Q. What is the pH of distilled water ?

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Q. Pick out the correct statement.

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Q. Non-ferrous alloys used for making cutting tools need not have high

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Q. Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

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Q. Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be

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Q. Glycerene is used as a coolant in cooling of some engines instead of water, because

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Q. Cold working of a material results in increase in hardness, which is termed as the __________ hardening.

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Q. With increase in temperature, the electrical conductivity of a __________ decreases.

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Q. All the atoms of the world comprise of electrons, proton & neutron except that of __________ atom in which neutron is absent.

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Q. Which of the following gases cause global warming ?

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Q. Multistage compression of air as compared to single stage compression offers the advantage of

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Q. Fine grained steels have

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Q. Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

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Q. What is the percentage of chromium in 18-4-1 high speed steel ?

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Q. Preheating before welding is done to

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Q. Thermal diffusivity of a substance is proportional to (where, k = Thermal conductivity)

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Q. Dew point temperature always gives an indication of the __________ of the moist air.

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Q. Hot extrusion of aluminium is done in the temperature range of __________ °C.

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Q. Stellite is a __________ material.

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Q. Percentage of argon (by volume) in dry atmospheric air is about

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