Q.1
In __________ process, there is an increase in entropy with no degradation of energy.
Q.2
Draft allowance given to patterns is for
Q.3
Potable water means the water used for
Q.4
Brittleness induced due to the presence of sulphur in steel can be reduced by adding
Q.5
Minimum safe distance between two liquid fuel storage tanks is equal to (where, H = height of the tank)
Q.6
Expansion device used in a window air-conditioner is a/an
Q.7
The following thermocouple may be used for measuring temperature upto 1873°K.
Q.8
Pick out the correct combination about the role of various additives used in polymers.
Q.9
Which of the following does not discharge the dust collected as a dry solid?
Q.10
Shampoos are commercially not available in the form of
Q.11
Color of brass changes from yellow to __________ after its dezincification which exemplifies selective leaching.
Q.12
Out of the following, the materials having maximum magnetic permeability is
Q.13
Wrought iron does not have
Q.14
Wrought iron does not have the
Q.15
For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm³) while the C.V. is same on weight basis (i.e., kcal/kg) ?
Q.16
The phenomenon of weld decay is found in case of
Q.17
With increase in annealing temperature, the following defect density decreases.
Q.18
Which of the following has the least oili-ness ?
Q.19
All of the following alloying elements of steel increases hardness but sacrifice ductility, except
Q.20
If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis ?
Q.21
In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the
Q.22
Change in volume of metals from absolute zero temperature to their melting points is
Q.23
Presence of nickel & chromium in steel does not raise its
Q.24
Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode
Q.25
Use of flux during soldering is done to
Q.26
"Internal energy of a gas obeying Vanderwall's equation of state, (p + a/v²)(V - b) = RT , depends upon its"
Q.27
The phenomenon occurring during explosion of a hydrogen bomb is
Q.28
A floating body oscillates about its __________ when it is displaced slightly.
Q.29
Which of the following is a permanent fastening?
Q.30
Magnetic permeability of iron is increased by its
Q.31
Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails
Q.32
Gross national product (GNP) means the total value of __________ in a country.
Q.33
The most serious manufacturing defect from fracture toughness point of view is
Q.34
Unit of surface tension in S.I. unit is
Q.35
In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular diffusivity (θ) and thermal diffusivity (α). The units of these quantities are.
Q.36
Fluorine is not a constituent of
Q.37
Superheated vapour behaves like
Q.38
The quantity of electricity required to deposit one gm equivalent of any substance is one
Q.39
Feed check valve is used in steam boilers to
Q.40
Fire in fuel gas pipelines is extinguished most effectively by
Q.41
Boiling point of water gets lowered at high altitudes (e.g., hills), because
Q.42
The most commonly used moderator in nuclear power plants is
Q.43
Role of a "collector" in froth floatation is to
Q.44
The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is
Q.45
FeO (s) + CO (g) = Fe (s) + CO₂ (g), k = 0. 435 at 1173E; At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K?
Q.46
Material of construction of foundary crucible is
Q.47
Plastics as a material of construction suffer from the drawback of low
Q.48
Which is the only metal that exists in liquid state at room temperature?
Q.49
Limestone is added in the blast furnace (during pig iron manufacture) to
Q.50
Function of blow down valve in a boiler is to
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