An abrupt and sudden fall in the reading of barometer is an indication of the____________________?
A. Storm
B. Rain
C. Clear weather
D. Cold wave
Chemical Engineering Basics
Out of the following, the lowest packing of atoms exists in ____________________ crystal lattice structure?
Out of the following, the lowest packing of atoms exists in ____________________ crystal lattice structure?
A. Hexagonal close, packed (hcp)
B. Face centred cubic (fcc)
C. Body centred cubic (bcc)
D. Simple cubic
Atomic _______________ is a whole number for an element?
Atomic _______________ is a whole number for an element?
A. Number
B. Weight
C. Radius
D. None of these
Titanium is produced by ___________________ of Ti Cl4 ?
Titanium is produced by ___________________ of Ti Cl4 ?
A. Electrolytic reduction
B. Calcium reduction
C. Magnesium reduction
D. Thermal dissociation
Metallic surveying tapes are made of _____________ which has a low co-efficient of expansion & enough strength ?
Metallic surveying tapes are made of _____________ which has a low co-efficient of expansion & enough strength ?
A. Invar
B. Hastelloy
C. Duralumin
D. Monel metal
In case of brasses, with decreasing zinc percentage and increasing copper percentage, its _____________ increases ?
In case of brasses, with decreasing zinc percentage and increasing copper percentage, its _____________ increases ?
A. Percentage elongation
B. Brinell hardness
C. Tensile strength
D. All A, B & C
Limestone addition in the blast furnace is done to flux _______________ present in the raw materials?
Limestone addition in the blast furnace is done to flux _______________ present in the raw materials?
A. SiO2
B. Al2O3
C. MnO2
D. P
Normalising of a casting does not__________________?
Normalising of a casting does not__________________?
A. Induce stresses in it
B. Refine its grain structure
C. Reduce segregation
D. Improve its mechanical properties
_____________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C ?
_____________ is the process of coating the surface of steel with aluminium oxide, thereby imparting it increased resistance to corrosion & oxidation upto a temperature of 700°C ?
A. Veneering
B. Galvanising
C. Electroplating
D. Calorising
Percentage of argon (by volume) in dry atmospheric air is about________________?
Percentage of argon (by volume) in dry atmospheric air is about________________?
A. 0.09
B. 0.3
C. 0.57
D. 0.94