Description : The correct statement(s) pertiaining to the adsorption of a gas on a solid surface is (are)
Last Answer : The correct statement(s) pertiaining to the adsorption of a gas on a solid surface is (are) A. ... it is very slow due to higher energy of activation.
Description : Which of the following is incorrect about heterogeneous catalysis? a. The most effective catalysts are those which have small surface area b. Seperation of catlyst is easy c. Increase in the rate of reaction is due to decrease in the activation energy d. It is based upon the phenomenon of adsorption
Last Answer : a. The most effective catalysts are those which have small surface area
Description : Which of the following is not a chemical step in a fluid solid catalytic reaction? (A) Surface chemical reaction (B) Adsorption (C) Desorption (D) None of these
Last Answer : (D) None of these
Description : Which of the following assumptions of Freunlich adsorption isotherm is incorrect? (a) The constants are temperature dependent (b) It is valid over a range of pressure only (c) Adsorption ... equation is purely an empirical equation (d) The adsorbed molecules may be multimolecular in thickness
Last Answer : (d) The adsorbed molecules may be multimolecular in thickness
Description : Discuss the effect of pressure and temperature on the adsorption of gases on solids
Last Answer : Ans: Effect of pressure : By the increase of temp., extent of adsorption decreases uniformly for physisorption but for chemisorption initially increases then decreases.
Description : Which of the following processes is not an example of adsorption applied to gaseous separations? (A) Recovery of valuable solvent vapors from dilute mixture with air and ... Removal of objectionable odour and impurities from industrial gases (D) Decolouration of yellow glycerine
Last Answer : (D) Decolouration of yellow glycerine
Description : Identify the incorrect statement from the following and correct them. (a) One wants others to change
Last Answer : Identify the incorrect statement from the following and correct them. (a) One wants others to change ... greed. (d) Learning is a finite process.
Description : The following statements relate to the RA 9298. Which statement is true? a. The Professional Regulation Commission has the authority to remove any member of the Board of Accountancy for ... of Accountancy may order the reinstatement of a CPA whose certificate of registration has been revoked.
Last Answer : No person shall be appointed as a member of the Board of Accountancy unless he has been in the practice of accountancy for at least 10 years, among others
Description : The following phrases relate to the definition of auditing. Which one is incorrect? a. Systematic process b. Objectively obtaining and obtaining evidence c. Assertions about economic actions and events d. Degree of correspondence between assertions and GAAS
Last Answer : Degree of correspondence between assertions and GAAS
Description : The following statements relate to CPE credit units. Which is incorrect? a. One credit hour of CPE program, activity or source shall be equivalent to one (1) credit unit. b. Any excess ... carried over to the next three-year period including credit units earned for doctoral and master's degrees.
Last Answer : Excess credit units earned may be carried over to the next three-year period including credit units earned for doctoral and master's degrees.
Description : Explain how the adsorption of gas on solid varies with : a. nature of adsorbate and adsorbent
Last Answer : Explain how the adsorption of gas on solid varies with : a. nature of adsorbate and adsorbent b. surface area of adsorbent
Description : Adsorption is a unit operation which generally involves __________ systems. (A) Liquid-solid (B) Gas-solid (C) Fluid-solid (D) Solid-solid
Last Answer : (C) Fluid-solid
Description : What are the methods of treatment & disposal of radioactive wastes? (A) Evaporation & chemical precipitation (B) Biological methods & adsorption in ion exchange materials (C) Fixing into a solid mass with cement and sinking deep in the sea (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption. (A) Physical (B) Chemical (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (B) Chemical
Description : Which of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure? (A) Langmuir adsorption isotherm (B) Adsorption isobar (C) Freundlich adsorption isotherm (D) None of these
Last Answer : (B) Adsorption isobar
Description : A particular adsorption process has the following characteristics : (i) It arises due to vander Waals forces and (ii) it is reversible. Identify the c
Last Answer : A particular adsorption process has the following characteristics : (i) It arises due to vander Waals ... temperature. D. Energy of activation is low.
Description : Identify the appropriate graph between enthalpy and progress of physical adsorption.
Last Answer : Identify the appropriate graph between enthalpy and progress of physical adsorption. A. B. C. D.
Description : Pick up the incorrect statement from the following: A. Septic tanks are horizontal continuous flow type of sedimentation tanks B. Septic tanks are generally provided a detention period of 12 to 36 hours C ... covered and high vent shafts are provided for the escape of foul gases D. None of these
Last Answer : ANS: D
Description : Pick up the incorrect statement from the following for allowing workers to enter sewers A. The particular manhole and one manhole on upstream and one manhole on downstream should remain open for 30 ... entering the manhole should be advised to smoke in the sewer D. Warning signals should be erected
Last Answer : ANS: C
Description : Pick up the incorrect statement from the following: A. The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion B. Sludge digestion is carried ... contain 75% carbon dioxide D. The gases produced in sludge digestion process, contain 75% methane
Description : Given below are four statements pertaining to separation of DNA fragments using gel electrophoresis. Identify the incorrect statements. (i) DNA is negatively charged molecule and so it is loaded on gel towards the anode terminal. (ii) DNA ... (iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv)
Last Answer : (d) (i), (ii) and (iv)
Description : Adsorpton of gases on solid surface is generally exothermic because :
Last Answer : Adsorpton of gases on solid surface is generally exothermic because : A. enthalpy is positive B. ... C. entropy increases D. free energy increases
Description : The following procedures relate to Skills and Competence, except a. Identify criteria which will be considered in evaluating individual performance and expected proficiency. b. Provide procedures for ... to fill the firm's needs for personnel with expertise in specialized and industries.
Last Answer : Provide procedures for maintaining the firm's standards of quality for the work performed.
Description : Which of the following statement is incorrect? A. The liquid fuels consist of hydrocarbons. B. The liquid fuels have higher calorific value than solid fuels. C. The solid fuels have higher calorific value than liquid fuels. D. A good fuel should have low ignition point.
Last Answer : Answer: C
Description : Identify the incorrect statement :
Last Answer : Identify the incorrect statement : A. Rhombic and monoclinic sulphur have `S_(8)` molecules B. `S_(8)` ring ... `S_(8) and S_(6)` rings are the same
Description : Identify the incorrect statement in connection with working capital management. A. Long-term funds are more expensive than short-term funds but also riskier B. The objectives of ... fluctuating current assets E. Aggressive financing policies increase profitability at the cost of higher risk
Last Answer : A. Long-term funds are more expensive than short-term funds but also riskier
Description : Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) ... (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.
Last Answer : (c) The enzyme binds DNA at specific sites and cuts only one of the two strands.
Description : Identify the incorrect statement. (a) Heartwood does not conduct water but gives mechanical support. (b) Sapwood is involved in conduction of water and minerals from root to leaf. (c) Sapwood is the innermost ... . (d) Due to deposition of tannins, resins, oils, etc., heartwood is dark in colour.
Last Answer : (c) Sapwood is the innermost secondary xylem and is lighter in colour
Description : Identify incorrect statement of Electric vehicle A. Insufficient charging stations B. Long charging period C. Limited range D. High operating cost
Last Answer : D. High operating cost
Description : Read the statements given below and identify the incorrect statement. a) The human genome contains 3164.7 million nucleotide bases. b) The average gene consists of 30,000 bp c) The total number of genes is ... . d) Chromosome Y has 231 genes e) Less than 2% of the genome codes for proteins.
Last Answer : d) Chromosome Y has 231 genes
Description : Identify the INCORRECT statement below regarding chemical equilibrium. A All chemical reactions are, in principle, reversible. B Equilibrium is achieved when the forward reaction rate equals the ... equilibrium constant. E Equilibrium is achieved when reactant and product concentrations are equal.
Last Answer : E Equilibrium is achieved when reactant and product concentrations are equal.
Description : Identify the incorrect statement: (A) A hypothesis is made on the basis of limited evidence as a starting point for further investigations. (B) A hypothesis is a basis for reasoning without ... is a proposed explanation for a phenomenon. (D) Scientific hypothesis is a scientific theory.
Last Answer : (D) Scientific hypothesis is a scientific theory.
Description : Pick out the wrong statement pertaining to the rotary dryer. (A) Flights (located in the inside shell of rotary dryer) lift the material being dried and shower it down through the current of ... D) Recommended peripheral speed of a rotary drier is in the range of 10 to 30 metres/minute
Last Answer : (C) Rotary dryer is suitable for drying sticky materia
Description : Pick out the correct statement. (A) Higher hold up of the solid in the rotary dryer results in better exposure of the solids to the gas (B) The 'Hatta number' is ... reflux in case of distillation operation requires infinite number of plates for a binary system separation
Last Answer : (C) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is linear in the case of steady state equimolal counter-diffusion
Description : Pick out the wrong statement. (A) In drying a solid containing moisture above the critical moisture content the number of degrees of freedom is 2 (B) Sherwood number in mass transfer corresponds to ... tube heat exchangers. At higher pressure, however, it is customary to put gas in the tube side
Last Answer : (C) Forced convection is relatively more effective in increasing the rate of mass transfer, if Schmidt number is larger
Description : Pick out the wrong statement. (A) Cp of monatomic gases such as metallic vapor is about 5 kcal/kg.atom (B) The heat capacity of solid inorganic substance is exactly equal to the ... isolated system (D) At absolute zero temperature, the heat capacity for many pure crystalline substances is zero
Last Answer : (C) There is an increase in entropy, when a spontaneous change occurs in an isolated system
Description : Identify the correct statement with respect to Biogas. (1) Mixture of gases from volcanoes (2) Gas produced from certain crude oil wells (3) Gas produced by incomplete combustion of biomass (4) Gas produced by fermentertian of biomass
Last Answer : (4) Gas produced by fermentertian of biomass Explanation: Biogas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste ... (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
Description : PSA 315 requires that the auditor should obtain an understanding of relevant industry, regulatory and other external factors including the applicable financial reporting framework. Which of the ... Inflation and currency revaluation c. Market and competition d. Cyclical or seasonal activity
Last Answer : Inflation and currency revaluation
Description : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): Because the bonds of adsorbed molecules are broke
Last Answer : Assertion(A): Physical adsorption of molecules on the surface requires activation energy. Reason(R): ... D. If both Assertion & Reason are False.
Description : Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of `"log " (x)/(m)` versus log P gives a straight line with slope equal
Last Answer : Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of `"log " (x ... of pressure. D. Adsorption is independent of pressure.
Description : Adsorption is surface phenomenon. Explain.
Last Answer : Adsorption is surface phenomenon. Explain.
Description : In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is (A) Equal to the heat of formation of surface compound (B) Equal to the heat of wetting (C) Zero (D) Called integral heat of adsorption
Last Answer : (B) Equal to the heat of wetting
Description : In Langmuir treatment of adsorption, (A) Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule (B) Whole surface of ... same mechanism (D) Extent of adsorption is more than one complete monomolecular layer on the surface
Last Answer : (B) Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site
Description : The rate expression for a heterogeneous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR ... R and A) (A) E (B) E + ΔHA (C) E + ΔHA - ΔHR ) (D) ΔHA + ΔHR
Last Answer : (C) E + ΔHA - ΔHR )
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 : The incorrect statement among the following is :-
Last Answer : The incorrect statement among the following is :- A. The first ionisation energy of calcium is more than first ... less than the `IE_(1) of Na^(+)`
Description : Identiity the incorrect statement among the following.
Last Answer : Identiity the incorrect statement among the following. A. (1) `Cl_2` reacts with excess of `NH_3` to ... of air to give `Na_2SiO_3` and `H_2O`.
Description : Select the incorrect statement among the following
Last Answer : Select the incorrect statement among the following A. Benzene undergoes predominant reactions by ... presence of light to give benzyl chloride
Description : Among the following statement the incorrect onr is (IIT -1997)
Last Answer : Among the following statement the incorrect onr is (IIT -1997) A. Calamine and siderite are carbonate ... D. Malachite and azurite are ores of copper