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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The wave velocity of ultrasound in soft tissues is 1540m/s and the impedance offered by it is 1.63 X 106 kg/m^2s. What is the density of the soft tissue?(a) 0.1058441 kg/m^3(b) 10.58441 kg/m^3(c) 1058.441kg/m^3(d) 105844.1 kg/m^3 |
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Answer» Correct choice is (c) 1058.441kg/m^3 Explanation: The impedance is given by z = ρc where z = impedance, ρ = density and c = velocity of the ultrasound. Since the wave velocity and the impedance offered are given, ρ = z/c. This results in 1058.441 kg/m^3 of density for the soft tissue. |
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| 2. |
What is the purpose of CSSD?(a) storage of clean equipment(b) providing sterile equipment to the operation theater(c) storing sterile equipment(d) pharmacy of the operation theater |
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Answer» Correct option is (b) providing sterile equipment to the operation theater Easiest explanation: CSSD stands for Central Sterile & Supply Department. All the equipment that is used in the hospital, especially surgeries, is kept in this store. The area is responsible for disinfecting all the equipment and preparing it for use again and keeping the disinfected instruments in a sterile environment. |
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| 3. |
The following is an image of a curvilinear probe. What is best imaged with a curvilinear probe?(a) superficial structures and vessels(b) transabdominal imaging(c) cardiac imaging(d) transvaginal and transrectal imaging |
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Answer» The correct option is (b) transabdominal imaging For explanation I would say: The curve of the curvilinear probe increases the footprint i.e. the depth and surface area for imaging along with low frequency. Thus, it is used for taking the images of the abdomen. To take an image of the superficial structures and vessels, a linear probe is used as it can produce high frequency waves. Phase array probes are used for cardiac ultrasound as it can image between the ribs and endocavity probes are used for transrectal and transvaginal imaging. |
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| 4. |
What is the term used for portable EEG?(a) Travel EEG(b) Ambulatory EEG(c) Personalized EEG(d) Transport EEG |
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Answer» Right option is (b) Ambulatory EEG Explanation: Ambulatory EEG is the one in which a person wears an EEG cap where the receiving electrodes are placed. The machine is strapped to the waist of the person and a continuous monitoring of the EEG can be done. This is useful for those who need long monitoring for diagnosis and treatment. This provides portability and comfort to the patient. |
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| 5. |
Sleep spindles are found __________ of the sleep.(a) first phase(b) second phase(c) third phase(d) fourth phase |
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Answer» The correct choice is (b) second phase To elaborate: Sleep spindles are found in the second stage of sleep. According to sleep sciences, consciousness is classified by Rapid Eye movement (REM), Non – Rapid Eye Movement (NREM) and wakefulness. NREM is the stage of proper deep sleep and the sleep spindles along with Kappa Waves are observed in this period. |
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| 6. |
Abnormal sleep spindles can indicate _______(a) Cerebral Palsy(b) Meningitis(c) Epilepsy(d) Paralysis |
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Answer» Right option is (c) Epilepsy Explanation: Scientists over long research have a reason to believe that sleep spindles are a way for the brain to convert short term memory into long term and therefore enhance learning. Often times, when the body does minute physical movement, sleep spindles are also generated. So, it is said that the body is learning in sleep. Thus, when sleep spindles of epileptic patients are seen, they show an abnormal trend. |
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| 7. |
Anxiolytics are used to treat: a) Neurosis b) Psychosis c) Narcolepsy d) Bipolar disorders |
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Answer» Anxiolytics are used to treat Neurosis. |
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| 8. |
When an abdominal ultrasound is done, why is it advised to have a full bladder?(a) To have a good acoustic window(b) To increase the water content(c) To lower impedance(d) To allow for better propagation of waves |
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Answer» Correct choice is (a) To have a good acoustic window Best explanation: Acoustic window is a small opening through which the sound waves can pass and can help image the structures beyond. When the bladder is full, it is properly stretched and the folds of the bladder do not provide any impedance. The water helps in the better propagation of the sound and visualization of the structures beyond the bladder. |
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| 9. |
The following diagram is that of a femur bone. The connecting bone between the ball of the femur and the shaft of the femur has a small bend. What is its significance?(a) It helps in weight bearing(b) For balance(c) For providing better attachment of the ball to the socket(d) No specific reason |
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Answer» The correct choice is (a) It helps in weight bearing The best I can explain: The bend helps in better weight bearing. When an implant is being made, the angle of the bend is also calculated. |
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| 10. |
What does the red dot on the probe help within the produced image?(a) To check if the correct probe was used(b) To check the probe orientation(c) To check the depth of the probe that was used(d) To check the plane of the image. |
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Answer» Right option is (b) To check the probe orientation Explanation: When the probe is being used, it can move in various ways but the image being formed is a horizontal image. Thus, the red dot at the head of the probe appears to the left of the image and helps in working out the orientation of the organ or the foetus. |
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| 11. |
Mr. A met with an accident and his right femur broke at 3 different places. The cut was a clean break and the four pieces were put back together in their original place. What kind of fracture did he have?(a) Contusion(b) Hairline Fracture(c) Multiple Fracture(d) Simple Fracture |
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Answer» The correct option is (c) Multiple Fracture For explanation I would say: When a bone breaks at many places but the break is clean and can be put together in its original place or if many bones break together, then these two kinds of fractures are called multiple fractures. In a compound fracture, the bones break into tiny pieces and that too very close together. It is not possible to fit them in their original places so the bones are removed. In Mr. A’s case, a simple support rod along with placing the bones in their original place should help his leg recover. |
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| 12. |
Extraction of a small section of diseased tissue to study and diagnose is called ______(a) autopsy(b) biopsy(c) necrosis(d) endoscopy |
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Answer» Right choice is (b) biopsy To elaborate: A cell is the smallest individually functioning unit of a body. Thus, when a body is diseased, all the cells of the diseases tissues shows a similar kind of response and reactions. Thus, a small part of the diseased tissue is extracted which is used to study and analyze the problem. This is called a biopsy. |
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| 13. |
Narcolepsy is a condition in which a person has excessive sleepiness during daytime as they are unable to regulate their sleep cycle. It’s a neurological disorder and can be traced with the help of an EEG. What kind of EEG can be expected in this kind of disorder?(a) Alpha waves with short bursts of Beta waves(b) Alpha Waves with short burst of Gamma waves(c) Alpha Waves with short bursts of sleep spindles(d) Continuous alpha waves |
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Answer» Right option is (c) Alpha Waves with short bursts of sleep spindles To explain I would say: The brain normally gives alpha waves while deep sleep produces sleep spindles. When a person is suffering from narcolepsy they will have a deep burst of sleep which causes the sleep spindles to occur. Thus the presence of sleep spindles in the period of wakefulness can indicate narcolepsy. |
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| 14. |
The frequency of the waves acquired when the person is in an alert and wakeful state is _______(a) 4 – 8 Hz(b) 8 – 13 Hz(c) 13 – 30 Hz(d) > 30 Hz |
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Answer» Correct answer is (c) 13 – 30 Hz Explanation: When a person is alert and properly awake, the waves obtained are beta waves. These waves range from 13 – 20 Hz. The alpha waves (8 – 13 Hz) are obtained when a person is asleep. Theta waves (4 – 8 Hz) are found when the person is sitting idle or in children. Sometimes, these waves are generated when the person is about to fall asleep. Gamma waves (> 30 Hz) are found when a person is doing an intense mental activity or is multitasking. |
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| 15. |
Which of these fractures necessitates the use of bone cement or some other implant?(a) Multiple Fractures(b) Compound Fracture(c) Simple Fracture(d) Hairline Fracture |
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Answer» Right option is (b) Compound Fracture The explanation is: In a compound fracture, the bone is broken in multiple pieces at the same place. The pieces are so small that it is not possible to put them back together. In such cases, the fractured bone pieces are removed and a plate/implant along with bone cement is used. Depending upon the area affected, the plate and bone cement may be temporary, i.e. the bone is able to grow back or permanent, i.e. the bone will not grow back. |
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| 16. |
What is the ideal time interval for patient monitoring in the Postanesthesia care unit?(a) Every hour(b) Every 15 mins(c) Every 30 mins(d) Every 10 mins |
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Answer» The correct answer is (b) Every 15 mins For explanation: Usually the patient remains in PACU for 60-90 minutes after surgery depending upon patient response. Vitals like heart rate, body temperature, oxygen levels, ensuring airways need to be constantly monitored in the immediate post-op period. |
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| 17. |
Spinal Anaesthesia used on a patient needs monitoring for ________(a) Oxygen levels(b) Hyper tension(c) Renal Function(d) Brain activity |
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Answer» Right answer is (c) Renal Function To elaborate: All the toxins and the administered medicines are removed by the kidney. Thus, when anesthesia is given in the spine, it is usually a local anesthesia and numbs the lower part of the body. Since the lower part of the body had been anesthetized, kidney which is also supplied to by these nerves may also be affected thus monitoring renal function becomes important. |
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| 18. |
Why is the stomach lavage done?(a) to remove poison(b) to induce vomiting(c) to allow better respiration(d) to hydrate the stomach |
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Answer» Correct answer is (a) to remove poison The explanation: Lavage is the term that is used for washing. Thus, stomach lavage means washing the stomach. When a person has been poisoned or has had an excess intake of alcohol or is preparing for a surgery, the stomach is cleaned out. Vomiting is a side effect of stomach lavage. |
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| 19. |
Which of the following ultrasound techniques gives the best Ultrasound Image of the heart?(a) 2D phased array(b) Linear phased array(c) Transesophageal(d) Curvilinear array |
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Answer» Right option is (c) Transesophageal Explanation: This type of ultrasound is taken by inserting an endoscope with the transducer down the esophagus. The endoscope gets an unobstructed view of the heart through the esophagus and the ultrasound of the heart can be taken. It is difficult to take the ultrasound of the heart due to the ribs blocking the beams. To take the ultrasound through the chest, the acoustic window is too small and only specific angles can be taken. Transesophagal method is an invasive method to take the ultrasound of the heart. |
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| 20. |
In the below diagram, the red line cuts the body in which section?(a) Sagittal(b) Coronal(c) Horizontal(d) Para Sagittal |
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Answer» Right option is (a) Sagittal The explanation: The plane that cuts the body in equal right and left parts are called the sagittal section. The right and the left parts of the plane are called the para sagittal planes/sections of the body. If the body is cut in such a way that the superior and inferior parts are seen, it is a horizontal cut. If the body is sliced in such a way that the anterior and posterior parts are seen, then its the coronal plane. |
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| 21. |
High refractoriness of a material refers to its __________(a) Slipperyness of the material(b) Chemical strength towards other material(c) Strength to withstand at high temperature(d) Ability to get dissolved in molten metal |
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Answer» The correct option is (c) Strength to withstand at high temperature To explain: Refractoriness is the resistance to self deformation at high working temperatures. A material must possess such property in order to withstand the temperature of molten metal during casting. |
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| 22. |
Endoscopic imaging uses ___________(a) thermal sensors(b) chemical sensors(c) optic fiber sensors(d) pressure sensors |
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Answer» Correct answer is (c) optic fiber sensors The explanation: Optic sensors are used for endoscopic imaging. Optical fibre sensors are non-electrical and hence are free from electrical interference usually associated with electronically based sensors. They are suitable for telemetry applications as the bulk of the instrumentation can be at a reasonable distance from the patient. |
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| 23. |
How is monitoring done for stomach wash?(a) Air insufflation while listening to the stomach(b) Auscultation(c) Patting the stomach(d) Ultrasound |
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Answer» Correct choice is (a) Air insufflation while listening to the stomach To explain I would say: Air insufflation is the process in which air is filled in the cavity and then the cavity is monitored. For stomach wash, the abdominal area is filled with air and then the stomach sounds are heard. This ensures that the tube is in the correct place. |
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| 24. |
Which of the following is an important component for any bone related implant?(a) Titanium(b) Iron(c) Calcium and Phosphorus(d) Calcium Hydroxyapatite |
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Answer» Correct option is (d) Calcium Hydroxyapatite For explanation I would say: Calcium Hydroxyapatite is a biomaterial which had properties closest to that of the human bone. It is found in shells of animals and can also be manufactured in labs. Whenever an implant regarding bones is manufactured, they are coated with calcium hydroxyapatite to allow better integration of the implant with the bone and reduce immuno-rejection. |
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| 25. |
The pump used to pump air mechanically into the respiratory tract __________(a) Mechanical Pump(b) Ventilator(c) Ambulatory Bag(d) CPR |
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Answer» Correct answer is (c) Ambulatory Bag Easy explanation: An ambulatory bag has a mouth piece which is placed in the mouth of the patient and a rubber bulb which is used to pump air. It is a self-inflating bag and so it keeps getting air. Once the bulb is compressed, the air is sent back to the patient in their respiratory tract. |
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| 26. |
There are \( n \) infinite metal plates arranged parallel to each other as shown. \( Q_{1}, Q_{2}, Q_{3} \ldots \ldots . Q_{n} \) are respective charges on these plates. Charge \( Q \) on the left surface of leftmost plate in the arrangement is |
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Answer» ans. (Q1+Q2+Q3+......+Qn)/2
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| 27. |
Which of the following is not the advantage of using the permanent mould casting method?(a) Mould can be used again and again(b) Good thermal conductivity of mould(c) Very complex shapes of casting can be produced(d) Low cost process |
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Answer» Correct answer is (c) Very complex shapes of casting can be produced To explain I would say: In permanent mould casting method, a metallic mould is used which can be used again and again, and it has good thermal conductivity too. But this method is not appropriate for producing very complex shapes of castings. For complex shapes casting, the investment casting method is mainly preferred which can produce high extent of complexities in the casting components. |
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| 28. |
The movement of an esophagus to help the food down the GI tract __________(a) Mastication(b) Emulsification(c) Peristalses(d) Ejection |
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Answer» The correct option is (c) Peristalses For explanation: After chewing, the tongue rolls the food in the form of a bolus and shifts the food to the oesophagus. The walls of the esophagus contract and relax and slowly allow the food to move down and enter the stomach. This allows the food to enter the stomach slowly and avoid and acid splash. This movement is peristalsis. |
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| 29. |
Which another method can be used to look in the compete for GI tract?(a) Endoscopy(b) Capsule Endoscopy(c) Colonoscopy(d) Laryngoscopy |
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Answer» The correct choice is (b) Capsule Endoscopy To explain I would say: Capsule Endoscopy can help look into the whole of the GI tract. The capsule has a miniature camera. The capsule is swallowed and as it moves down the track, it images the track. The images are either transmitted or stored and later recovered. |
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| 30. |
Which if the following diagnostic procedures require an endoscope?(a) Transesophagal Echocardiography(b) X Ray of the Chest(c) Counting the Number of Platelets(d) Detecting Leukemia |
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Answer» Correct option is (a) Transesophagal Echocardiography For explanation I would say: This is a type of Ultrasound of the heart where the endoscope is sending through the oral cavity and placed close to the heart via the oesophagus. This helps in taking an unhindered ultrasound of the heart. |
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| 31. |
Which endoscope can be used to look at the knees before and after a surgery?(a) Colonoscopy(b) Arthroscopy(c) Bronchoscopy(d) Laryngoscopy |
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Answer» The correct choice is (b) Arthroscopy The best explanation: Arthroscopy is a process where the bones are visualized and worked upon with the help of an endoscope. The soft parts of the knee like the cartilage or the synovial capsule cannot be properly visualized with an X-Ray so an arthroscope is used to look at them. The healing of the bones after a surgery can be monitored by the arthrocope. Small operations regarding the bones can be performed with the help of the arthroscope. |
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| 32. |
Cores are baked up to what temperature?(a) 600°F(b) 650°F(c) 700°F(d) 750°F |
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Answer» Correct choice is (b) 650°F The best I can explain: Before the beginning of the process, the cores need to be taken to a decently good amount of temperature by preheating them. While baking the cores, the cores are taken up to a temperature as high as 650°F. |
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| 33. |
What does the following figure represent?(a) Sand slinger(b) Core extrusion machine(c) Pattern and core prints(d) Core blowing machine |
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Answer» The correct choice is (c) Pattern and core prints To explain: The following figure represents pattern and core prints. These core prints make up core seats when they are put into the sand for making mold. |
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| 34. |
Which of the following hammers is also called a steam hammer?(a) Board hammer(b) Air-lift hammer(c) Power drop hammer(d) Nail hammer |
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Answer» Right choice is (c) Power drop hammer Best explanation: None. |
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| 35. |
What is the capacity of a light manual welding machine?(a) 100 to 200A(b) 300 to 400A(c) 500 to 700A(d) 800 to 3000A |
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Answer» Correct option is (a) 100 to 200A For explanation I would say: A light manual welding machine has one of the lowest capacity among all types of welding machines. Its capacity ranges in between 100 to 200A. This machine is portable and is best suited for light welding processes. |
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| 36. |
Which of the following hammers is also called a gravity hammer?(a) Board hammer(b) Air-lift hammer(c) Power drop hammer(d) Nail hammer |
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Answer» Correct option is (a) Board hammer The explanation is: Among the following type of drop hammers, that is, board hammer, air-lift hammer, power drop hammer and nail hammer, board hammer is also called a gravity hammer. |
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| 37. |
Low dissolved oxygen concentrations leads to(a) Low biomass yields(b) High biomass yields(c) Equal biomass compositions(d) No effect on biomass yields |
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Answer» The correct answer is (a) Low biomass yields The explanation: Water with high concentrations of dissolved minerals such as salt will have a lower DO concentration than fresh water at the same temperature. Low dissolved oxygen (DO) primarily results from excessive algae growth caused by phosphorus. As the algae die and decompose, the process consumes dissolved oxygen. |
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| 38. |
Which of the following cooling systems is used in injection moulding process to increase solidification rate of components made?(a) Air jet cooling system(b) Water cooling system(c) Cooling with free convection(d) Cooling with fins |
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Answer» The correct choice is (b) Water cooling system Explanation: The cooling system is made by including some passages in the mould walls that are usually connected to an external pump. Cool water is circulated through the passages to extract heat from the hot polymers or plastics components made in the injection moulding process. This cooling system increases the solidification rate which basically reduces the production time. |
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| 39. |
Endoscope used to examine the upper GI tract is ___________(a) Laparoscopy(b) Bronchoscopy(c) Esophagogastroduodenoscopy(d) Laryngoscopy |
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Answer» Right choice is (c) Esophagogastroduodenoscopy For explanation I would say: As the name suggests, this particular endoscope has a really long range and can be used to view esophagus, stomach and the duodenum. The region till here is mostly considered as the upper GI tract. |
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| 40. |
x-rays are filtered out of human body by using A. cadmium absorbers B. carbon absorbers C. copper absorbers D. aluminum absorbers |
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Answer» D. aluminum absorbers |
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| 41. |
After preparation of cores, cores on the core plates are sent for what?(a) Pressurizing(b) Baking(c) Increasing the volume(d) Decreasing the volume |
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Answer» Correct answer is (b) Baking The best I can explain: Baking is a process that takes place after quite a lot of preliminary operations. After the cores are prepared, the cores are then placed on the plates and moved forward for baking. |
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| 42. |
What is the rate of melting of a low frequency induction furnace per kW rating?(a) 2 – 3 kg/hr(b) 2 – 3.5 kg/hr(c) 3 – 4 kg/hr(d) 3 – 4.5 kg/hr |
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Answer» Right answer is (b) 2 – 3.5 kg/hr For explanation I would say: The rate of melting of a low frequency induction furnace is around 2 to 3.5 kg per hour per kilo watt rating of the furnace. |
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| 43. |
A parallel plate capacitor formed by square plates of side length / separated by a distance \( d(d<<1) \) is filled with a material whose dielectric constant varies linearly from \( K \) to \( 2 K \) along \( x \). The capacitance of the capacitor with the dielectric medium will be |
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Answer» For a parallel plate capacitor C = \(\cfrac{kɛ_oa}d\) where K = dielectric constant ɛo = permissivity of free space a = area of plate d = distance between the plate C \(\propto\) K \(\cfrac{C_1}{C_2}\) = \(\cfrac{k}{2k}\) = then C1 = \(\cfrac{C_2}2\) |
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| 44. |
Which of the following sand mold contains free water?(a) Green sand mold(b) Dry sand mold(c) Core sand mold(d) Shell mold |
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Answer» Right choice is (a) Green sand mold For explanation I would say: Among the following, green sand mold is found to contain free water. Since it is known to contain some amount of free water, there is some dampness seen in it. |
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| 45. |
Which kind of resistance is experienced in upset butt welding?(a) Electric resistance(b) Magnetic resistance(c) Thermal resistance(d) Air resistance |
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Answer» Correct choice is (a) Electric resistance Best explanation: In the making of an upset butt welding, there are jaws made of copper, into which the part to be welded is put, and hence a solid contact is made. At this point of contact, while the current flows, it gets transformed into heat because of electric resistance. |
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| 46. |
Which of the following materials is mostly used for making of thermoforming moulds?(a) Steel(b) Grey cast iron(c) Aluminium(d) White cast iron |
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Answer» Correct answer is (c) Aluminium To explain: Thermoforming moulds are always made of aluminum because of its light weight, machine ability, and good thermal conductivity. Aluminum moulds may also contain passages through which water can be pumped for cooling of components, which may greatly affect the shrinkage and other features of the components made. |
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| 47. |
Bones look white in x-ray photograph because A. they are bad absorbers of x-rays B. they reflect x-rays C. they are good absorbers of x-raysD. they are bad absorbers of ultraviolet rays |
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Answer» C. they are good absorbers of x-rays |
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| 48. |
Which cores are made manually in hand filled core boxes?(a) Small sized-mass production(b) Small sized-limited production(c) Large sized-mass production(d) Large sized-limited production |
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Answer» Correct answer is (b) Small sized-limited production The best I can explain: Small sized cores are made manually in the hand filled core boxes. For making large sized products for mass production, these cores cannot be employed. |
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| 49. |
Name the material in place of the question mark?(a) Mold cavity(b) Core seat(c) Chaplet(d) Molding sand |
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Answer» The correct choice is (a) Mold cavity Explanation: The material in place of the question mark is a mold cavity. Inside this mold cavity, there some place into which, while operating, the mold is kept. |
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| 50. |
Which of the following is the maximum temperature limit of the electric arc furnaces?(a) 1200 ⁰C(b) 1400 ⁰C(c) 1600 ⁰C(d) 1800 ⁰C |
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Answer» Right option is (d) 1800 ⁰C The best I can explain: The electric arc furnaces can be defined as the furnaces in which charged materials are heated by the application of an electric arc. In general, these furnaces exist in all the sizes, from the smallest to the largest one having capacity of nearly about 400 tons. The electric arc furnaces can achieve temperatures up to 1800 ⁰C. |
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