Answer / priyankar talukdar

The essential steps in winemaking can be summarized as follows:
 Extract the flavor and aroma from the base ingredients by chopping, crushing, pressing, boiling or soaking them.
 Add sugar, acid, nutrients, and yeast to the fermentation media or liquor to achieve the proper ratio and ferment, covered, for 3 to 10 days in a primary fermentation vessel (crock, jar or polyethylene pail) at 70-75 degrees Fahrenheit.
 Strain off the liquid from the pulp, put it (the liquid) into a secondary fermentation vessel (a carboy or jug), fit a fermentation trap (airlock) on the mouth of the bottle, and allow fermentation to proceed at 60-65 degrees Fahrenheit until all bubbling ceases (after several weeks).
 Siphon the wine off the sediments (lees) into another clean secondary fermentation vessel. Reattach the fermentation trap. Repeat after another one or two months and again before bottling.
 When wine is clear and all fermentation has stopped, siphon into wine bottles and cork the bottles securely. Leave corked bottles upright for 3-5 days and then store them on their side at 55 degrees Fahrenheit for six months (white wine) to a year (red wine) before sampling. If not up to expectations, allow to age another year or more.

Answer / nanda kumar

In specification with grape wine first the grapes are
squashed into mash and then little yeast is added into it
and it is left for a minimum time at a specific temperature
for bacterial decomposition where yeast acts as a bacterial
catalyst and the chemical reaction converts it into grape
wine.

what is zeroth law ?

6 Answers   ISRO,

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CHEMICAL MATERIAL BALANCE – EXAMPLE 2.6 : According to Raoult's law for ideal liquid, x (PSAT) = yP where x is mole fraction of component in liquid, y is mole fraction of component in vapor, P is overall pressure and PSAT is saturation pressure. A liquid with 60 mole % component 1 and 40 mole % component 2 is flashed to 1210 kPa. The saturation pressure for component 1 is ln (PSAT) = 15 - 3010 / (T + 250) and for component 2 is ln (PSAT) = 14 - 2700 / (T + 205) where PSAT is in kPa and T is in degree Celsius. By assuming the liquid is ideal, calculate (a) the fraction of the effluent that is liquid; (b) the compositions of the liquid and vapor phases. The outlet T is 150 degree Celsius.

1 Answers  

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Question 33 – By using Excel program either on laptop or desktop PC, solve the differential equation dy / dx = -2y + x + 4 with h = 0.005, initial values : x = 0, y = 1. The 4th order Runge-Kutta method provides : y(N + 1) = y(N) + (1/6) (k1 + 2k2 +2k3 + k4), k1 = h [ -2y(N) + x(N) + 4 ], k2 = h { -2 [ y(N) + k1 / 2 ] + x(N) + h / 2 + 4 }, k3 = h { -2 [ y(N) + k2 / 2 ] + x(N) + h / 2 + 4 }, k4 = h { -2 [ y(N) + k3 ] + x(N) + h + 4 }. What is the value of y at x = 0.5?

1 Answers  

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Explain the factors involved in designing kettle type reboiler?

0 Answers  

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hi i need cpcl written exam question papers if anybody pls help me

0 Answers  

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Why is steam added into the cracker in thermal cracking?

2 Answers  

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What is vapour flooding and liquid floodin in distillation?

0 Answers   Deepak Fertilisers,

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ENGINEERING PHYSICS - EXAMPLE 30.2 : The Planck-Einstein relation connects the particulate photon energy E with its associated wave frequency f to produce E = hf. Let h to be the Planck constant. The frequency f, wavelength L and speed of light c are related by E = hc / L. With p denoting the linear momentum of a particle, the de Broglie wavelength L of the particle is given by L = h / p. (a) Find the equation of E as a function of p and c. (b) If E has a unit of electron-volt and f has a unit of 1 / second, then what is the unit of h?

1 Answers  

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What is the most common carrier gas used in pneumatic conveying?

0 Answers  

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Whether long question or short question I can expect in the interview at IOCL ?

0 Answers   IOCL,

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What are the frequently asked technical questions in chemical engineering during PI?

0 Answers  

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who is the first atomic scientist in india?

5 Answers   IGCAR,

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