15801. Two solutions A1 & A2 have pH value of 2 & 6 respectively. It implies that the solution
15802. Which of the following is a disaccharide?
15803. Hardness & tensile strength of austenitic stainless steel can be increased by
15804. Which of the following metals occurs in nature in their free metallic state ?
15805. The most suitable material for a sewer for carrying storm water is
15806. In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be
15807. Sulphur is melted in the sulphuric acid plant most commonly by employing
15808. In 18-4-1 high speed steel, 18, 4 & 1 respectively denote the percentage of
15809. Role of a "collector" in froth floatation is to
15810. For the running of power generating turbines, the steam used should be
15811. Creep consideration is the most important in case of the
15812. The diffusion co-efficient of Ni in Cu at 1000 K is 1.93 x 10-16 m2 . S-1 and it is 1.94 x 10-14 m2 S-1 at 1200 K. The activation energy (in k. J.mole-1 ) for the diffusion of Ni in Cu is
15813. Which of the following has rotten eggy smell ?
15814. Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
15815. In hot working, dynamic recovery occurs in
15816. Which of the following manufacturing processes produces the strongest components ?
15817. Cast iron compared to steel is better in
15818. Which of the following is a boiler accessory i.e., not a boiler mounting ?
15819. Which of the following forces does not act on a fluid at rest ?
15820. Density in the solid state is slightly less than that in its liquid state, in case of
15821. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
15822. __________ number determines whether the fluid flow in an open channel is supercritical, critical or sub-critical.
15823. The delivery pressure of boiler feed water pump compared to the boiler steam pressure is
15824. The excess air required for the combustion of pulverised coal is of the order of about __________ percent.
15825. Generally,a member can take shares in a Society to what extent of share capital?
15826. __________ of austenite decreases the hardenability in steel.
15827. A jig is used while __________ a hole.
15828. At 100% relative humidity, the dew point temperature of moist air is
15829. Which one is neutral in character ?
15830. Gage pressure within a spherical droplet of a fluid is 'p'. What will be gage pressure within a bubble of the same size & of the same fluid ?
15831. While the bin cards are used in the effective stores management, the queing theory is associated with the __________ time.
15832. Diameter of the rivet to be provided on a 20 mm. thick boiler plate will be __________ mm.
15833. Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.
15834. The product of a commercial direct reduction process is
15835. In the diving apparatus, helium is used along with oxygen, because it is
15836. Materials having resistivity ranging from 1 to 100 ohm. cm is termed as
15837. During sensible cooling of air, its wet bulb temperature
15838. Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog?
15839. If Reynolds number is greater than 1, then the
15840. The type of pump used for lifting large quantity of sewage is a __________ pump.
15841. Which of the following metals is not subjected to electrolytic refinning/purification?
15842. The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is
15843. The underground well of a biogas plant is called the
15844. Use of water as a manometric liquid suffers from the disadvantage of its
15845. The following thermocouple may be used for measuring temperature upto 1873°K.
15846. Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
15847. Closeness of packing is maximum in case of __________ crystal lattice.
15848. A material is capable of resisting softening at high temperature, because of its property termed as