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Doctors Medicines MCQs Q&A

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A 18-year-old patient presented with hypertension and recurrent weakness of all four limbs. His serum Na+ 140 mmol/L, serum K+ 2.6 mmol/L, serum HC03" 30 mmol/L. Probable cause/s is/are
A serum bottle is filled with 4 parts of water and 5 parts of serum. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half serum?
If controlled inactivation of a gene is carried out and some of the consequences when inactivation of a target gene is deleterious are avoided. It is referred as ____________
Which of the following refers to the inactivation of Insertional inactivation?
A Carnot heat engine receives heat at 750 K and rejects the waste heat to the environment at 300 K. The net work output of the heat engine is used to drive a Carnot refrigerator, whose COP is 6.14. If the heat removal rate from the refrigerated space is 6.6 kW, determine the rate of heat supply to the heat engine?
Consider the following statements regarding heat waves in India.  I. Heat waves mostly occur over Rajasthan, Punjab and Haryana towards the end of April but they mainly take place in May.  II. Any heat wave lasts for around 4-5 days.  III. If there is an increase in temperature by 6-7 degrees Celsius above normal, that is known as the Moderate Heat Wave whereas if it is 8 degree Celsius or more, that is known as Severe heat wave.  Which among the above statements is/are correct regarding the heat waves?
Consider the following statement: a) In a refrigerator the heat is taken out from the system. b) In a refrigerator the heat is given to the system. c) In a heat pump the heat is taken out from the system. d) In a heat pump the heat is given to the system. Which of the above statements are correct?
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow and k = Thermal conductivity of the body)
In a pharmaceutical shop, there is a conical-shaped container, open at the top. Its depth is 8 cm and the diameter is 10 cm. It is fully filled with medical serum. When spherical capsule tablets of radius 0.5 cm are dropped into the container, 1/4 of the serum flows out. Find the number of capsules dropped in the container.