29601. Principal alloying element in Elinvar (used for making hair springs for watches) is
29602. The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be
29603. Tesla metre per ampere (T. m/A) is the unit for the measurement of
29604. Earing is a defect found in steels after the following metal working operation (s).
29605. For a small scale toy factory, the fixed cost per month is Rs. 5000/-. The variable cost per toy is Rs. 20 and sales price is Rs. 30 per toy. The break even production per month will be __________ toys.
29606. Hydrogen can be
29607. Internal energy of a gas obeying Vanderwall's equation of state, , depends upon its
29608. __________ wire is never used for making the heating element.
29609. Pick out the correct statement
29610. Ammonia gas can be dried by
29611. Consumable electrodes are used in the __________ welding.
29612. Magnesium is present in
29613. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
29614. The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their
29615. A material having good damping property is likely to have
29616. Exposure to __________ accelarates the degradation of plastics.
29617. Steel produced from phosphatic iron is __________ in nature.
29618. __________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C.
29619. Which of the following has the least oili-ness ?
29620. Surface finish of casting does not depend upon the
29621. Load cells used for the measurement of weight has
29622. While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about __________ °C.
29623. For the Stoke's law to be valid in the case of a falling sphere in a fluid, the
29624. Cold chiesel & hammers are made of
29625. Which of the following does not lower the surface tension of liquids ?
29626. __________ property of a material is determined by the Herbert Pendulum device.
29627. Cathodic protection is widely used in controlling corrosion in
29628. Methyl orange indicator turns
29629. Out of the following, the most melleable material is
29630. Addition of silicon to aluminium improves its
29631. Which of the following properties of a solid is not dependent on crystal imperfection ?
29632. In a good rimming steel
29633. "'Dikes' are low height walls made around the storage vessels meant for storing hazardous & inflammable material (e.g., petroleum products). Volume of dikes is equal to (where, V = volume of the storage vessel)
29634. The Urban Co-operative Movement started in India during 1915 based on which committee report?
29635. Chalcopyrite is an ore of
29636. The following is employed as sacrificial anode to provide cathodic protection to ships, pipelines and storage tanks.
29637. Heat transfer by __________ is almost absent in case of fluidised bed drying operation.
29638. Increasing the carbon content of steel
29639. __________ metal is used as a bearing liner material.
29640. For an ideal gas, Cp - Cv is
29641. Sand used to stop the green sand from sticking to the pattern is termed as the __________ sand.
29642. Brazing filler metal used for joining steel plates
29643. Fine grain size in metallic material will
29644. Electrometallurgical methods of metal extraction is normally used for those metals
29645. Lowering of recrystallisation temperature of metals can be achieved by its
29646. An example of a buffer solution is
29647. A solid aluminium ball, when quenched in a water bath maintained at 40°C, cools down from 550°C to 450°C in 20 seconds. The expected temperature of the ball after next 20 seconds may be about __________ °C.
29648. Name the safety device used to protect the boiler, when the water level falls below a minimum level.
29649. Cold chiesel's hammers are made of
29650. In the X-ray radiography technique, the tube voltage for thicker plates as compared to thin plates, should be
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