০০। "The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface". This statement pertaining to the solubility of gases in liquid is the __________ law.
ক) Raoult's
খ) Henry's
গ) Amgat's
ঘ) none of these
০১। "The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements." This is the statement of
ক) Law of Petit and Dulong
খ) Kopp's rule
গ) Nearnst heat theorem
ঘ) Trouton's rule
০২। "The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes". This is the __________ law.
ক) Dalton's
খ) Amgat's
গ) GayLussac's
ঘ) Avogadro's
০৩। °API gravity of water at N.T.P. is about
ক) 0
খ) 1
গ) 10
ঘ) 100
০৪। 'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the
ক) temperature vs. log (vapor pressure).
খ) vapor pressure vs. log (temperature).
গ) log (temperature) vs. log (vapor pressure).
ঘ) vapor pressure vs. temperature.
০৫। 'Giga' stands for
ক) 109
খ) 10-12
গ) 1012
ঘ) 1015
০৬। 1 ata is equivalent to
ক) 1 atm.
খ) 10 torr
গ) 0.98 Pascal
ঘ) 1 kgf/cm2
০৭। 1 bar is almost equal to __________ atmosphere.
ক) 1
খ) 10
গ) 100
ঘ) 1000
০৮। 1 BTU/ft3 is approximately equal to __________ kcal/m3.
ক) 1
খ) 9
গ) 4
ঘ) 252
০৯। 1 BTU/lb.←°F is equivalent to __________ kcal/kg.°C.
ক) 1
খ) 2.42
গ) 1.987
ঘ) 4.97
১০। 1 centipoise is equivalent to
ক) 1 gm/cm.second
খ) 1 centistoke
গ) 2.42 lb/ft.hr
ঘ) 2.42 lb/ft.second
১১। 1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is
ক) C4H9OH
খ) C3H21OH
গ) (C2H4)2H2.OH
ঘ) C2H33OH
১২। 1 gm mole of methane (CH4) contains
ক) 6.02 x 1023 atoms of hydrogen.
খ) 4 gm atoms of hydrogen.
গ) 3.01 x 1023 molecules of methane.
ঘ) 3 gms of carbon.
১৩। 1 Kcal/kg. °C is equivalent to __________ BTU/lb. °F.
ক) 1
খ) 2.42
গ) 4.97
ঘ) none of these
১৪। 1 kg of calcium carbide (CaC2) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour ?
ক) 5
খ) 10
গ) 15
ঘ) 20
১৫। 1 kg/cm2 is equal to
ক) 760 torr
খ) 1KPa
গ) 10 metres of water column
ঘ) 1 metre of water column
১৬। 1 kg/m2 is equal to __________ mm water column.
ক) 1
খ) 10
গ) 100
ঘ) 1000
১৭। 1 kgf/cm2 is not equal to
ক) 1 torr
খ) 1 bar
গ) 10000 mm wc
ঘ) 100 KPa = 100 000 N/m2
১৮। 1 Pascal (unit of pressure) is equal to __________ N/m2.