The main charge in blast furnace is usually
Iron ore & coke
Iron ore, coke & air
Limestone, coke & iron ore
Limestone, sand & iron ore
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- In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb…
- The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________…
- Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
- Which of the following has the highest value of refractive index?
- For separating small pieces of metal from engine oil of a car, the best separating technique is the
- While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________…
- Superheating of steam is done at constant
- With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and __________…
- Presence of nickel & chromium in steel does not raise its
- Change in volume of metals from absolute zero temperature to their melting points is
- __________ test can be termed as the semidestructive test.
- Maximum hardenability of steel depends upon its
- The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature…
- The unit of gc is
- __________ pipe is the most suitable for carrying sanitary drainage.
- __________ rubber is generally used for making 'O' rings used for vacuum sealings.
- With increase in temperature, the electrical conductivity of semiconductors
- Pick out the wrong statement.
- While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen…
- Super conduction in metals is observed at a temperature of __________ °K.
- Oxyacetylene reducing flame is used while carrying out welding on
- All of the following alloying elements of steel increases hardness but sacrifice ductility, except
- Absolute zero pressure can be attained at a temperature of
- Identify the false statement
- In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean…
- Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.
- Wrought iron is never shaped by
- Nitriding of a steel part does not increase its
- For a first order chemical reaction, the concentration of the reactant decreases __________ with time.
- Unit of viscosity in CGS system is