Description : Two cubic meters of a gas at 30 degrees Kelvin are heated at a constant pressure until the volume doubles. What is the final temperature of the gas?
Last Answer : 60
Description : A gas at 0 degrees C and at normal atmospheric pressure has a volume of 273 cubic centimeters. If it is held at constant pressure until its volume is doubled, its temperature will be which one of the ... it be w) 2 degrees Celsius x) 200 degrees Celsius y) 273 degrees Celsius z) 546 degrees Celsius
Last Answer : ANSWER: Y -- 273 DEGREES CELSIUS
Description : At one atmosphere, a cylinder with movable piston contains 2,000 milliliters of gas. If the pressure is increased to 5 atmospheres and the temperature remains unchanged, what is the new volume of the gas? w) 10,000 milliliters x) 400 milliliters y) 1,000 milliliters z) 4,000 milliliters
Last Answer : ANSWER: X -- 400 MILLILITERS
Description : In a consolidated drained test on a normally consolidated clay, the volume of the soil sample during shear (A) Decreases (B) Increases (C) Remains unchanged (D) First increases and then decreases
Last Answer : (A) Decreases
Description : Which of the following is TRUE of a sample of gas at a constant temperature when the pressure is doubled? w)the volume doubles x)the volume halves y)the volume remains the same
Last Answer : ANSWER: X -- THE VOLUME HALVES
Description : At a given temperature, the volume of a gas dissolved in a solvent __________ with increase in pressure. (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the gas
Last Answer : C) Remains unchanged
Description : A gas has a temperature of 14 degrees C, and a volume of 4.5 L. If the temperature is raised to 29 degrees C and the pressure is not changed, what is the new volume of the gas?
Last Answer : V1/T1 = V2/T2 (Charles' Law) T is in Kelvin. Celsius temp plus 273.15 = K T1 = 14 +273 = 287 K T2 = 29 + 273 = 303 K 4.5 / 287 = V2 / 303 V2 = 4.75 L = 4.8 L
Description : A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be __________ c.c. (A) 2.73 (B) 28.3 (C) 273 (D) 283
Last Answer : (B) 28.3
Description : If the volume of a gas changes by a factor of 3, with pressure remaining constant, the temperature in Kelvin will change by a factor of: w) 1/9 x) 1/3 y) 3 z) 9
Last Answer : ANSWER: Y -- 3
Description : At zero degrees Celsius and one atmosphere (STP), the volume of a gas is 1,000 milliliters. If the temperature is increased to 25 degrees Celsius and the pressure is doubled, what is the new volume of the gas? w) 546 milliliters x) 500 milliliters y) 1,000 milliliters z) 273 milliliters
Last Answer : ANSWER: W -- 546 MILLILITERS
Description : The equilibrium constant for the gas phase reactio A + B = C + D is 10-3. The rate of the forward reaction is 10-11 cubic centimeters per molecule per second. What is the rate constant of ... second y) 10-10 cubic centimeters per molecule per second z) 10-14 cubic centimeters per molecule per second
Last Answer : ANSWER: Z -- 10-14 CUBIC CENTIMETERS PER MOLECULE PER SECOND
Description : At constant temperature the pressure of 22.4 dm^3 volume of an ideal gas was increased from 10^5 kPa to 210 kPa, New volume could be -
Last Answer : At constant temperature the pressure of 22.4 dm3 volume of an ideal gas was increased from 105 kPa to 210 kPa, New ... 2 dm3 c. 22.4 dm3 d. 5.6 dm3
Description : If a radioactive sample has decayed until only one eighth of the original sample remains unchanged how many half-lives have elapsed?
Last Answer : 3
Description : At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbent (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Last Answer : (B) Decreases
Description : What will be the pressure of a sample of 48.0 grams of oxygen gas in a glass container of volume 5.2 L at 25 degrees Celsius?
Last Answer : PV = nRTP = pressure = ?V = volume = 5.2 Ln = moles of gas = 48 g x 1 mole/32 g = 1.5 moles O2 gasR = gas constant = 0.0821 L-atm/K-moleT = temperature in K = 25 + 273 = 298 KSolving for P = nRT/V = (1.5)(0.0821)(298)/5.2P = 7.0 atm (to 2 significant figures)
Description : Which of the following is the best example of law of conservation of mass? [NCERT 1975] (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2. (B) When 12 g of carbon is ... mass remains unaltered. (D) The weight of a piece of platinum is the same before and after heating in air.
Last Answer : (A) 12 g of carbon combines with 32 g of oxygen to form 44 g of CO2.
Description : One cubic metre of water weighs (A) 100 litres (B) 250 litres (C) 500 litres (D) 1000 litres
Last Answer : Answer: Option D
Description : The volume of an ideal gas is directly proportional to its a. pressure b. Celsius temperature c. Kelvin temperature d. Fahrenheit temperature
Last Answer : Kelvin temperature
Description : What is he required surface finish for raised or flat faced gasket surfaces? a) 63 µ in. b) 125 µ in-250 µ in. c) 250 µ in-400 µ in. d) 400-500 µ in.
Last Answer : b) 125 µ in-250 µ in.
Description : While swimming a depth of 13m in a fresh water lake a fish emits an air bubble of volume 2 mm² atmospheric pressure is 100kpa what is the original pressure of the bubble. a. 217.17 kpa b. 119 kpa c. 326.15 kpa d. 210 kap Pabs = Pg + Patm
Last Answer : 217.17 kpa
Description : The pressure is changed from 500 kPa to 250 kPa. What would you expect the new volume to be if the initial volume is 200 mL?
Last Answer : 400 mL(Explanation): again boyle's law PV=PV. Since the pressure is halved (500 to 250), then the volume must be doubled in order to maintain this equation. 200 x2=400 so that's the answer
Description : The volume of a gas under standard atmospheric pressure & 76 cmHg is 200m³. What is the volume when pressure is 80 cmHg if the temperature is unchanged? a) 180 in³ b) 170 in³ c) 160 in³ d) 190 in³ Formula: P2V2 = P1V1
Last Answer : 190 in³
Description : With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop (A) Decreases (B) Remains unchanged (C) Increases (D) Decreases exponentially
Last Answer : (C) Increases
Description : With increase in pressure (above atmospheric pressure), the Cp of a gas (A) Increases (B) Decreases (C) Remains unchanged (D) First decreases and then increases
Last Answer : (A) Increases
Description : With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature). (A) Increases (B) Remains unchanged (C) Decreases (D) Decreases linearly
Description : Thermal conductivity of a gas at low density, __________ with increase in temperature. (A) Decreases (B) Increases (C) Remains unchanged (D) May increase or decrease; depends on the gas
Last Answer : (B) Increases
Description : What happens to the volume of gas when its temperature is raised and its pressure is kept constant?
Last Answer : Need answer
Description : Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to __________ °C. (A) 270 (B) 327 (C) 300 (D) 540
Last Answer : (B) 327
Description : convert 9 cubic centimeters to fluid ounces (to the nearest thousandth). -General Knowledge
Last Answer : 9 cubic centimeters is equal to 0.304 fluid ounces. 1 cubic centimeters = 0.03381 fluid ounces
Description : What is the ideal efficiency of a reversible heat engine cyclically operating between a source temperature of 600 degrees Kelvin and a sink temperature of 150 degrees Kelvin?
Last Answer : ANSWER: 75 PERCENT
Description : Zero degrees Kelvin is equal to what temperature on the Celsius scale?
Last Answer : ANSWER: - 273 DEGREES CELSIUS or -273.15 DEGREES CELSIUS
Description : A rise in temperature of 20 Kelvin degrees is equal to a rise of: w) 20 degrees Celsius x) 36 degrees Celsius y) 68 degrees Celsius z) 293 degrees Celsius
Last Answer : ANSWER: W -- 20 DEGREES CELSIUS
Description : What is the Celsius temperature corresponding to 100 degrees Kelvin?
Last Answer : ANSWER: -173 DEGREES CELSIUS
Description : a gas has a pressure of 766.7 torr at a temperature of 10.0°C. the sample contains 2.35 moles of xenon. what is the volume of the gas in liters?
Last Answer : Using PV=nRT, 10.0ºC = 283.15ºK, R = 62.36 L torr/mol KV= (nRT)/PV = (2.35m*(62.36 L torr/mol K)*283.15ºK)/766.7 TorrV = 54.12 L
Description : How many joules are required to cause the temperature of one gram of water to be raised from 24 degrees Celsius to 25 degrees Celsius.
Last Answer : ANSWER: 4.18 JOULES
Description : If helium is introduced in a reactor containing O2 , SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 ( ... 's principle). (A) Decreases (B) Increases (C) Remains unaltered (D) Changes unpredictably
Description : How much tomatoes are required for one kg tomato seeds ? (a) 50 – 300 kg (b) 300 — 350 kg(c) 160 — 210 kg (d) 200 — 250 kg
Last Answer : (c) 160 — 210 kg
Description : X is a working and Y is sleeping partners in a business. X puts in Rs. 2500 and Y puts in Rs.3000. X receives 25/2% of the profit for managing the business and the rest is divided in proportion to their capital. What does Y get out of a profit of Rs. 440? A) 210 B) 200 C) 250 D) 275
Last Answer : Answer: A) Total profit = Rs. 440 X's share for managing the business i.e 25/2 % = {25/ 100}{440/2}=Rs.55 Remaining profit of X and Y as per their capital = 440 - 55= Rs. 385 Ratio of amounts = 2500 : 3000 ... 5}/{11}= Rs.175 X's total share = 175 + 55= Rs. 230 Y's share = 385{6}/{11}=Rs.210
Description : In a counter-current extractor, as the axial mixing increases, the extraction efficiency (A) Increases (B) Decreases (C) Remains unchanged (D) Depends on the pressure of the system
Description : An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are ... (D) More number of trays are required and the residue composition is more dilute in methano
Last Answer : (A) Less number of trays are required
Description : The boiling points of pure components of a binary system __________ with increase in total pressure of the system. (A) Decreases (B) Increases (C) Remains unchanged (D) May increase or decrease, depends on the system
Description : With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Description : Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N2 + 3H2 ⇌ 2NH3 . (A) Increases (B) Decreases (C) Remains unchanged (D) Unpredictable from the data
Description : Bulk diffusion in catalyst pore __________ with increase in pressure. (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially
Description : The melting point of paraffin wax (which contracts on solidification) __________ with pressure rise. (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases linearly
Description : If we increase the pressure on a substance (which is at its triple point), then the triple point (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on the substance
Last Answer : (C) Remains unchanged
Description : For an isothermal process, the internal energy of a gas (A) Increases (B) Decreases (C) Remains unchanged (D) Data insufficient, can't be predicted
Description : If the amount of the steam used in steam distillation is increased, the temperature of distillation (A) Increases (B) Decreases (C) Remains unchanged (D) Depends on relative volatility
Description : With increase in temperature, the mutual solubility of two liquids (A) Increases (B) Decreases (C) Remains unchanged (D) Decreases exponentially
Description : In extraction, as the temperature increases, the area of heterogeneity (area covered by binodal curve) (A) Decreases (B) Increases (C) Remains unchanged (D) None of these