Related Questions

Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of
A Powder & grannular solids
B Liquids
C Low melting point semi-solids
D All of the above
In hydrometer analysis for a soil mass
A both meniscus correction and dispersing agent correction are additive
B both meniscus correction and dispersing agent correction are subtractive
C meniscus correction is additive and dispersing agent correction is subtractive
D meniscus correction is subtractive and dispersing agent correction is additive
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in
A the principle of test
B the method of taking observations
C the method of preparation of soil suspension
D all of the above
Hydrometer readings are corrected for:
A Temperature correction
B Meniscus correction
C Dispersing agent correction
D Temperature, meniscus and dispersing agent corrections
In order that a hydrometer may float vertically in electrolyte its C.G. should be
A lowered
B raised
C undisturbed
D displaced sideways
What formula is used to determine the area of a sphere?
A πr2l
B 2πr2l
C 34πr3
D 4πr2
Hypsometer is used to determine-
A Triple point of water
B Lower fixed point of mercury thermometer
C Rreezing point of water
D Upper fixed point of mercury thermometer
Which one of the following PHP function is used to determine a file’s last access time?
A filetime()
B fileatime()
C fileltime()
D filectime()
Which one of the following functions is used to determine whether a class exists?
A exist()
B exist_class()
C class_exist()
D __exist()
Which one of the following functions is used to determine object type?
A obj_type()
B type()
C is_a()
D is_obj()

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