Q. The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

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Q. The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?

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Q. Particle nature of cathode rays is proved due to the fact that they

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Q. The most commonly used moderator in nuclear power plants is

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Q. Babbit lining is used on brass/bronze bearings to increase the

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Q. The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong

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Q. Joining of thin foils is preferred to be done by

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Q. Which of the following metals reacts violently with water ?

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Q. A steam carraying pipeline is insulated with two layers of insulating materials with the inferior insulation material forming the inner part. If the two insulating layers are interchanged, the heat conducted will

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Q. Damage to metal surface by mechanical action is called

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Q. The escape velocity of a body on earth which is independent of its mass is about __________ km/second.

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Q. A reduction in thermal resistance during heat transfer does not occur in the

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Q. Unit of viscosity in CGS system is

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Q. Shaft/rotor speed is most accurately measured by a

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Q. __________ test determines the yield strength, Young's modulus of elasticity, percentage reduction in area & percentage elongation of a material.

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Q. The rolling process can not be used to produce

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Q. Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is

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Q. Presence of nickel & chromium in steel does not raise its

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Q. Hot extrusion process is not used for making

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Q. Addition of __________ to steel does not help in improving its machinability.

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