Window panes of aeroplanes are normally made of
Perspex (PMMA)
Teflon (PTFE)
Bakelite (phenol formaldehyde)
Polystyrene
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- Austempering process results in the formation of __________ structure.
- The difference between gross & net calorific values of fuel is due to the
- As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint…
- Shaft/rotor speed is most accurately measured by a
- Super conduction in metals is observed at a temperature of __________ °K.
- In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb…
- Increasing the carbon content of steel
- Energy of the sun arises mainly from __________ reactions.
- About __________ ton of coke is required in a cupola to produce one ton of casting.
- The hardenability of steel decreases with
- Lead is added to 60:40 brass primarily to improve
- Which of the following is prone to cup and cone fracture?
- The most important consideration in value engineering is the
- Which of the following approaches the ideal gas behaviour most closely?
- Plants produce carbohydrates from the CO2 present in the atmosphere by
- Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by
- Runge-Kutta method is used to solve a/an
- Chlorine acts as a bleaching agent only in the presence of
- Pick out the correct statement about the condensation.
- Rain drops falling through atmospheric air attain limited terminal velocity, because of
- With increase in temperature, the electrical conductivity of a __________ decreases.
- Load cells used for the measurement of weight has
- Which of the following alloying elements is present in maximum percentage in high speed steel?
- Basicity of the slag in Indian blast furnace is in the range of
- Shampoos are commercially not available in the form of
- Parallel straight line pattern of temperature distribution for both hot and cold fluids is observed…
- __________ is a special constituent of chlorophyll without which photosynthesis is not possible.
- The activity co-efficient of the solute in a dilute solution
- Compressed dry air is used as the cutting fluid, while machining
- Which one is neutral in character?