Description : Most dominant factor influencing weed composition in a field is a). Soil moisture b). Soil type c). Soil texture d). Soil temperature
Last Answer : a). Soil moisture
Description : The most determinant factor of soil which affects the plant growth is a. pH b. Soil composition c. Soil Texture d. Soil moisture
Last Answer : a. pH
Description : High quality crop soil requires humus as a major component. Which of the following best describes the composition of humus w) fine sand particles x) decaying organic matter y) mineral like clay matter z) chemical fertilizers
Last Answer : ANSWER: X -- DECAYING ORGANIC MATTER
Description : With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux (A) Increases (B) Decreases (C) Remain same (D) May increase or decrease; depends on system
Last Answer : (B) Decreases
Description : The reason why materials appear colored is (a) The selective absorption of spectral colors (b) The interaction between the light and the electrons of the dye molecules (c) The composition of the white light from various spectral colors (d) All of these
Last Answer : All of these
Description : What kind of composition did Syed Shamsul Huq write in Nuruldin's whole life ?
Last Answer : Syed Shamsul Haque's play composition of Nuruldin's whole life.
Description : What kind of composition of Shihabuddin Nama Abdul Hakim ?
Last Answer : Shihabuddin Nam Abdul Hakim's poetry.
Description : Bhangar Gaan' What kind of composition by Kazi Nazrul Islam ?
Last Answer : Bhangar Gaan' is a book of poetry written by Kazi Nazrul Islam.
Description : Chandrabindu' What kind of composition by Kazi Nazrul Islam ?
Last Answer : Chandrabindu' is a story written by Kazi Nazrul Islam.
Description : What kind of composition is Shiulimala ?
Last Answer : Shiulimala story writing.
Description : Kheya' What kind of composition by Rabindranath ?
Last Answer : Kheya' is Rabindranath's poem.
Description : Kamalakanter Daftar' What kind of composition ?
Last Answer : Kamalakanter Daftar' is a satirical essay.
Description : What kind of composition is "Padmavati" ?
Last Answer : " Padmavati" is a historical love story.
Description : " Draw" What kind of composition ?
Last Answer : Autobiography of Rekhachitra Abul Fazl
Description : What kind of composition demands the path ?
Last Answer : Novel.
Description : What kind of composition ?
Last Answer : Drama.
Last Answer : A kind of thoughtful composition.
Description : What kind of rocks are rocks in which the structure texture or composition have changed?
Last Answer : Metamophic Rock :)
Description : Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial ... at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1
Last Answer : (C) Azeotropes obey Raoult's law at all temperature
Description : In Dumas’ method for estimation of nitrogen, 0.3g of an organic compound gave 50mL of nitrogen collected at 300K temperature and 715mm pressure. Calculate the percentage composition of nitrogen in the compound. (Aqueous tension at 300K=15 mm).
Last Answer : Volume of nitrogen collected at 300K and 715mm pressure is 50 mL Actual pressure = 715-15 =700 mm Volume of Nitrogen at STP=273*700*50/300*760 =41.9 ml 22400 ml of Nitrogen at STP weighs = 28 g 41.9 ml of Nitrogen weighs = 28*41.9/22400 g % of Nitrogen = 28*41.9*100/22400*0.3 = 17.45 %
Description : The relative saturation of an unsaturated mixture of gas and vapor is independent of the (A) Nature of the vapor (B) Temperature of the mixture (C) Composition of the mixture (D) None of these
Last Answer : (D) None of these
Description : Pick out the wrong statement. (A) Constant pressure distillation cannot separate an Azeotropic mixture (B) Relative volatility of a binary mixture changes appreciably with the minor change in ... unity (D) Flash distillation is practised on wide spread scale in petroleum refinery
Last Answer : (B) Relative volatility of a binary mixture changes appreciably with the minor change in temperature
Description : The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture. (A) Composition (B) Temperature (C) Total pressure (D) All (A), (B) and (C)
Last Answer : (B) Temperature
Description : With increase in temperature, the thermal conductivity of fresh lubricating oil (A) Increases (B) Decreases (C) Remains unchanged (D) May increase or decrease; depends on its composition
Description : The composition of fresh feed to the high temperature, high pressure urea autoclave is (A) Excess liquid ammonia and liquefied CO2 (B) Excess liquid ammonia and compressed CO2 gas (C) Liquid ammonia and excess compressed CO2 (D) Compressed ammonia gas and excess compressed CO2
Last Answer : (B) Excess liquid ammonia and compressed CO2 gas
Description : Pick out the wrong statement. (A) In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time (B) In a semi-batch reactor, ... system (D) In a continuous flow reactor, both the reactants and the products flow out continuously
Last Answer : (C) In a continuous flow reactor, uniform concentration cannot be maintained throughout the vessel even in a well agitated system
Description : Which of the following is a controlling factor in very fast heterogeneous reaction? (A) Heat and mass transfer effects (B) Pressure (C) Temperature (D) Composition of reactant
Last Answer : (A) Heat and mass transfer effects
Description : Pick out the wrong statement. (A) The integral method of analysing kinetic data is used when the data is scattered (B) The differential method of analysing kinetic data requires more accurate ... less than one for identical feed composition, flow rate, conversion and for all positive reaction orders
Last Answer : (C) When the reaction rate is independent of temperature, the reaction is said to be of zero order
Description : Chemical reaction rate of a component depends upon the (A) Composition of the component only (B) Temperature of the system (C) Pressure of the system (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : The rate of a homogeneous reaction is a function of (A) Temperature and pressure only (B) Temperature and composition only (C) Pressure and composition only (D) All temperature, pressure and composition
Last Answer : (D) All temperature, pressure and composition
Description : Rate of an autocatalytic chemical reaction is a function of (A) Temperature only (B) Pressure only (C) Composition only (D) All (A), (B) and (C)
Description : A plug-flow reactor is characterised by (A) High capacity (B) Presence of axial mixing (C) Presence of lateral mixing (D) Constant composition and temperature of reaction mixture
Last Answer : (C) Presence of lateral mixing
Description : . An irreversible aqueous phase reaction, A + B → P, is carried out in an adiabatic mixed flow reactor. A feed containing 4kmole/m3 of each A and B enters the reactor at 8m3 /hr. If the temperature of ... be assumed to be independent of temperature and composition. (A) 190 (B) 290 (C) 390 (D) 490
Last Answer : (B) 290
Description : Variables affecting the rate of homogeneous reactions are (A) Pressure and temperature only (B) Temperature and composition only (C) Pressure and composition only (D) Pressure, temperature and composition
Last Answer : (D) Pressure, temperature and composition
Description : Gibbs-Duhem equation (A) States that n1dμ1 + n2dμ2 + ....njdμj = 0, for a system of definite composition at constant temperature and pressure (B) Applies only to binary systems (C) Finds no application in gas-liquid equilibria involved in distillation (D) None of these
Last Answer : (A) States that n1dμ1 + n2dμ2 + ....njdμj = 0, for a system of definite composition at constant temperature and pressure
Description : In a homogeneous solution, the activity co-efficient of a component depends upon the (A) Pressure (B) Composition (C) Temperature (D) All (A), (B) and (C)
Description : The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the __________ equation. (A) Gibbs-Duhem (B) Van Laar (C) Gibbs-Helmholtz (D) Margules
Last Answer : (A) Gibbs-Duhem
Description : The chemical potential of any constituent of an ideal solution depends on the __________ of the solution. (A) Temperature (B) Pressure (C) Composition (D) All (A), (B) and (C)
Description : When dilute aqueous solutions of two salts are mixed, the process is associated with (A) Decrease in temperature (B) Increase in temperature (C) No change in temperature (D) Change in temperature which is a function of composition
Last Answer : B) Increase in temperature
Description : In a homogeneous solution, the fugacity of a component depends upon the (A) Pressure (B) Composition (C) Temperature (D) All (A), (B) and (C)
Description : A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yiis the liquid activity co- ... and liquid composition xi only (D) Temperature, pressure, liquid composition xi and vapour composition yi
Last Answer : (C) Temperature, pressure and liquid composition xi only
Description : Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure. (A) Fugacity (B) Partial pressure (C) Activity co-efficient (D) All (A), (B), and (C)
Last Answer : (D) All (A), (B), and (C)
Description : The standard Gibbs free energy change of a reaction depends on the equilibrium (A) Pressure (B) Temperature (C) Composition (D) All (A), (B) and (C)
Description : The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of (A) T (B) T and P (C) T, P and Z (D) T and Z
Last Answer : (B) T and P
Description : Diffusion co-efficient of a metal in a solid solution depends upon its (A) Composition (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : Eutectoid composition of carbon steel at room temperature is (A) Cementite (B) Pearlite (C) Martensite (D) Ferrite
Last Answer : Option B
Description : Resistivity of conductors is most affected by (A) composition. (B) temperature. (C) pressure. (D) current.
Last Answer : (B) temperature.
Description : Describe Refractive Index property of solution. Explain its dependence on composition and temperature.
Last Answer : Refractive index: Refractive index of a medium is defines as the ratio of speed of light in vacuum to the speed of light in the medium. Refractive index = (speed of light in vacuum/ speed of ... decreases as the solution is denser and as a result of this refractive index of the solution decreases.
Description : Explain the measurement of Retractive index and it’s dependence on composition and temperature.
Last Answer : Measurement of Refractive Index: The Refractive index of a medium is defined as the ratio of speed of lignt in vacuum to the speed of light in the medium The refractive ... light through the liquid. Thus the refractive index of liquid or solution increases with increasing concentration.
Description : During metamorphonism, changes in the bulk composition of a rock occur primarily as a result of _____? a) Increase in pressure b) Increases in temperature c) Reaction with hydrothermal fluids d) All of these
Last Answer : Increase in pressure