75252. One kg of hydrogen requires 8 kg of oxygen and produces
75253. The standard value of atmospheric pressure taken at sea level is
75254. The efficiency of Otto cycle depends upon the specific heats of the working substance.
75255. The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as
75256. The absolute zero pressure can be attained at a temperature of
75257. One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
75258. One m3 of methane (CH4) requires 2m3 of oxygen and produces 1m3 of carbon dioxide and 2m3 of water or steam.
75259. Coke oven gas is obtained by burning coke in an oven.
75260. A perpetual motion machine of the first kind is __________ according to first law of thermodynamics.
75261. One kg of carbon requires 8/3 kg of oxygen for its complete combustion and produces 11/3 kg of carbon dioxide gas.
75262. A process, in which the gas is heated or expanded in such a way that product of its pressure and volume remains constant, is called isothermal process.
75263. An open system is one in which
75264. One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to
75265. When the gas is heated at constant volume, the heat supplied
75266. In closed cycle gas turbine, the air is compressed
75267. For the same maximum pressure and temperature,
75268. In a steady flow process, the ratio of
75269. The entropy of the universe is continually on the increase.
75270. Select the correct statement as per Charles' law
75271. The unit of energy is S. I. units is
75272. A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
75273. Which of the following statement is correct according to Clausis statement of second law off thermodynamics?
75274. Diesel cycle consists of __________ processes.
75275. When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel is called
75276. The process is adiabatic, if the value of n in the equation pvn = C, is
75277. The molecular mass of a substance is the number of times a molecule of that substance is heavier than the hydrogen atom.
75278. The behaviour of super-heated vapour is similar to that of
75279. Briquetted coal is produced from the finely ground coal by moulding under pressure with or without a binding material.
75280. Which of the following is a reversible non-flow process?
75281. If in the equation pvn = C, the value of n = ∝ , then the process is called
75282. The property of the system, whose value for the entire system is equal to the sum of their values for the individual parts of the system is called extensive property
75283. Coal gas consists mainly of hydrogen, carbon monoxide and various hydrocarbons.
75284. When the finely ground coal is moulded under pressure with or without a binding material, the resulting fuel is called briquetted coal.
75285. For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
75286. The elements are made up of minute and chemically invisible particles as atoms.
75287. All perfect gases change in volume by 1 / 273th of its original volume at 0°C for every 1°C change in temperature, when the pressure remains constant. This statement is called
75288. A good fuel should have __________ ignition point.
75289. According to Kelvin-Planck's statement, a perpetual motion of the __________ is impossible.
75290. The amount of heat generated per kg of fuel is known as
75291. Carnot cycle has maximum efficiency for
75292. The entropy may be expressed as a function of
75293. It is __________ to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
75294. A close cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.
75295. Charles' law states that all perfect gases change in volume by __________ of its original volume at 0° C for every 1° C change in temperature, when pressure remains constant.