Description : Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole. (A) 0 (B) 273 (C) 25 (D) None of these
Last Answer : (A) 0
Description : What will be the molar volume of nitrogen and argon at 273.15 K and 1atm pressure?
Last Answer : Ans. At 273.15K and 1atm pressure every gas has molar volume = 22.4L.
Description : Statement - 1 : Nitriding is the process of heating steel in presence of `N_(2)` to form iron nirides . Statement -2 : The surface of steel becomes ha
Last Answer : Statement - 1 : Nitriding is the process of heating steel in presence of `N_(2)` to form iron ... Statement-1 : is false , statement-2 : is true
Description : A 500 mL glass flask is filled at 298 K and 1 atm, pressure with three diatomic gases, X, Y and Z . The initial volume ratio of the gases before mixin
Last Answer : A 500 mL glass flask is filled at 298 K and 1 atm, pressure with three diatomic gases, X, Y and Z . The ... . `H_2 , F_2 , O_2` D. `O_2,H_2 , F_2`
Description : A cylinder contains oxygen at a pressure of 10 atm and a temperature of 300 K. The volume of the cylinder is 10 liters. What is the mass of the oxygen in grams? Molecular weight (MW) of oxygen is 32 g/mole? a. 125.02 b. 130.08 c. 135.05 d. 120.04
Last Answer : 130.08 {(10atm)(10)(32)/(0.0821) (300K)}
Description : If x gram of gas is adsobed by m gram of adsorbent at pressure P the plot of log `(x)/(m)` versus log P is linear .the slope of the plot is : (n and k
Last Answer : If x gram of gas is adsobed by m gram of adsorbent at pressure P the plot of log `(x)/(m)` versus log P is linear ... 2 k` B. log k C. n D. `(1)/(n)`
Description : Which of the following features is predicted by the Nicolson–Singer fluid mosaic model of biological membranes? (A) Membrane lipids do not diffuse laterally (B) Membrane lipid is primarily in a monolayer form (C) Membrane lipids freely flip-flop (D) Membrane proteins may diffuse laterally
Last Answer : Answer : D
Description : How many standard drinks are there are in the following recipe for Long Island Iced Tea 15ml Vodka 15ml Gin 15ml Rum 15ml Tequila 15ml Orange Liqueur 15ml Bourbon 30ml Lime Juice 15ml Sugar Syrup Spla?
Last Answer : 3
Description : 40.5g divided by 15ml?
Last Answer : density
Description : The temperature of a liquid can be measured in Kelvin units as x K or in Fahrenheit units as y°F. The relation between the two system of measurement of temperature is given by the linear equation y = 9/5 ( x - 273 ) + 32 -Maths 9th
Last Answer : Solution :-
Description : The enthalpy of a reaction at 273 K. is -3.57 KJ. What will be the enthalpy of reaction at 373 K if `DeltaC_(p)` = zero :-
Last Answer : The enthalpy of a reaction at 273 K. is -3.57 KJ. What will be the enthalpy of reaction at 373 K if `DeltaC_ ... C. `-3.57xx(373)/(273)` D. `-375`
Description : `Br_(2)` dissolved in `CS_(2)` reacts with phenol at 273 K to give ..... as the major product
Last Answer : `Br_(2)` dissolved in `CS_(2)` reacts with phenol at 273 K to give ..... as the major ... . m-Bromophenol C. p-Bromophenol D. 2,4,6-Tribromophenol
Description : If a substance has a temperature of 273 kelvins, what is its temperature in degrees Celsius Note: C = K - 273?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want
Description : The boiling point of water, on the Kelvin scale of temperature is-K (a) 100 (b) 273 (c) 373 (d) 212
Last Answer : Ans:(c)
Description : Convert the change of temperature from 20˚C to 30˚C to Kelvin scale. a. 10 K b. 293 K c. 303 K d. 273 K
Last Answer : 10 K
Description : Keeping in view the fluid mosaic model' for the structure of cell membrane, which one of the following statement is correct with respect to the movements of lipids and proteins from one lipid ... ) Both lipids and proteins can flip-flop (d) While lipids can rarely flip-flop, proteins cannot.
Last Answer : (d) While lipids can rarely flip-flop, proteins cannot.
Description : The cell membrane of archaeal cells contains a. A monolayer. b. Sterols. c. Ester linkage d. All of the above (A—C are correct.)
Last Answer : a. A monolayer.
Description : Benzene reacts with H2 at 150°C at 30 atm in the presence of Ni catalyst to give (a) Cyclohexane (b) Cyclohexene (c) n-Hexane (d) No reaction occurs
Last Answer : Cyclohexane
Description : Which adsorbent is used for removing sulphur compounds (S Q, H2S, RSH etc.) removal from coke oven gas in by-products recovery plant? (A) Silica gel (B) Diatomaceous earth (C) Basalt (D) Bog iron (i.e., moist ferric hydroxide)
Last Answer : (D) Bog iron (i.e., moist ferric hydroxide)
Description : Which of the following is an adsorbent for removal of nitrogen oxides from gas/air? (A) Active carbon (B) Silica gel (C) Bog iron (iron oxide) (D) Pulverised limestone
Last Answer : (B) Silica gel
Description : Which of the following is an adsorbent used for the removal of SO2 from gas/air? (A) Bog iron (B) Limestone powder or alkalised alumina (C) Silica gel (D) Active carbon
Last Answer : (B) Limestone powder or alkalised alumina
Description : Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is afunction of reaction temperature. In a chemical reaction, the time required to ... Then the order of this reaction is: (A) 0 (B) 1 (C) 2 (D) 3
Last Answer : (B) 1
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 : 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 : 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 : When sulphur is heated at 800 K, the initial pressure of 1 atm decreases by `20%` at equilibrium `K_(p)` of the reaction `S_(8)(g)rArr4S_(2)(g)` is :-
Last Answer : When sulphur is heated at 800 K, the initial pressure of 1 atm decreases by `20%` at equilibrium `K_(p)` of the ... A. 0.2 B. 0.512 C. 1.51 D. 2
Description : The enthalpy change `(Delta H)` for the reaction `N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)` is `-92.38 kJ` at `298 K`. What is `Delta U` at `298 K`?
Last Answer : The enthalpy change `(Delta H)` for the reaction `N_(2) (g)+3H_(2)(g) rarr 2NH_(3)(g)` is `-92.38 kJ` at ` ... -87.42 kJ` C. `-97.34 kJ` D. `-89.9 kJ`
Description : . Which of the following equations is Rittinger's crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, Ds̅a & D̅sb = volume surface mean diameter of feed & product respectively.) (A) P/m = K/ ... K . ln D̅sa /D̅sb (C) P/m = K . (1/ D̅sb - 1/Ds̅a ) (D) None of these
Last Answer : (C) P/m = K . (1/ D̅sb - 1/Ds̅a )
Description : Helium-mercury method is used for the measurement of the __________ of the catalyst. (A) Surface area (B) Porosity (C) Pore volume (D) Both (B) & (C)
Last Answer : (D) Both (B) & (C)
Description : Which of the following is not a unit of reaction rate? (A) Moles for med/(surface of catalyst) (time) (B) Moles formed/volume of reactor) (time) (C) Mole formed/volume of catalyst) (time) (D) None of these
Last Answer : (D) None of these
Description : . B.E.T. method can be used to determine the __________ of a porous catalyst. (A) Solid density (B) Pore volume (C) Surface area (D) All (A), (B) and (C)
Last Answer : (C) Surface area
Description : Brunauer, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates ... (except the first one) is involved in each of the evaporation process (D) None of these
Last Answer : (B) There is no dynamic equilibrium between successive layer
Description : What volume of oxygen gas `(O_(2))` measured at `0^(@)C` and 1 atm, is needed to burn completely 1L of propane gas `(C_(3)H_(8))` measured under the s
Last Answer : What volume of oxygen gas `(O_(2))` measured at `0^(@)C` and 1 atm, is needed to burn completely 1L of propane gas ... ? A. 5 L B. 10 L C. 7 L D. 6 L
Description : The decomposition of `N_(2)O_(5)` in chloroform was followed by measuring the volume of `O_(2)` gas evolved : `2N_(2)O_(5)(C C_(4))to2N_(2)O_(4)(C Cl_
Last Answer : The decomposition of `N_(2)O_(5)` in chloroform was followed by measuring the volume of `O_(2)` gas evolved : ... log"(90)/(100)` D. `(100)/(10xx500)`
Description : One mole of aniline warmed with the mixture of `NaNO_(2)+HCl`. If we assume 100% yield, volume of `N_(2)` gas liberated at S.T.P is
Last Answer : One mole of aniline warmed with the mixture of `NaNO_(2)+HCl`. If we assume 100% yield, volume of `N_(2)` gas ... 4 L` C. `33.6 L` D. `44.8 L`
Description : Most suitable material for high pressure vessel operating at 500 atm. and 500° C is (A) Molybdenum stainless steel (B) 18/8 stainless steel (C) Mild steel (D) High silicon iron (14% Si)
Last Answer : (A) Molybdenum stainless steel
Description : In nature, ammonia is synthesisd by nitrifying bacteria using enzymes while in industry it is manufactured from `N_(2)` and `H_(2)` using iron oxide c
Last Answer : In nature, ammonia is synthesisd by nitrifying bacteria using enzymes while in industry it is manufactured from ... use nitrates in place of `N_(2)`.
Description : One mole on iron [55.8 gm], when oxidised to `+2` oxidation state gives up :
Last Answer : One mole on iron [55.8 gm], when oxidised to `+2` oxidation state gives up : A. `1N_(A)` electron B ... C. `3N_(A)` electron D. `0.5` mole of electron
Description : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will be
Last Answer : Hydrazine `N_(2)H_(4)` acts as a reducing agent. To prepare 100 ml of 2 N hydrazine solution, the weight required will ... B. 1.6 g C. 3.2 g D. 0.8 g
Description : A trader mixes Ariel detergent costing Rs. 64 per kg with “Surf excel” which costs Rs. 76per kg in the ratio 1:3. If the cost of Surf excel drops to Rs.74 per kg, then in what ratio should he mix the two to leave the cost of mixture unchanged? a) 1:9 b) 1:8 c) 9:1 d) 8:1
Last Answer : a) 1:9
Description : A spherical porous catalyst particle of radius R is subjected to reactant A which reacts to form B by a zero order surface reaction A → B. Film mass transfer resistance is negligible and pore diffusion of A ... (D) Effectiveness factor for a zero order reaction cannot be 7/8 as it must always be 1
Last Answer : (A) Inner catalyst core of radius R/8 does not participate in reaction (
Description : For the process : `H_(2)O (l, 1 atm, 373 K) rArr H_(2)O(g, 1 atm, 373 K)` [Given normal boiling point of water `= 373` K at 1 atm pressure.] The corre
Last Answer : For the process : `H_(2)O (l, 1 atm, 373 K) rArr H_(2)O(g, 1 atm, 373 K)` [Given normal boiling ... lt 0, DeltaU gt 0, Delta H = 0` D. none of these
Description : If a body (coated black) at `600 K` surrounded by atmosphere at `300 K` has cooling rate `r_(0)`, the same body at `900 K`, surrounded by the same atm
Last Answer : If a body (coated black) at `600 K` surrounded by atmosphere at `300 K` has cooling rate `r_(0)`, the same body ... (0)//16` C. `16r_(0)` D. `4r_(0)`
Description : 1.0 molal aqueous solution of an electrolyte `"A"_(2)"B"_(3)` is 60% ionised. The boiling point of the solution at 1 atm is `("K"_("b"("H"_(2)"O"))=0.
Last Answer : 1.0 molal aqueous solution of an electrolyte `"A"_(2)"B"_(3)` is 60% ionised. The boiling point of the solution at ... C. `376. 4 K` D. ` 374 . 76 K`
Description : Identify the product Z in the following sequence of reactions "`phenol" overset(NaOH)rarrX underset(4-7 atm, 410 K)overset(CO_(2))rarrY overset(H_(3)O
Last Answer : Identify the product Z in the following sequence of reactions "`phenol" overset(NaOH)rarrX ... Salicyladehyde C. Benzoic acid D. Salicylic acid
Description : Consider the equilibrium A(g) + B(g) = AB(g). When the partial pressure of A is 10-2 atm, the partial pressure of B is 10-3 atm and the partial pressure of AB is 1 atm, the equilibrium constant 'K' is (A) 10 atm-1 (B) 105 atm-1 (C) 10 (dimensionless) (D) 105 (dimensionless)
Last Answer : Option B
Description : The amount of energy in wheat is: A. 100 K Calories/100 gm B. 245 K Calories /100 gm C. 348 K Calories /100 gm D. 490 K Calories /100 gm
Last Answer : ANSWER: C
Description : 2.6272 mol of Ne is held at 2.0999 atm and 653.33 °C. What is the volume of its container in liters ____ L?
Last Answer : 95.149(Explanation): use ideal gas law in full to solve for volume in liters. Plug in what we know (pressure, number of moles, and gas constant r which is always 0.0821, temperature in kelvin!!) to get ... Now divide both sides by 2.0999 to get V=95.14882035. Round to 5 sig figs to get 95.149