Related Questions

Grain hardness is measured by the __________ hardness testing method.
A Knoop
B Rockwell F
C Shore sceleroscope
D Vicker's
If the total hardness of water is greater than its total alkalinity, the carbonate hardness will be equal to
A Total alkalinity
B Total hardness
C Total hardness total alkalinity
D Non carbonate hardness
Presence of __________ hardness is responsible for the temporary hardness in water.
A Carbonate
B Calcium
C Choride
D Sulphate
Which of the following hardness tests does not measure the indentation hardness of metals and alloys ?
A Vicker's hardness test
B Shore sceleroscope test
C Brinell hardness test
D Rockwell hardness test
Which of the following hardness tests uses the depth of penetration caused by the indentor as the parameter for arriving at the hardness value of a material ?
A Shore sceleroscope test
B Vicker's hardness test
C Brinell hardness test
D Rockwell hardness test
Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).
A H
B 12.6 H
C 13.6 H
D 14.6 H
The hardness of the lathe bed material is measured by the
A Shore sceleroscope
B Brinnel hardness tester
C Vicker's hardness tester
D Rockwell hardness tester
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
A Calcium sulphate
B Sodium chloride
C Sodium sulphate
D Magnesium chloride
Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
A Absolute instruments
B Indicating instruments
C Recording instruments
D Integrating instruments
India's latitudinal and longitudinal extent measured in degrees are almost the same, but its north-south extent measured in km is greater than its east-west extent. This is due to the fact that
A Longitudes are not parallel lines
B The distance between latitudes remains the same but the distance between longitudes is greatest at the Equator and nil at the poles where all longitudes join
C All longitudes with their opposites form great circles
D The earth is not a perfect sphere

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