MCQOPTIONS
Saved Bookmarks
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.
| 51. |
The calorific value of LPG is |
| A. | 34800kcal/m3 |
| B. | 84000kcal/m3 |
| C. | 278000kcal/m3 |
| D. | 29000kcal/m3 |
| Answer» D. 29000kcal/m3 | |
| 52. |
To calculate HCV of the fuel, the products of combustion are cooled down to |
| A. | 600f |
| B. | 700f |
| C. | 400f |
| D. | 200f |
| Answer» B. 700f | |
| 53. |
The Bomb calorimeter is used to determine the calorific value of |
| A. | solids and liquid fuels |
| B. | solid and gaseous fuels |
| C. | liquid fuels that can be easily vaporized |
| D. | solid fuels only |
| Answer» B. solid and gaseous fuels | |
| 54. |
The reaction rate is greatly influenced by |
| A. | nature of bond in the reactant molecules |
| B. | strength of bond in the reactant molecules |
| C. | both nature and strength of the reactant molecules |
| D. | it does not depend on either nature or strength of the reactant molecules |
| Answer» D. it does not depend on either nature or strength of the reactant molecules | |
| 55. |
A is a biocatalyst that increases the rate of the reaction without being changed. |
| A. | aluminum oxide |
| B. | silicon dioxide |
| C. | enzyme |
| D. | hydrogen peroxide |
| Answer» D. hydrogen peroxide | |
| 56. |
Removal of gaseous impurities like methane, ethane, propane and butane from gasoline is called as |
| A. | stabilization of gasoline |
| B. | sweetening of gasoline |
| C. | doping of gasoline |
| D. | blending of gasoline |
| Answer» B. sweetening of gasoline | |
| 57. |
A fertile material is the one, that can be |
| A. | converted into fissile material on absorption of neutron |
| B. | fissioned by either slow or fast neutrons |
| C. | fissioned by slow (thermal) neutrons |
| D. | fissioned by fast neutrons |
| Answer» B. fissioned by either slow or fast neutrons | |
| 58. |
Good quality of coal should have % of oxygen. |
| A. | low |
| B. | high |
| C. | 100 |
| D. | 0 |
| Answer» B. high | |
| 59. |
moderator is used in a fast breeder reactor. |
| A. | heavy water |
| B. | graphite |
| C. | no |
| D. | beryllium |
| Answer» D. beryllium | |
| 60. |
Acetylene and synthesis gas are examples of |
| A. | primary gaseous fuels |
| B. | gaseous fuels |
| C. | secondary gaseous fuels |
| D. | liquid fuels |
| Answer» D. liquid fuels | |
| 61. |
In order to prevent knock in the S.I. engines, the charge away from the spark plug should have |
| A. | low temperature |
| B. | low density |
| C. | rich mixture |
| D. | all of the mentioned |
| Answer» E. | |
| 62. |
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 6 |
| Answer» D. 6 | |
| 63. |
The tac promoter is made by region of trp promoter and region of the lacUV5 promoter. |
| A. | 10, 35 |
| B. | 35, 10 |
| C. | 10, 10 |
| D. | 35, 35 |
| Answer» C. 10, 10 | |
| 64. |
Choose the correct statement, detonation can be controlled by |
| A. | varying compression ratio |
| B. | using lean mixture |
| C. | retarding the spark timing |
| D. | reducing the r.p.m |
| Answer» D. reducing the r.p.m | |
| 65. |
If a reaction is nth order the half-life period of the initial concentration of the reactants. |
| A. | is independent |
| B. | varies inversely as (n-1)th power |
| C. | varies inversely as nth power |
| D. | varies directly as (n-1)th power |
| Answer» C. varies inversely as nth power | |
| 66. |
HHW stands for |
| A. | high and low water |
| B. | high level waste |
| C. | heated low level water |
| D. | high and low waste |
| Answer» C. heated low level water | |
| 67. |
Electrodialysis is an electrically driven separation conducted at a very low pressure- driven, size-exclusion filtering process. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 68. |
In thermogravimetric analysis, the result obtained appear as a |
| A. | continuous chart |
| B. | continuous parabola |
| C. | continuous circular positions |
| D. | discontinuous chart |
| Answer» B. continuous parabola | |
| 69. |
RO membranes are made of |
| A. | plastic |
| B. | cotton |
| C. | silk |
| D. | polymer |
| Answer» E. | |
| 70. |
Solar radiation received at any point of earth is called |
| A. | insolation |
| B. | beam radiation |
| C. | diffuse radiation |
| D. | infrared rays |
| Answer» B. beam radiation | |
| 71. |
Solar radiation which reaches the surface without scattering or absorbed is called |
| A. | beam radiation |
| B. | infrared radiation |
| C. | ultraviolet radiation |
| D. | diffuse radiation |
| Answer» B. infrared radiation | |
| 72. |
Percentage of ash by analysis of coal is given by |
| A. | (weight of residue/weight of sample) 100 |
| B. | (weight of sample weight of residue) 100 |
| C. | (weight of sample weight of residue)/weight of sample 100 |
| D. | (weight of residue weight of sample) 100 |
| Answer» B. (weight of sample weight of residue) 100 | |
| 73. |
A solar cell is a |
| A. | p-type semiconductor |
| B. | n-type semiconductor |
| C. | intrinsic semiconductor |
| D. | p-n junction |
| Answer» E. | |
| 74. |
In ion exchange process, the cation exchange resin is generated by passing |
| A. | acids |
| B. | dilute acids |
| C. | alkalis |
| D. | dilute alkalis |
| Answer» C. alkalis | |
| 75. |
The scattered solar radiation is called |
| A. | direct radiation |
| B. | beam radiation |
| C. | diffuse radiation |
| D. | infrared radiation |
| Answer» D. infrared radiation | |
| 76. |
The elementary processes with molecularity greater than are not known. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» D. 0 | |
| 77. |
Thermal analysis is defined as |
| A. | measurement of concentration of materials as a function of temperature |
| B. | measurement of solubility of materials as a function of temperature |
| C. | measurement of physical properties as a function of temperature |
| D. | measurement of line positions of crystals as a function of temperature |
| Answer» D. measurement of line positions of crystals as a function of temperature | |
| 78. |
Most of the energy released in fission process is in process of |
| A. | kinetic energy |
| B. | thermal energy |
| C. | light energy |
| D. | heat energy |
| Answer» B. thermal energy | |
| 79. |
The continuous supply of soft water can be provided by having |
| A. | storage facilities |
| B. | required amount of ppm |
| C. | high pressure boilers |
| D. | 1ppm |
| Answer» B. required amount of ppm | |
| 80. |
Ion exchange process is also called as |
| A. | permutit s process |
| B. | demineralization |
| C. | zeolite process |
| D. | lime soda process |
| Answer» C. zeolite process | |
| 81. |
Ethyl alcohol reduces the |
| A. | oxygen emissions |
| B. | efficiency |
| C. | polluting emissions |
| D. | nitrogen emissions |
| Answer» D. nitrogen emissions | |
| 82. |
Alcohol can absorb |
| A. | traces of water |
| B. | traces of impurities |
| C. | traces of dust |
| D. | traces of carbon |
| Answer» B. traces of impurities | |
| 83. |
Main source of is monazite sand. |
| A. | uranium |
| B. | polonium |
| C. | halfnium |
| D. | thorium |
| Answer» E. | |
| 84. |
Main disadvantage of the power alcohol is |
| A. | starting troubles |
| B. | more cost |
| C. | increases foreign currency |
| D. | increases octane number of petrol |
| Answer» B. more cost | |
| 85. |
The efficiency of I.C. engines normally is of the order of |
| A. | 15-20% |
| B. | 20-25% |
| C. | 25-30% |
| D. | 30-35% |
| Answer» E. | |
| 86. |
Power alcohol is than petrol. |
| A. | bad product |
| B. | less efficient |
| C. | costlier |
| D. | cheaper |
| Answer» E. | |
| 87. |
The mineral free water is not used in |
| A. | pharmaceuticals |
| B. | cosmetics |
| C. | explosives |
| D. | drinking |
| Answer» E. | |
| 88. |
The ion-exchange membrane are electrically conductive and are not permeable to flow, even under pressure. |
| A. | electron |
| B. | oil |
| C. | fluorine |
| D. | water |
| Answer» E. | |
| 89. |
of zeolite. |
| A. | 10,000 |
| B. | 20,000-30,000 |
| C. | 35,000-40,000 |
| D. | 40,000-50,000 |
| Answer» D. 40,000-50,000 | |
| 90. |
Power alcohols contains |
| A. | 50-60% of petrol |
| B. | 70-80% of petrol |
| C. | 50-60% of ethanol |
| D. | 70-80% of ethanol |
| Answer» C. 50-60% of ethanol | |
| 91. |
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 | |
| 92. |
The total are removed completely in the ion exchange process. |
| A. | dissolved gases |
| B. | dissolved solids |
| C. | dissolved solvents |
| D. | dissolved other impurities |
| Answer» C. dissolved solvents | |
| 93. |
Natural zeolite is mainly processed from |
| A. | white sand |
| B. | green sand |
| C. | grey sand |
| D. | red sand |
| Answer» C. grey sand | |
| 94. |
Under conditions of heating, decomposition usually take place in thermogravimetry. Fill up the suitable option from the choices given below. |
| A. | first order |
| B. | second order |
| C. | third order |
| D. | dynamic |
| Answer» E. | |
| 95. |
The operational cost of the ion exchange process is |
| A. | high |
| B. | low |
| C. | very high |
| D. | very low |
| Answer» C. very high | |
| 96. |
Natural gas contains |
| A. | methane=70-90% |
| B. | benzene=40-30% |
| C. | hydrogen=50% |
| D. | methane=80-40% |
| Answer» B. benzene=40-30% | |
| 97. |
Water softened during method will be ideal in boilers. |
| A. | zeolite method |
| B. | lime soda method |
| C. | demineralisation method |
| D. | permutit s process |
| Answer» C. demineralisation method | |
| 98. |
During the collection of e-h pairs, holes are collected by |
| A. | front contact |
| B. | back contact |
| C. | si-wafer |
| D. | finger electrodes |
| Answer» C. si-wafer | |
| 99. |
and suitable catalyst are required to promote high rate of electrode processes. |
| A. | lower temperature |
| B. | higher temperature |
| C. | moderate temperature |
| D. | very low temperature |
| Answer» C. moderate temperature | |
| 100. |
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 | |