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Doctors Medicines MCQs Q&A

_________ is aggravated by utilizing liquids at high temperatures where their vapor pressure is high, by utilizing filters with high pressure drops.

_________ is aggravated by utilizing liquids at high temperatures where their vapor pressure is high, by utilizing filters with high pressure drops. Correct Answer Cavitation

The physical process of cavitation inception is similar to that of the boiling. The major difference between the 2 is the thermodynamic paths that precede the formation of the vapor. Boiling occurs when the local vapor pressure of the liquid rises above the level of its local ambient pressure and sufficient energy is present to cautilise the phase change to a gas.

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Ayesha put two drops of oil on the lid of her tiffin box. Next to that, she put two drops of water and two drops of sugar solution. She tilted the lid. She saw some drops slid down quickly, while some were left behind. Which drops slid down her tiffin box the fastest?
Consider the following statements in respect of slow sand filter and rapid sand filter: 1. The two filters differ in respect of the standards regarding the non-uniformity of the sand used in their filtering media. 2. The two filters do not differ in respect of the effective size of the sand used in them. 3. The two filters differ in respect of their respective under-drainage system. 4. The two filters differ in respect of their respective rate of filtration. Which of the above statements are correct? 
Following are general statements about water drops. (a) Surface tension is responsible for the spherical shape of the water drops. (b) Even in the absence of gravitation, water drops have a spherical shape. (c) Formation of water drops occurs, if the mass of the water is stretched. Which of the above statement/statements is/are correct?
In vapor compression cycle having dry saturated vapor at the end of compression the refrigeration effect is given by? H1 – Enthalpy of vapor before compression H4 – Enthalpy of vapor before entering evaporator H2 – Enthalpy of vapor after compression
The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the
In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/passage and find out which of the four combinations is correct. 1. Severe storms happen in low-pressure weather systems. P.  Warm, wet air begins rising into the air.  Q. The drops join together to form clouds. R. The higher it rises, the cooler it becomes. S. Water vapor in the air forms drops, a process called condensation.  6. Then precipitation of some kind (rain, sleet, snow, or hail) will fall down to Earth’s surface.
Which of the following statements are correct pertaining to the value of uniformity coefficient Cu for filter sand? (1) For slow sand filters, Cu = 1.8 to 2.5 (2) For rapid sand filters, Cu = 1.3 to 1.7 (3) For slow sand filters, Cu = 1.3 to 1.7 (4) For rapid sand filters, Cu = 1.8 to 2.5
Cleaning is done by
(i) Scraping and removal in filters slow sand
(ii) Back washing in slow sand filters
(iii) Scraping and removal in filters rapid sand
(iv) Back washing in rapid sand filters
The correct answer is
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R: The sand used in slow sand filters is finer than that in rapid sand filters
Select your answer based on the coding system given below: