Q. The smallest quantity of a substance, which can exist by itself in a chemically recognizable form is known as

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Q. The absolute zero pressure can be attained at a temperature of

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Q. One kg of ethylene (C₂H₄) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.

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Q. An open system is one in which

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Q. 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

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Q. When the gas is heated at constant volume, the heat supplied

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Q. The efficiency of a gas turbine is given by

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Q. In closed cycle gas turbine, the air is compressed

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Q. Which of the following is the correct statement?

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Q. The temperature at which the volume of a gas becomes zero is called

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Q. The heating of gas at constant volume is governed by

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Q. The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Boyle's law.

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Q. The fuel mostly used in cement industry and in metallurgical processes is

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Q. The principal constituents of a fuel are

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Q. In an extensive property of a thermodynamic system

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Q. When a gas is heated at constant pressure

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Q. By decreasing the highest temperature in the Carnot cycle, its efficiency is increased.

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Q. Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules. This statement is called Avogadro's law.

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Q. Wood charcoal is produced by heating the wood at 100°C.

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Q. The __________ is obtained when carbonisation of coal is carried out at 500° to 700° C.

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