29651. Atomic __________ is a whole number for an element.
29652. Work required for compression of a gas contained in a cylinder is 7000 kJ. During compression, heat interaction of 3000 kJ causes the surroundings to be heated. Internal energy change of the gas during the compression is __________ kJ.
29653. Highest cutting speed is achieved by the __________ tool material.
29654. Tin plated iron and galvanised iron are generally produced by
29655. In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of
29656. Dezincification is a form of corrosion espe-cially applicable to
29657. Which of the following materials is not suitable as a die material for wire drawing?
29658. By X-ray diffraction, it is not possible to determine the
29659. In continuous casting process, graphite moulds are used with a view to providing
29660. Energy required to compress a hot gas as compared to cold gas will be
29661. In the commercial production of which of the following metals, matallothermic reduction is used ?
29662. New water wells are disinfected with chlorine in the form of
29663. In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will
29664. Velocity of a gas in sound is not proportional to (where, T = Absolute temperature of the gas. P = Absolute pressure of the gas. y = Ratio of specific heats (Cp/Cv) ρ = specific weight of the gas)
29665. A material lacking in toughness is usually termed as
29666. The basic constituent of vegetable oils is
29667. Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which __________ with increase in the pressure of steam.
29668. Which of the following terminology is used for the temperature at which new grains are formed in a metal ?
29669. When a tuning fork vibrates, the waves produced in the fork are
29670. Fatigue limit of a material should not be increased by
29671. For a fixed cross-sectional area, the most economical channel section has maximum
29672. Pellets are not as popular a burden as sinter in the iron blast furnace, because of their
29673. A form of stress corrosion failure termed as 'season cracking' is generally observed in
29674. A material subjected __________ must have high resilience.
29675. Triple point of water is
29676. Solute atoms which cause yield point phenomenon in mild steel are/is
29677. __________ pipe is the most suitable for carrying sanitary drainage.
29678. Liquor poisoning generally occurs due to the presence of __________ in it.
29679. EMI stands for
29680. More than 95% of __________ is present in corrundum.
29681. Blow off cock is provided in steam boiler to
29682. Work hardening of a material
29683. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium
29684. Thermit welding is categorised as the __________ welding.
29685. A gas having a negative Joule-Thompson co-efficient, when throttled, will
29686. Annealing of metal does not
29687. Which of the following is a common constituent of both paint and oil varnish ?
29688. Lithium is a useful alloying addition to aluminium, because it
29689. Pick out the wrong statement about coating/electroplating of metals.
29690. In case of a, centrifugal pump, the ratio h1/h2 is termed as the __________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller).
29691. Brinell hardness number (BHN) of a material is a number, which has
29692. Vanadium addition to steel improves its
29693. Plants produce carbohydrates from the CO2 present in the atmosphere by
29694. Identify the correct statement with reference to the extractive metallurgy of aluminium.
29695. A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to
29696. Which of the following is not used as an alloying element in steel used for making permanent magnetic material ?
29697. What was established in 1988 as apex institution for housing finance?
29698. The fatigue resistance of a material is improved by the following technique.
29699. Increase in temperature, in general results in the
29700. Which of the following can be manufactured using powder metallurgy techniques?
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