Description : How do scientists measure how much stuff is in a specified volume of a substance?
Last Answer : What is the answer ?
Description : For a given substance at a specified temperature, activity is __________ to fugacity. (A) Directly proportional (B) Inversely proportional (C) Equal (D) None of these
Last Answer : (A) Directly proportional
Description : A space time of 3 hours for a flow reactor means that (A) The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours (B) Three reactor volumes of feed ... to dump the entire volume of the reactor with feed (D) Conversion is cent per cent after three hours
Last Answer : (A) The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours
Description : Pick out the wrong statement pertaining to space velocity of flow reactors. (A) The unit of space velocity is (time) -1 (B) The space velocity of 3 hr -1 means that three reactor volumes of ... one third reactor volume of feed at specified conditions are being fed into the reactor (D) None of these
Last Answer : (C) The space velocity of 3 hr -1 means that one third reactor volume of feed at specified conditions are being fed into the reactor
Description : The number of vehicles moving in a specified direction on a roadway that pass a given point during specified unit of time, is called (A) Traffic volume (B) Traffic density (C) Basic capacity (D) Traffic capacity
Last Answer : Answer: Option A
Description : A control volume refers to what? a. A fixed region in space b. A reversible process c. an isolated system d. a specified mass
Last Answer : A fixed region in space
Description : What is the stuff inside the electric kettle at the bottom, which looks like flakes of some hard substance?
Last Answer : Lime scales. Put in CLR to clean it. Or chuck away. It is from your water.
Description : Isn't it really dangerous to build stuff from only one substance considering resonant frequenties?
Last Answer : The Parthenon would be standing to this day if it weren't for invaders.The Eiffel Tower -all steel.Castles of the world being made of stone still standing to this day. It seems different materials don ... As for Tesla's machine,no.Someone would have that by now and would be knocking down buildings.
Last Answer : Fluids have a specific mass volume
Last Answer : Solid matter has a specific mass size volume
Description : A liquid substance _______. A. has particles packed tightly together B. has definite volume C. has definite shape D. has particles arranged in a regular pattern?
Last Answer : has definite volume
Description : When a gas or a liquid is subjected to an increased pressure, the substance contracts, the bulk strain is defined as A. final volume ⁄ original volume B. final pressure ⁄ original pressure C. change in volume ⁄ original volume D. original volume ⁄ change in volume
Last Answer : change in volume ⁄ original volume
Description : Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the (A) Low pressure and high temperature (B) Low pressure and low temperature (C) High pressure and low temperature (D) High pressure and high temperature
Last Answer : (B) Low pressure and low temperature
Description : The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCvln (T2/T1) is valid for (A) Reversible isothermal volume change (B) Heating of a substance (C) Cooling of a substance (D) Simultaneous heating and expansion of an ideal gas
Last Answer : (D) Simultaneous heating and expansion of an ideal gas
Description : Fluid is a substance which offers no resistance to change of (A) Pressure (B) Flow (C) Shape (D) Volume
Last Answer : Answer: Option C
Description : Sum of the internal energy of a substance and the product of pressure and volume. a. Specific Heat b. Specific Gravity c. Isolated System d. Enthalpy
Last Answer : Enthalpy
Description : _____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave. a. Entrophy b. Enthalpy c. Specific Heat d. None of the above
Last Answer : Entrophy
Description : Is the amount of a substance that contains Avogadro’s number of atoms/molecules. a. mass b. matter c. gram-mole d. volume
Last Answer : gram-mole
Description : The change in physical size of a substance when its temperature changes. a. intensive property b. extensive property c. volume expansion d. thermal expansion
Last Answer : thermal expansion
Description : What is constant for a substance that is considered “incompressible”? A. Specific volume of density B. Pressure C. Temperature D. All of the above
Last Answer : Specific volume of density
Description : The mass of one mole of a substance in grams is known as ______. A. Molar weight B. Molar mass C. Molar volume D. Molar constant
Last Answer : Molar mass
Description : The “equation of state” refers to any equation that relates the ______ of the substance. A. Pressure and temperature B. Pressure, temperature and specific weight C. Temperature and specific weight D. Pressure, temperature and specific volume
Last Answer : Pressure, temperature and specific volume
Description : How much fuel can be jettisoned? a. A specific amount b. The captain decides c. All d. A specified amount must remain
Last Answer : d. A specified amount must remain