. | diesel oil |
| C. | heavy oil |
| D. | gasoline |
| Answer» B. diesel oil | |
| 124. |
In determination of carbon and hydrogen by ultimate analysis, increase in weight of calcium chloride bulb represents |
| A. | weight of water formed |
| B. | weight of carbon dioxide formed |
| C. | carbon |
| D. | hydrogen |
| Answer» B. weight of carbon dioxide formed | |
| 125. |
In ultimate analysis, %hydrogen is given by |
| A. | (increase in weight of cacl2 tube 2 100 / weight of coal sample taken 18) |
| B. | (increase in weight of koh tube 2 100 / weight of coal sample taken 18) |
| C. | (increase in weight of cacl2 tube 4 100 / weight of coal sample taken 18) |
| D. | (increase in weight of koh tube 4 100 / weight of coal sample taken 18) |
| Answer» B. (increase in weight of koh tube 2 100 / weight of coal sample taken 18) | |
| 126. |
Carbon black and hydrogen can be manufactured using |
| A. | natural gas |
| B. | coal gas |
| C. | oil gas |
| D. | water gas |
| Answer» B. coal gas | |
| 127. |
Coal gas is attained from to a process carried out at |
| A. | 300oc |
| B. | 700oc |
| C. | 900oc |
| D. | 1300oc |
| Answer» E. | |
| 128. |
Steels containing more than 5% of one or more alloying elements are known as |
| A. | hsla steels |
| B. | high alloy steels |
| C. | tool and die steels |
| D. | stainless steels |
| Answer» C. tool and die steels | |
| 129. |
The energy content of air hydrogen mixture is than liquid hydrocarbon fuels. |
| A. | lower |
| B. | higher |
| C. | negligible |
| D. | none of the mentioned |
| Answer» B. higher | |
| 130. |
Alloy steels containing 0.05% to 0.15% of alloying elements are called |
| A. | weathering steel |
| B. | stainless steel |
| C. | tool and die steel |
| D. | microalloyed steel |
| Answer» E. | |
| 131. |
In coal, Sulphur is usually present in the extent of |
| A. | 0.5-3% |
| B. | 90-95% |
| C. | 70-75% |
| D. | 80-85% |
| Answer» B. 90-95% | |
| 132. |
The lowest temperature to which the fuel must be preheated so that it starts burning smoothly is called temperature. |
| A. | ignition |
| B. | combustion |
| C. | boiling point of fuel |
| D. | preheating |
| Answer» B. combustion | |
| 133. |
Langmuir isotherm Mathematical relation for that takes place at equilibrium. |
| A. | absorption |
| B. | adsorption |
| C. | both adsorption and absorption |
| D. | none of the mentioned |
| Answer» C. both adsorption and absorption | |
| 134. |
Sulphur content in diesel engine oil should not be more than |
| A. | 10% |
| B. | 5% |
| C. | 1% |
| D. | 0.1% |
| Answer» D. 0.1% | |
| 135. |
The firing order of a six stroke I.C. engine is |
| A. | 1-3-6-5-2-4 |
| B. | 1-4-2-5-6-3 |
| C. | 1-6-2-5-4-3 |
| D. | 1-5-3-4-2-6 |
| Answer» E. | |
| 136. |
Foaming is caused by the formation of |
| A. | acids |
| B. | alcohols |
| C. | oils and alkalis |
| D. | ketones |
| Answer» D. ketones | |