MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 2242 Mcqs, each offering curated multiple-choice questions to sharpen your Php knowledge and support exam preparation. Choose a topic below to get started.
| 1101. |
The major problem associated with sample preparation is which of the following? |
| A. | Preparing sample in the right quantity |
| B. | Choosing sample holders |
| C. | Matrix effects |
| D. | Reflection by holders |
| Answer» D. Reflection by holders | |
| 1102. |
Which of the following happens when a large solid angle is intercepted as the detector is placed close to the sample? |
| A. | Maximum efficiency increases |
| B. | Maximum efficiency decreases |
| C. | Efficiency is not affected |
| D. | Process response becomes fast |
| Answer» B. Maximum efficiency decreases | |
| 1103. |
Which of the following devices are used as a detector? |
| A. | Thermistor |
| B. | Optical detector |
| C. | Solid state detector |
| D. | Golay cell |
| Answer» D. Golay cell | |
| 1104. |
In total reflection X-ray fluorescence spectrometer, the specimen is excited by the primary X-ray beam at a grazing angle _______ the critical angle. |
| A. | Greater than |
| B. | Less than |
| C. | Equal to |
| D. | Which is a complement of |
| Answer» C. Equal to | |
| 1105. |
In conjugation of HFr cell with F– cell the recipient ______________ |
| A. | Stays F– |
| B. | Become F+ |
| C. | Become HFr |
| D. | Become F’ |
| Answer» B. Become F+ | |
| 1106. |
What genetic information (DNA) does an F-plasmid contain? |
| A. | does an F-plasmid contain?a) Chromosomal DNA |
| B. | Non-chromosomal DNA with regulatory genes |
| C. | DNA that codes for proteins to produce pili |
| D. | B and C |
| Answer» E. | |
| 1107. |
What is the unidirectional transfer of genetic material from the donor to the recipient is termed? |
| A. | Conjugation |
| B. | Recombination |
| C. | Transduction |
| D. | Transformation |
| Answer» B. Recombination | |
| 1108. |
Conjugation between F+ and F– cell results in _______________ |
| A. | Two F– cells |
| B. | F–cell becomes F+ |
| C. | F– cell remains F– cell with a little DNA from F+ cell |
| D. | Remains the same without any change |
| Answer» C. F– cell remains F– cell with a little DNA from F+ cell | |
| 1109. |
What is the order of the gene where columns are for different HFR and values denote time? |
| A. | Azi, Lac, Gal, Ton |
| B. | Lac, Gal, Azi, Ton |
| C. | Gal, Lac, Ton, Azi |
| D. | Tob, Azi, Lac, Gal |
| Answer» C. Gal, Lac, Ton, Azi | |
| 1110. |
In conjugation of F+ cell and F– cell the recipient will be F–. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1111. |
Which one of the following gets transferred during Hfr conjugation? |
| A. | F factor |
| B. | F- factor |
| C. | Donor DNA |
| D. | Donor plasmid |
| Answer» D. Donor plasmid | |
| 1112. |
Which one of the following do not have a self-transmissible plasmid? |
| A. | E. colli |
| B. | Streptococcus |
| C. | Bacillus |
| D. | Enterococcus |
| Answer» B. Streptococcus | |
| 1113. |
Conjugation can’t take place between ___________ |
| A. | F- and F+ |
| B. | F’ and F- |
| C. | HFR and F- |
| D. | HFR and F+ |
| Answer» E. | |
| 1114. |
Sex pilus is not required for plasmid transfer. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1115. |
Who releases the plasmid encoded proteins required for adhering. |
| A. | Donor cell |
| B. | Recipient cell |
| C. | F+ cell |
| D. | F- cell |
| Answer» B. Recipient cell | |
| 1116. |
Which of the following made it easier to conclude that physical contact of the cells was necessary for conjugation in Davis experiment? |
| A. | Filter |
| B. | U – tube |
| C. | Separate medium for different strains of bacterium |
| D. | Distant species of bacterium |
| Answer» B. U – tube | |
| 1117. |
Which one of the following is true? |
| A. | The F plasmid encodes the factor which is transferred from one cell to another |
| B. | The factor encoded by the F plasmid is called as Filamentous (F) factor |
| C. | It is transferred from one cell to another by filament |
| D. | The bacteria must belong to the same species to carry out the conjugation |
| Answer» B. The factor encoded by the F plasmid is called as Filamentous (F) factor | |
| 1118. |
By whose experiment conjugation was proved? |
| A. | Robert Hook |
| B. | Bernard Davis |
| C. | Thomas Bill and Jimmy Bill |
| D. | Joshua Lederberg and Edward Tatum |
| Answer» C. Thomas Bill and Jimmy Bill | |
| 1119. |
By whose experiment evidence of the existence of conjugation was established? |
| A. | Robert Hook |
| B. | Albert Einstein |
| C. | Thomas Bill and Jimmy Bill |
| D. | Joshua Lederberg and Edward Tatum |
| Answer» E. | |
| 1120. |
Nerve fibers are __________ |
| A. | Nuclear processes |
| B. | Protoplasmic processes |
| C. | Endoplasmic process |
| D. | Cytoplasmic processes |
| Answer» E. | |
| 1121. |
Which of the following cranial nerves does not contain preganglionic parasympathetic fibers? |
| A. | Optic II |
| B. | Glossopharyngeal IX |
| C. | Facial VII |
| D. | Oculomotor III |
| Answer» B. Glossopharyngeal IX | |
| 1122. |
Which of the following is true about parasympathetic neurons? |
| A. | The nerve fibers are contained in spinal nerves |
| B. | The synapse in terminal ganglia either next to or within the organs innervated |
| C. | They originate in thoracic and lumbar regions of the spinal cord |
| D. | Postganglionic fibers are usually longer than those of sympathetic neurons |
| Answer» C. They originate in thoracic and lumbar regions of the spinal cord | |
| 1123. |
Which of the following is released by Parasympathetic nervous system? |
| A. | Serotonin |
| B. | Acetylcholine |
| C. | Epinephrine |
| D. | Nor epinephrine |
| Answer» C. Epinephrine | |
| 1124. |
Targets of the autonomic nervous system include all of the following except __________ |
| A. | Cardiac muscle |
| B. | Endocrine glands |
| C. | Skeletal muscle |
| D. | Exocrine glands |
| Answer» D. Exocrine glands | |
| 1125. |
The brain area that most directly controls the activity of the autonomic nervous system is the __________ |
| A. | Pituitary gland |
| B. | Medulla oblongata |
| C. | Cerebellum |
| D. | Hypothalamus |
| Answer» C. Cerebellum | |
| 1126. |
Catecholamine is derived from __________ |
| A. | Acetylcholine |
| B. | Tyrosine |
| C. | Tryptophan |
| D. | Epinephrine |
| Answer» C. Tryptophan | |
| 1127. |
Autonomic nervous system affects ______ |
| A. | Reflex actions |
| B. | Sensory organs |
| C. | Visceral organs |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 1128. |
PCBs are classified by the U.S. EPA as _______ carcinogens. |
| A. | A1 |
| B. | A2 |
| C. | B1 |
| D. | B2 |
| Answer» E. | |
| 1129. |
Chronic PCBs exposure has been associated with _______ |
| A. | Dizziness |
| B. | Low birth rate |
| C. | Acneiform eruption |
| D. | Chloracne |
| Answer» C. Acneiform eruption | |
| 1130. |
Acute high dose exposure to PCBs resulted in ________ |
| A. | Dizziness |
| B. | Ataxia |
| C. | Acneiform eruption |
| D. | Chloracne |
| Answer» E. | |
| 1131. |
What is the PCB route of exposure for children? |
| A. | Breast milk |
| B. | Air |
| C. | Water |
| D. | Soil |
| Answer» B. Air | |
| 1132. |
Pyrolysis of PCBs and chlorinated benzene at high temperatures produced PCDFs. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1133. |
When did US Congress ban use of PCBs? |
| A. | 1980 |
| B. | 1978 |
| C. | 1982 |
| D. | 1983 |
| Answer» C. 1982 | |
| 1134. |
The economical concrete silos shape is ____________ |
| A. | Paraboloid shell shape |
| B. | Ellipse shell shape |
| C. | Circle shell shape |
| D. | Dome shell shape |
| Answer» B. Ellipse shell shape | |
| 1135. |
The thickness of concrete in the shell is in the range of ____________ |
| A. | 60-70mm |
| B. | 50-75mm |
| C. | 90-120mm |
| D. | 40-50mm |
| Answer» C. 90-120mm | |
| 1136. |
The prestressed concrete silos are generally preferred for storage of ____________ |
| A. | Blocks |
| B. | Anchors |
| C. | Fertilizers |
| D. | Concrete |
| Answer» D. Concrete | |
| 1137. |
The Narora atomic power plant consists of a ____________ |
| A. | Single containment vessel |
| B. | Triple containment |
| C. | Prestressed containment vessel |
| D. | Double containment vessel |
| Answer» E. | |
| 1138. |
One of the prestressed power reactor vessels in the following. |
| A. | Madras |
| B. | Assam |
| C. | Tripura |
| D. | Jharkhand |
| Answer» B. Assam | |
| 1139. |
The atomic power reactor at Rajasthan was built in which year? |
| A. | 1900 |
| B. | 1935 |
| C. | 1965 |
| D. | 1340 |
| Answer» D. 1340 | |
| 1140. |
The maximum credible accident (MCA) is a ____________ |
| A. | is a ____________a) Nuclear containment structures |
| B. | Explosive container |
| C. | Hydrogen container |
| D. | Mica container |
| Answer» B. Explosive container | |
| 1141. |
One of the nuclear power station located in Tamilnadu shielded by a double containment system is? |
| A. | Lankesh nuclear power station |
| B. | Gauri nuclear power station |
| C. | Kalpakkam nuclear power station |
| D. | Radant nuclear power station |
| Answer» D. Radant nuclear power station | |
| 1142. |
The prestressed concrete structures pressure vessels can be triaxially prestressed resulting in ____________ |
| A. | Reflection |
| B. | High load factors |
| C. | Tensile factors |
| D. | Ductile factors |
| Answer» C. Tensile factors | |
| 1143. |
IF_SET_A_X_B=B_X_A_THEN_WHICH_OF_THE_FOLLOWING_SETS_MAY_SATISFY?$ |
| A. | A={1, 2, 3} , B={1, 2, 3, 4} |
| B. | A={1, 2} , B={2, 1} |
| C. | A={1, 2, 3} , B={2, 3, 4} |
| D. | None of the mentioned |
| Answer» C. A={1, 2, 3} , B={2, 3, 4} | |
| 1144. |
AQUEDUCT_IS_AN_EXAMPLE_OF____________CHANNEL.?$ |
| A. | Natural |
| B. | Prismatic |
| C. | Non prismatic |
| D. | Artificial |
| Answer» E. | |
| 1145. |
DURING_BINARY_FISSION_IN_PARAMECIUM,_THE_REAR_DAUGHTER_CELL_RECEIVES_A_NEW_GULLET??$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 1146. |
CAPE_SLEEVES_COVER_THE_KNEE_OF_THE_WORKER.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 1147. |
NAME_A_PIECE_OF_EQUIPMENT_USED_TO_FIT_A_DAIRY_ANIMAL.?$ |
| A. | clipper |
| B. | towel |
| C. | feather |
| D. | bells |
| Answer» B. towel | |
| 1148. |
WHICH_OF_THE_FOLLOWING_IS_THE_CAUSE_OF_RISING_SLUDGE??$ |
| A. | Sedimentation |
| B. | Denitrification |
| C. | Chlorination |
| D. | Flocculation |
| Answer» C. Chlorination | |
| 1149. |
IF_A_FLUTTER_OR_SINUSOIDAL_WAVE-FORM_PERSISTS_FOR_MORE_THAN______SECONDS_IN_ANY_ECG_CHANNEL,_THEN_THE_MONITOR_ALARMS_FOR_VENTRICULAR_FIBRILLATION.?$ |
| A. | 8 sec |
| B. | 2 sec |
| C. | 4 sec |
| D. | 12 sec |
| Answer» D. 12 sec | |
| 1150. |
WHAT_IS_THE_ELEVATION_OF_A_POINT,_IF_THE_ELEVATION_OF_A_BENCHMARK_IS_200.852_M,_BACK_SIGHT_IS_2.324_M,_FORESIGHT_IS_1.836_M??$ |
| A. | 213.176 |
| B. | 203.176 |
| C. | 211.340 |
| D. | 201.340 |
| Answer» E. | |