Description : Glass is - (1) Super cooled liquid (2) Crystalline solid (3) Liquid crystal (4) None of these
Last Answer : (1) Super cooled liquid Explanation: Glass is sometimes called a Super cooled liquid because it does not form a crystalline structure, but instead forms an amorphous solid that allows molecules in the material to continue to move.
Description : Which of the following is a super-cooled liquid? (1) Ice-cream (2) Ammonia (3) Glass (4) Wood
Last Answer : (3) Glass Explanation: Glass is considered to be a supercooled liquid due to its lack of a first-order phase transition where certain thermodynamic variables such as volume, entropy ... where the intensive thermodynamic variables such as the thermal expansivity and heat capacity are discontinuous.
Description : Glass is (A) Mainly CaO (B) Subjected to galvanising (C) A super cooled liquid (D) All (A), (B) and (C)
Last Answer : (C) A super cooled liquid
Last Answer : Glass
Description : A super cooled liquid?
Description : In case of a super-cooled solution, which is on the verge of crystallisation, the free energy of the solution as compared to that of the solid is (A) More (B) Less (C) Same (D) More or less; depends on the nature of solution
Last Answer : (A) More
Description : During manufacture of glass, molten glass is cooled slowly to make it
Last Answer : lose brittleness.
Description : Why does glass crack when suddenly heated or cooled?
Last Answer : Glass is a bad conductor of heat but expands easily on heating. When it is suddenly heated or cooled, due to rapid expansion and contraction along the hot region and cold region it begins to crack.
Description : Choose the wrong statement (a) Temperature of medium being cooled must be below that of the evaporator (b) Refrigerant leaves the condenser as liquid (c) All solar thermally operated absorption systems are capable only of intermittent operation (d) frost on evaporator reduces heat transfer
Last Answer : Ans: a
Description : In a vapour compression cycle, the refrigerant immediately after expansion valve is (a) liquid (b) sub-cooled liquid (c) saturated liquid (d) wet vapour
Last Answer : Ans: d
Description : (4) Liquid Hydrogen + Liquid Oxygen Explanation: LOX and liquid hydrogen, used in the Space Shuttle orbiter, the Centaur upper stage of the Atlas V, Saturn V upper stages, the ... to withstand high combustion pressures and temperatures and they can be regeneratively cooled by the liquid propellant.
Last Answer : The BOD values of water indicate the (1) amount of organic debris (2) amount of oxygen used for biochemical oxidation (3) amount of oxygen used for biochemical reduction (4) amount of ozone used for biochemical oxidation
Description : Which of the following reactors is operated at high neutron flux and low power level? (A) Breeder reactor (B) Research reactor (C) Heterogeneous reactor (D) Liquid metal (e.g., molten sodium) cooled reactor
Last Answer : (B) Research reactor
Description : Thorium can be converted into U-233 in a __________ reactor. (A) Liquid metal cooled (B) Fast breeder (C) Thermal (D) Swimming pool
Last Answer : (B) Fast breeder
Description : The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump. (A) Electromagnetic (B) Reciprocating (C) Centrifugal (D) Volute
Last Answer : (A) Electromagnetic
Description : __________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid. (A) Dew point (B) Bubble point (C) Dry bulb temperature (D) Wet bulb temperature
Last Answer : (A) Dew point
Description : Double pipe heat exchangers are preferably useful, when (A) High viscosity liquid is to be cooled (B) Requirement of heat transfer area is low (C) Overall heat transfer co-efficient is very high (D) A corrosive liquid is to be heated
Last Answer : (B) Requirement of heat transfer area is low
Description : In a gas-liquid shell and tube heat exchanger, the (A) Presence of a non-condensable gas decreases the condensing film coefficient (B) Gases under high pressure are routed through the tube side, because high pressure ... water or steam condensate remain localised to the tubes (D) All 'a', 'b' & 'c'
Last Answer : (D) All 'a', 'b' & 'c'
Description : Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because (A) Convection becomes important (B) Conduction becomes important (C) Radiation becomes important (D) Sub-cooled boiling occurs
Last Answer : (C) Radiation becomes important
Description : In sub-cooled boiling, (A) Temperature of the heating surface is less than the boiling point of the liquid (B) Temperature of the heating surface is more than the boiling point of the liquid (C) ... from heating surface are absorbed by the mass of the liquid (D) Very large vapour space is necessary
Last Answer : (B) Temperature of the heating surface is more than the boiling point of the liquid
Description : Which of the following situations can be approximated to a steady state heat transfer system? (A) A red hot steel slab (having outside surface temperature as 1300°C) exposed to the atmospheric air at ... flowing at the rate of 6 Kg/minute through a copper pipe exposed to atmospheric air at 35°C
Last Answer : (B) 10 kg of dry saturated steam at 8 kgf/cm2 flowing through a short length of stainless steel pipe exposed to atmospheric air at 35°C
Description : A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid. (A) Sub-cooled (B) Saturated (C) Non-solidifiable (D) None of these
Last Answer : (A) Sub-cooled
Description : ____________is the difference between the saturation temperature for the given pressure and the actual sub cooled liquid temperature. a) Degrees of Superheat, °SH b) Degrees of Sub cooled, °SB c) Both a and b d) None of the above
Last Answer : Degrees of Sub cooled, °SB
Description : __________________ is a liquid at the saturations which has temperature equal to the boiling point corresponding to the existing pressure. a. Saturation Temperature b. Sub cooled Liquid c. Compressed Liquid d. Saturated Liquid
Last Answer : Saturated Liquid
Description : _________________ is one which has a pressure higher than the saturation pressure corresponding to the existing temperature. a. Saturation Temperature b. Sub cooled Liquid c. Compressed Liquid d. Saturated Liquid
Last Answer : Compressed Liquid
Description : ________________ is one which has a temperature lower than the saturation temperature corresponding to the existing pressure. a. Saturation Temperature b. Sub cooled Liquid c. Compressed Liquid d. Saturated Liquid
Last Answer : Sub cooled Liquid
Description : ______________ is the temperature at which liquids start to boil or the temperature at which vapors begin to condense. a. Saturation Temperature b. Sub cooled Liquid c. Compressed Liquid d. Saturated Liquid
Last Answer : Saturation Temperature
Description : In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state. a. Rankine Process b. Carnot Cycle c. Joule-Thomson process d. Refrigeration process
Last Answer : Joule-Thomson process
Description : Most of the nuclear power plants operating in the United States are: w) pressurized water reactors x) boiling water reactors y) high-temperature gas-cooled reactors z) liquid-metal fast breeder reactors
Last Answer : ANSWER: W -- PRESSURIZED WATER REACTORS
Description : In which non-conventional source of energy is India referred to as a super power ? -SST 10th
Last Answer : India is referred to as a super power in wind power.
Description : Surplus earned by a factor other than land in the short period of referred to as- (1) economic rent (2) net rent (3) quasi-rent (4) super-normal rent
Last Answer : (3) quasi-rent Explanation: Quasi-rent is the surplus which is received in the short period because of demand exceeding the supply by the man made factors besides land. It is an analytical term ... opportunity cost is defined as the current income minus the income available in the next best use.
Description : Surplus earned by a factor other than land in the short period of referred to as (1) economic rent (2) net rent (3) quasi-rent (4) super-normal rent
Last Answer : quasi-rent
Description : Glass is referred to as
Last Answer : super cooled liquid.
Description : Why is oil sometimes referred to as liquid sunshine?
Last Answer : What is the answer ?
Description : Reactors in commercial nuclear power plants in the U.S. are often referred to as thermal reactors. A thermal reactor uses: w) fissionable plutonium-239 as fuel. x) a relatively low heat output. y) neutrons moderated to relatively low energies. z) liquid sodium as a coolant.
Last Answer : ANSWER: Y -- NEUTRONS MODERATED TO RELATIVELY LOW ENERGIES.
Description : What happens when water is cooled from 8°C to 0°C? 1. Its volume decreases uniformly, becoming minimum at 0°C. 2. Its density increases uniformly, attaining maximum value at 0°C. 3. Its volume decreases up to 4°C and then increases ... is/are correct? (a) Only 1 (b) Only 2 (c) 3 and 4 (d) 1 and 2
Last Answer : Ans:(c)
Description : Which plastic acquires hardness perma- nently when heated and cooled?
Last Answer : Thermosetting plastics
Description : Give reason: Water kept in porcelain container will not get cooled if it is glazed.
Last Answer : Glazing plugs the pores present in porcelain articles. If pores are present, water oozes from these pores and gets evaporated. This has a cooling effect on the water inside, As the pores are plugged, water does not get evaporated hence no cooling.
Description : Super cooling is cooling of liquid _____. (1) below melting point (2) below freezing point (3) at melting point (4) above melting point
Last Answer : (2) below freezing point Explanation: Supercooling is the process of chilling a liquid below its freezing point, without it becoming solid.
Description : Super cooling stands for cooling of a liquid – (1) at freezing point (2) below freezing point (3) at melting point (4) above melting point
Last Answer : (2) below freezing point Explanation: Supercooling, also known as undercooling, is the process of lowering the temperature of a liquid or a gas below its freezing point without it ... droplets of water below their freezing point. Refrigeration is a popular commercial application of supercooling.
Description : Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a (A) Disc bowl centrifuge (B) Sharpies super-centrifuge (C) Batch basket centrifuge
Last Answer : (A) Disc bowl centrifuge
Description : Super cooling stands for cooling of a liquid : (1) at freezing point (2) below freezing point (3) at melting point (4) above melting point
Last Answer : below freezing point
Description : Why aren't cars that are manufactured today air cooled?
Last Answer : Air cooled, for larger engines would almost have to be a radial engine as opposed to an inline V-8 or V-6 wouldn’t it? Add. How many cylinders is your corvair?
Description : How to recook a cooled, not completely cooked pumpkin pie?
Last Answer : If the crust has browned on the edge then put foil around the edge and bake again. I haven’t had a problem re-cooking like that.
Description : Would you expect the denatured DNA to regain its transforming capacity when cooled?
Last Answer : This sounds like a homework question.
Description : In a car, is heat cooled in the radiator?
Last Answer : Yes, water circulating through the block is cooled in the radiator then circulated back out.
Description : I’m teary-eyed but never cry, silver-tongued, but never lie. double-winged, but never fly, air-cooled, but never dry. What am I? -Riddles
Last Answer : Mercury. The element looks shiny, silver, and is wet. The god Mercury has two wings but only uses them to run.
Description : If the atmosphere is cooled, what is its capacity for water vapour? -General Knowledge
Last Answer : The answer is 'Lowered'
Last Answer : answer:
Last Answer : "Yes. Satellites pay close attention to the" hot side "and" cold side "(there is quite a significant temperature difference between the sunny side and the shady side). This should be taken into account in the orbit. It 's a pretty complicated area of satellite production.
Description : A piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and then cooled with water. The gas evolved is
Last Answer : A piece of magnesium ribbon was heated to redness in an atmosphere of nitrogen and then cooled with ... . ammonia B. hydrogen C. nitrogen D. oxygen