The substance used as a smoke screen in warfare is
C2H2
SiCl4
P2O5
PCl5
- Which of the following is the most suitable abrasive for grinding high tensile strength materials?
- Ferromagnetic materials owe their properties to __________ inner sub-shells.
- Property responsible for the talcum powder to cling to the skin is the
- Which of the following is not a characteristic observed in material failure by fatigue fracture?
- The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
- __________ property of a material is determined by the Herbert Pendulum device.
- Case hardening is not done by
- Which of the following is the correct nature of shear stress distribution along the cross section in…
- Liquor poisoning generally occurs due to the presence of __________ in it.
- The dew point temperature lines on psychrometric charts are straight inclined sloping downwards to the…
- A material in which the atoms are arranged regularly in some directions but not in others, is termed…
- Consideration of the creep is the most important in case of the
- Pick out the wrong statement.
- Which of the following is preferred for riveting?
- Wrought iron is not
- Which one can be directly solidified from gaseous state without entering into liquid state?
- The following type of bonding is strongly directional in solids.
- Difference at any instant between the value of the controlled variable and the set point is called the
- __________ is the hardest oxide and is hence used where high wear resistance at high temperature is…
- Exposure to __________ accelerates the degradation of plastics.
- Hot extrusion process is not used for making
- Working of linear variable differential transducer (LVDT) is based on the principle of variable
- Stainless steel is welded with difficulty because of
- The most detrimental impurity in high pressure boiler feed water is
- Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect…
- Increasing sulphur content in pig iron tends to make it
- With increase in temperature, the surface tension of water
- The bank of tubes located at the back of the domestic refrigerators are the __________ tubes.
- In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer…
- The joint for soldering is supported by binding wire made of