Pasteurisation of milk means– (1) heating of milk to above 72°C (2) heating of milk to above 62°C (3) cooling of milk to about 62°C (4) cooling of milk to about 10°C

Pasteurisation of milk means– (1) heating of milk to above 72°C (2) heating of milk to above 62°C (3) cooling of milk to about 62°C (4) cooling of milk to about 10°C
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heating of milk to above 62°C
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Pasteurisation is the process in which milk is heated to – (1) 60°C for 10 minutes (2) 63° C for 20 minutes (3) 63°C for 30 minutes (4) 72°C for 10 minutes

Description : Pasteurisation is the process in which milk is heated to – (1) 60°C for 10 minutes (2) 63° C for 20 minutes (3) 63°C for 30 minutes (4) 72°C for 10 minutes

Last Answer : (3) 63°C for 30 minutes Explanation: Pasteurization for pasteurisation) is a process of heating a food, which is usually a liquid, to a specific temperature for a predefined length of time ... (assuming the pasteurized product is stored as indicated and is consumed before its expiration date).

Pasteurisation is the process in which milk is heated to (1) 60°C for 10 minutes (2) 63° C for 20 minutes (3) 63°C for 30 minutes (4) 72°C for 10 minutes

Description : Pasteurisation is the process in which milk is heated to (1) 60°C for 10 minutes (2) 63° C for 20 minutes (3) 63°C for 30 minutes (4) 72°C for 10 minutes

Last Answer : 63°C for 30 minutes

Process of heating milk to 72°C about 16 seconds and then cooling it to 4°C to destroy harmful bacteria is known as?

Description : Process of heating milk to 72°C about 16 seconds and then cooling it to 4°C to destroy harmful bacteria is known as?

Last Answer : Chromatography

Pick out the wrong statement.(A) Pasteurisation of milk involves moderate heating followed by cooling (B) Bakeries and breweries make use of yeasts (C) Enzyme is a complex nitrogenous compound (D) Oils and fats are alkaloids

Description : Pick out the wrong statement. (A) Pasteurisation of milk involves moderate heating followed by cooling (B) Bakeries and breweries make use of yeasts (C) Enzyme is a complex nitrogenous compound (D) Oils and fats are alkaloids

Last Answer : (D) Oils and fats are alkaloids

Pasteurisation of milk means (A) Removal of fatty and albuminous substance from it (B) Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics (C) Inhibiting the growth of micro-organisms without killing them (D) None of these

Description : Pasteurisation of milk means (A) Removal of fatty and albuminous substance from it (B) Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics (C) Inhibiting the growth of micro-organisms without killing them (D) None of these

Last Answer : (B) Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics

_________ is pressurised heating for a short time. a) pasteurisation b)drying c)vacuum packing d)canning

Description : _________ is pressurised heating for a short time. a) pasteurisation b)drying c)vacuum packing d)canning

Last Answer : a) pasteurisation

The heat treatment applied to milk before distribution to stabilize and to remove disease causing bacteria is called as – (1) Pasteurisation (2) Fermentation (3) Coagulation (4) Homogenisation

Description : The heat treatment applied to milk before distribution to stabilize and to remove disease causing bacteria is called as – (1) Pasteurisation (2) Fermentation (3) Coagulation (4) Homogenisation

Last Answer : (1) Pasteurisation Explanation: Pasteurisation is a process of heating milk for 30 minutes at 62° C and cooling rapidly to kill harmful bacteria.

For pasteurisation of milk by Flash method, at which temperature is milk heated?

Description : For pasteurisation of milk by Flash method, at which temperature is milk heated?

Last Answer : 100°C

The heat treatment applied to milk before distribution to stabilize and to remove disease causing bacteria is called as : (1) Pasteurisation (2) Fermentation (3) Coagulation (4) Homogenisation

Description : The heat treatment applied to milk before distribution to stabilize and to remove disease causing bacteria is called as : (1) Pasteurisation (2) Fermentation (3) Coagulation (4) Homogenisation

Last Answer : Pasteurisation

Pick out the wrong statement (A) A horizontal line on the humidity chart indicates the temperature changes at constant molal humidity (B) When water is cooled from 80 to 70°C by exposure to the air with a wet bulb temperature of 60°C, then both the approach & the range would be 10°C (C) For unsaturated air-water vapor mixture at atmospheric conditions, the wet bulb temperature & adiabatic cooling lines are the same (D) Relative saturation of unsaturated mixture of water vapor & air cannot be increased by either reducing the mixture temperature or by increasing the total pressure

Description : Pick out the wrong statement (A) A horizontal line on the humidity chart indicates the temperature changes at constant molal humidity (B) When water is cooled from 80 to 70°C by exposure ... & air cannot be increased by either reducing the mixture temperature or by increasing the total pressure

Last Answer : (D) Relative saturation of unsaturated mixture of water vapor & air cannot be increased by either reducing the mixture temperature or by increasing the total pressure

Air intake for an air compressor should be preferably taken from (A) A site, where cooling towers are located nearby (B) A site, where open coal yard in located nearby (C) An air conditioned room maintained at a temperature of 18°C (D) An outside atmosphere at 10°C

Description : Air intake for an air compressor should be preferably taken from (A) A site, where cooling towers are located nearby (B) A site, where open coal yard in located nearby (C) An air conditioned room maintained at a temperature of 18°C (D) An outside atmosphere at 10°C

Last Answer : (D) An outside atmosphere at 10°C

Adiabatic heating and Adiabatic cooling really means _________ and _________ respectively.  a. raising the temp and lowering the temp  b. maintaining the pressure and changing the temperature  c. decreasing the volume and increasing the pressure  d. lowering the temp and raising the temp

Description : Adiabatic heating and Adiabatic cooling really means _________ and _________ respectively.  a. raising the temp and lowering the temp  b. maintaining the pressure and changing the temperature  c. decreasing the volume and increasing the pressure  d. lowering the temp and raising the temp

Last Answer : raising the temp and lowering the temp

Optimum temperature of DNA polymerase of T. aquaticus is (A) 30°C (B) 37°C (C) 54°C (D) 72°C

Description : Optimum temperature of DNA polymerase of T. aquaticus is (A) 30°C (B) 37°C (C) 54°C (D) 72°C

Last Answer : Answer : D

A heat treatment food material at 72°C for 15 seconds, or 63°C for 30 minutes

Description : A heat treatment food material at 72°C for 15 seconds, or 63°C for 30 minutes

Last Answer : Ans. Pasteurization

What do you mean by “Tyndallisation” and “Pasteurisation”. State the methods of pasteurisation.

Description : What do you mean by “Tyndallisation” and “Pasteurisation”. State the methods of pasteurisation.

Last Answer : Tyndallisation : This is a fractional sterilization method. This method is used for sterilization of medicaments unstable at 1150C but able to withstand low temperature heating. This method consist of ... High Temperature Short Time (HTST) Vat pasteurization Ultra High Temperature(UHT)

Which of the following are optimum temperature conditions for making benzenediazonium chloride from aniline? (a) 0°C to 10°C (b) 20°C to 25°C (c) 30°C to 40°C (d) 45°C to 50°C

Description : Which of the following are optimum temperature conditions for making benzenediazonium chloride from aniline? (a) 0°C to 10°C (b) 20°C to 25°C (c) 30°C to 40°C (d) 45°C to 50°C

Last Answer : 0°C to 10°C

a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (1) 128 times (2) 256 times (3) 512 times (4) 64 times

Description : a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (1) 128 times (2) 256 times (3) 512 times (4) 64 times

Last Answer : 512times

2. In a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (1) 128 times (2) 256 times (3) 512 times (4) 64 times

Description : 2. In a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become: (1) 128 times (2) 256 times (3) 512 times (4) 64 times

Last Answer : 256 times

Lumirhodopsin is stable only at temperature below (A) –10°C (B) –20°C (C) –40°C (D) –50°C

Description : Lumirhodopsin is stable only at temperature below (A) –10°C (B) –20°C (C) –40°C (D) –50°C

Last Answer : Answer : D

Fats are solids at (A) 10°C (B) 20°C (C) 30°C (D) 40°C

Description : Fats are solids at (A) 10°C (B) 20°C (C) 30°C (D) 40°C

Last Answer : Answer : B

When heated from 0° to 10°C volume of a given mass of water will - (1) Increase gradually (2) Decrease gradually (3) Increase and after will decrease (4) Decrease and after will increase

Description : When heated from 0° to 10°C volume of a given mass of water will - (1) Increase gradually (2) Decrease gradually (3) Increase and after will decrease (4) Decrease and after will increase

Last Answer : (4) Decrease and after will increase

When water is heated from 0°C to 10°C. Its volume (1) increases (2) decreases (3) does not change (4) first decreases and then increases

Description : When water is heated from 0°C to 10°C. Its volume (1) increases (2) decreases (3) does not change (4) first decreases and then increases

Last Answer : (4) first decreases and then increases

The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is A. 213.5 cm/sec B. 313.5 cm/sec C. 413.5 cm/sec D. 500 cm/sec

Description : The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is A. 213.5 cm/sec B. 313.5 cm/sec C. 413.5 cm/sec D. 500 cm/sec

Last Answer : ANS: B

The average temperature of sewage in India, is A. 10°C B. 15°C C. 20°C D. 25°C

Description : The average temperature of sewage in India, is A. 10°C B. 15°C C. 20°C D. 25°C

Last Answer : ANS: C

The life expectancy of electrical insulation, is approximately halved for an increased operating temperature of _______________. A. 10°C B. 25°C C. 50°C D. 100°C

Description : The life expectancy of electrical insulation, is approximately halved for an increased operating temperature of _______________. A. 10°C B. 25°C C. 50°C D. 100°C

Last Answer : Answer: A

Maximum combustion temperature in gas turbines is of the order of 1100 to 10°C whereas same is around 00°C in I.C. engine ? Why ?

Description : Maximum combustion temperature in gas turbines is of the order of 1100 to 10°C whereas same is around 00°C in I.C. engine ? Why ?

Last Answer : High temperature in I.C. engine can be tolerated because it lasts for a fraction of second but gas turbines have to face it continuously which metals can’t withstand.

What happens, When water is heated from 0°C to 10°C the volume of water?

Description : What happens, When water is heated from 0°C to 10°C the volume of water?

Last Answer : First decreases then increases

In which type of climate does the temperature never rise above 10°C throughout the year?

Description : In which type of climate does the temperature never rise above 10°C throughout the year?

Last Answer : Tundra Climate

A Fahrenheit thermometer indicates a temperature of ‘ 14°F. its corresponding reading on the Celsius scale will be -----? A. – 2O°C B. – 10°C (Answer) C. + 10°C D. + 20°C

Description : A Fahrenheit thermometer indicates a temperature of ‘ 14°F. its corresponding reading on the Celsius scale will be -----? A. – 2O°C B. – 10°C (Answer) C. + 10°C D. + 20°C

Last Answer : B. – 10°C (Answer)

What is the life insulation if temperature increased by 10°C?

Description : What is the life insulation if temperature increased by 10°C?

Last Answer : The life of the machine insulation decreases by half if the temperature of the insulation increases by 10°C.

Citrus seeds can be stored with Charcoal at following temperature in dry conditions. a. 0-3°C b. 3-10°C c. 10-15°C d. Above 15°C

Description : Citrus seeds can be stored with Charcoal at following temperature in dry conditions. a. 0-3°C b. 3-10°C c. 10-15°C d. Above 15°C

Last Answer : 3-10°C

Date growth does not cease if temperature does not fall below: a. 0°C. b. 10°C c. 18°C d. 20°C

Description : Date growth does not cease if temperature does not fall below: a. 0°C. b. 10°C c. 18°C d. 20°C

Last Answer : 18°C

Thermophilic micro-organism grow well at temperature– 1) 10°C – 20°C 2) 20°C – 40°C 3) 50°C – 60°C 4) 5°C – 7°C

Description : Thermophilic micro-organism grow well at temperature– 1) 10°C – 20°C 2) 20°C – 40°C 3) 50°C – 60°C 4) 5°C – 7°C

Last Answer : 3) 50°C – 60°C

Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

Description : Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

Last Answer : (B) Potassium cyanide

Pick out the wrong statement. (A) In a multistep reaction, the slowest step is the rate determining step (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature (C) Slow chemical reactions have generally high values of activation energy (D) Molecularity of a reaction cannot be zero but the order of a reaction can be zero

Description : Pick out the wrong statement. (A) In a multistep reaction, the slowest step is the rate determining step (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature (C ... energy (D) Molecularity of a reaction cannot be zero but the order of a reaction can be zero

Last Answer : (B) In general, the rate of a reaction becomes triple for every 10°C rise in temperature

The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises from 10 to 100°C. (A) 256 (B) 512 (C) 112 (D) 612

Description : The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises from 10 to 100°C. (A) 256 (B) 512 (C) 112 (D) 612

Last Answer : (B) 512

A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be: (A) 5°C (B) 10°C (C) 20°C (D) 100°C

Description : A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal ... rise after a conversion of 0.5 will be: (A) 5°C (B) 10°C (C) 20°C (D) 100°C

Last Answer : (B) 10°C

For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times. (A) 8 (B) 12 (C) 16 (D) 32

Description : For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times. (A) 8 (B) 12 (C) 16 (D) 32

Last Answer : (C) 16

The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the (A) Increased temperature reduces the activation energy (B) Fraction of molecules having threshold energy increases (C) Collision frequency increases (D) Value of threshold energy decreases

Description : The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the (A) Increased temperature reduces the activation energy (B) Fraction of molecules having threshold energy increases (C) Collision frequency increases (D) Value of threshold energy decreases

Last Answer : (B) Fraction of molecules having threshold energy increases

A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be __________ c.c. (A) 2.73 (B) 28.3 (C) 273 (D) 283

Description : A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be __________ c.c. (A) 2.73 (B) 28.3 (C) 273 (D) 283

Last Answer : (B) 28.3

With a gas turbine engine, engine anti-icing should be selected ‘ON’: a. Whenever the igniters are on b. Whenever the IOAT is +10°C or below and the air contains visible moisture c. Whenever the TOAT is +10°C or below and it is raining d. Whenever the ice detector system warning light comes on

Description : With a gas turbine engine, engine anti-icing should be selected ‘ON’: a. Whenever the igniters are on b. Whenever the IOAT is +10°C or below and the air contains visible moisture c. Whenever the TOAT is +10°C or below and it is raining d. Whenever the ice detector system warning light comes on

Last Answer : b. Whenever the IOAT is +10°C or below and the air contains visible moisture

With a gas turbine engine, engine anti-icing should be selected ‘ON’: a. Whenever the igniters are on b. Whenever the IOAT is +10°C or below and the air contains visible moisture c. Whenever the TOAT is +10°C or below and it is raining d. Whenever the ice detector system warning light comes on

Description : With a gas turbine engine, engine anti-icing should be selected ON': a. Whenever the igniters are on b. Whenever the IOAT is +10°C or below and the air contains visible moisture c. Whenever ... is +10°C or below and it is raining d. Whenever the ice detector system warning light comes on

Last Answer : b. Whenever the IOAT is +10°C or below and the air contains visible moisture

A rod 3 m long is heated from 10°C to 90°C. Find the expansion of rod. Take Young’s modulus = 1.0 x 10^5 MN/m2 and coefficient of thermal expansion = 0.000012 per degree centigrade. 1. 0.168 cm 2. 0.208 cm 3. 0.288 cm 4. 0.348 cm

Description : A rod 3 m long is heated from 10°C to 90°C. Find the expansion of rod. Take Young’s modulus = 1.0 x 10^5 MN/m2 and coefficient of thermal expansion = 0.000012 per degree centigrade. 1. 0.168 cm 2. 0.208 cm 3. 0.288 cm 4. 0.348 cm

Last Answer : 3. 0.288 cm

A refrigerator is working on reversed carnot cycle between temperature of 30°C to –10°C with capacity of 10 tonnes. Calculate. (i) The COP (ii) Define ton of refrigeration (iii) Give the industrial application of refrigeration

Description : A refrigerator is working on reversed carnot cycle between temperature of 30°C to –10°C with capacity of 10 tonnes. Calculate. (i) The COP (ii) Define ton of refrigeration (iii) Give the industrial application of refrigeration

Last Answer : (ii) Ton of refrigeration: It is defined as the quantity of heat required to be removed from 1Ton water at 0oC to get ice at 0oC in one day. (iii) Industrial applications of refrigeration ... food stuff such as meat, fruit, fruit juice, vegetables etc. 5. Ice cooling of concrete for dam.

Are Scoville numbers constant, or do they increase/decrease over time and with heating/cooling?

Description : Are Scoville numbers constant, or do they increase/decrease over time and with heating/cooling?

Last Answer : I have wondered this! What about allowing them to ripen for longer before picking? Will a green Anaheim or Poblano have a higher Scoville if they are allowed to redden som before picking? Wonderful Q, @elbanditoroso, I hope someone here actually knows. And, BTW, sorry I couldn’t answer.

If you were designing a slightly-better-than average new house, what Green- or alternate energy / heating / cooling features or systems would you incorporate?

Description : If you were designing a slightly-better-than average new house, what Green- or alternate energy / heating / cooling features or systems would you incorporate?

Last Answer : Geothermal would be a must. I’d want a large, southern-facing Tesla solar roof and power walls, some kind of rainwater storage solution, veggie garden/compost, spray foam insulation.

What are your opinions about these 2 Questions related to heating and cooling?

Description : What are your opinions about these 2 Questions related to heating and cooling?

Last Answer : answer:As far as the politicians go, they are reptiles and require heat to survive. If refrigeration didn’t exist or cost 10x more, we’d all still be hanging out on front porches as our not-so distant ancestors did.

Do cats really consider their humans as interchangeable heating pads or cooling units?

Description : Do cats really consider their humans as interchangeable heating pads or cooling units?

Last Answer : People are furniture (and heating pads) for cats.

A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns white on cooling. An aqueou

Description : A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns white on cooling. An aqueou

Last Answer : A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns ... (3))_(3)` D. `NaNO_(3)`

On heating, a white amorphous inorganic compound becomes yellow and on cooling, turns white again. The salt may be

Description : On heating, a white amorphous inorganic compound becomes yellow and on cooling, turns white again. The salt may be

Last Answer : On heating, a white amorphous inorganic compound becomes yellow and on cooling, turns white again. The salt may be A. ... `ZnCO_(3)` D. `K_(2)CO_(3)`