Azeotropism for ethyl alcohol-water system disappears by (A) Increasing temperature (B) Decreasing pressure (C) Increasing pressure (D) No means

Azeotropism for ethyl alcohol-water system disappears by
(A) Increasing temperature
(B) Decreasing pressure
(C) Increasing pressure
(D) No means
by

1 Answer

Answer :

(B) Decreasing pressure
by

Related questions

Adiabatic heating and Adiabatic cooling really means _________ and _________ respectively.  a. raising the temp and lowering the temp  b. maintaining the pressure and changing the temperature  c. decreasing the volume and increasing the pressure  d. lowering the temp and raising the temp

Description : Adiabatic heating and Adiabatic cooling really means _________ and _________ respectively.  a. raising the temp and lowering the temp  b. maintaining the pressure and changing the temperature  c. decreasing the volume and increasing the pressure  d. lowering the temp and raising the temp

Last Answer : raising the temp and lowering the temp

The range of a particular Rotameter can be increased by (A) Use of floats of different densities (B) No means (C) Increasing the diameter of the float (D) Decreasing the diameter of the float

Description : The range of a particular Rotameter can be increased by (A) Use of floats of different densities (B) No means (C) Increasing the diameter of the float (D) Decreasing the diameter of the float

Last Answer : (A) Use of floats of different densities

Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by (A) Decreasing the pressure (B) Decreasing the temperature (C) Increasing the temperature (D) None of these

Description : Conversion achieved in HNO3 synthesis with the use of platinum catalyst is about 95-97%. The rate of formation of nitrogen dioxide from the oxidation of nitric acid is favoured by (A) Decreasing the pressure (B) Decreasing the temperature (C) Increasing the temperature (D) None of these

Last Answer : (C) Increasing the temperature

Ice skating is possible and practical because of a unique property of water. Is it because: w) The coefficient of kinetic friction of steel on frozen water decreases with decreasing temperature x) Ice readily sublimes y) The melting point decreases with increasing pressure z) Ice is a good thermal insulator

Description : Ice skating is possible and practical because of a unique property of water. Is it because: w) The coefficient of kinetic friction of steel on frozen water decreases with decreasing temperature x ... sublimes y) The melting point decreases with increasing pressure z) Ice is a good thermal insulator 

Last Answer : ANSWER: Y -- THE MELTING POINT DECREASES WITH INCREASING PRESSURE 

Keeping other parameters constant brake power of diesel engine can be increased by (a) Decreasing the density of intake air (b) Increasing the temperature of intake air (c) Increasing the pressure of intake air (d) Decreasing the pressure of intake air

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Last Answer : Ans : c

A volume of air at constant barometric pressure may be brought to dew point by (A) Increasing the temperature (B) Decreasing the temperature (C) Neither (a) nor (b) (D) Both (a) and (b)

Description : A volume of air at constant barometric pressure may be brought to dew point by (A) Increasing the temperature (B) Decreasing the temperature (C) Neither (a) nor (b) (D) Both (a) and (b)

Last Answer : Answer: Option B

Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by __________ distillation. (A) Atmospheric (B) Vacuum (C) High pressure (D) None of these

Description : Water-ethyl alcohol solution can be concentrated (in respect of alcohol concentration) by __________ distillation. (A) Atmospheric (B) Vacuum (C) High pressure (D) None of these

Last Answer : (B) Vacuum

Pick out the wrong statement. (A) Critical moisture content is not a property of the material itself (B) A sharp increase in pressure drop gives an indication of the flooding in a distillation column (C) Separation of components is not possible in liquid extraction, if selectivity is unity (D) Dehydration of ethyl alcohol is most economically done by molecular distillation at very high vacuum

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Pick out the wrong statement. (A) Caustic embrittlement of boiler's metallic parts is caused by highconcentration of caustic soda in boiler feed water(B) Cooling and freezing of water kills the bacteria present in it(C) With increasing boiler operating pressure of steam, the maximumallowable concentration of silica in feed water goes on decreasing(D) Dissolved oxygen content in high pressure boiler feed water should benil

Description : Pick out the wrong statement. (A) Caustic embrittlement of boiler's metallic parts is caused by highconcentration of caustic soda in boiler feed water (B) Cooling and freezing of water kills the ... goes on decreasing (D) Dissolved oxygen content in high pressure boiler feed water should be nil

Last Answer : (B) Cooling and freezing of water kills the bacteria present in it

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Description : Straight run petrol as compared to methyl/ethyl alcohol has (A) Lower calorific value (B) Lower octane number (C) Higher specific gravity (D) Higher ignition temperature

Last Answer : (B) Lower octane number

The overall mass transfer co-efficient for the absorption of SO2 in air with dilute NaOH solution can be increased substantially by (A) Increasing the gas film co-efficient(B) Increasing the liquid film co-efficient(C) Increasing the total pressure(D) Decreasing the total pressure

Description : The overall mass transfer co-efficient for the absorption of SO2 in air with dilute NaOH solution can be increased substantially by (A) Increasing the gas film co-efficient (B) Increasing the liquid film co-efficient (C) Increasing the total pressure (D) Decreasing the total pressure

Last Answer : (A) Increasing the gas film co-efficient

An example of unsteady non uniform flow is the flow of liquid under pressure through a (A) Tapering pipe at constant flow rate (B) Tapering pipe at either decreasing or increasing flow rate (C) Long pipeline of constant diameter (D) None of these

Description : An example of unsteady non uniform flow is the flow of liquid under pressure through a (A) Tapering pipe at constant flow rate (B) Tapering pipe at either decreasing or increasing flow rate (C) Long pipeline of constant diameter (D) None of these

Last Answer : (B) Tapering pipe at either decreasing or increasing flow rate

Heat transfer co-efficient (h1 ) for liquids increases with (A) Increasing temperature (B) Decreasing temperature (C) Decreasing Reynolds number (D) None of these

Description : Heat transfer co-efficient (h1 ) for liquids increases with (A) Increasing temperature (B) Decreasing temperature (C) Decreasing Reynolds number (D) None of these

Last Answer : (A) Increasing temperature

The film co-efficient between condensing vapour and metal wall increases with (A) Increasing temperature of the vapour (B) Decreasing temperature of the vapour (C) Increasing viscosity of the film of condensate (D) Increasing temperature drop

Description : The film co-efficient between condensing vapour and metal wall increases with (A) Increasing temperature of the vapour (B) Decreasing temperature of the vapour (C) Increasing viscosity of the film of condensate (D) Increasing temperature drop

Last Answer : (A) Increasing temperature of the vapour

Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with (A) Methyl alcohol (B) Ethyl alcohol (C) Methane (D) Ethane

Description : Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with (A) Methyl alcohol (B) Ethyl alcohol (C) Methane (D) Ethane

Last Answer : (A) Methyl alcohol

Pick out the system with minimum boiling azeotrope at 1 atm. (A) Benzene-toluene (B) Ethyl alcohol-water (C) Hydrochloric acid-water (D) All (A), (B) and (C)

Description : Pick out the system with minimum boiling azeotrope at 1 atm. (A) Benzene-toluene (B) Ethyl alcohol-water (C) Hydrochloric acid-water (D) All (A), (B) and (C)

Last Answer : (B) Ethyl alcohol-water

The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C. (A) 768 (B) 908 (C) 1400 (D) 1539

Description : The temperature at which the magnetic property of iron disappears (i.e., it becomes non-magnetic) and its electrical conductivity & specific heat also changes, is called the 'Curie point', which is __________ °C. (A) 768 (B) 908 (C) 1400 (D) 1539

Last Answer : Option A

The advantage of firing porcelain in vacuum:** A. Reduces size of air-bubbles incorporated thus decreasing porosity B. Removes water before firing, increasing the hardness of porcelain C. Significantly lowers firing temperature

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Pick out the wrong statement. (A) DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction (B) Chloral is obtained by the chlorination of ethyl alcohol (C) Insecticides acting on the insects through the respiratory system are called fumigants (D) Benzene hexachloride is not a contact insecticide

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Flat footed camels can walk easily in sandy deserts because - (1) pressure on the sand is decreased by increasing the area of the surface in contact (2) pressure on the sand is increased by increasing the area of the surface in contact (3) pressure on the sand is decreased by decreasing the area of the surface in contact (4) pressure on the sand is increased by decreasing the area of the surface in contact

Description : Flat footed camels can walk easily in sandy deserts because - (1) pressure on the sand is decreased by increasing the area of the surface in contact (2) pressure on the sand is increased by ... in contact (4) pressure on the sand is increased by decreasing the area of the surface in contact

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The increasing vapor pressure caused by heating a liquid is due to------? A. increase inter-molecular interactions B. increasing potential energy of molecules C. increasing kinetic energy of molecules (Answer) D. decreasing surface tension

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Last Answer : ans d

Flat footed camels can walk easily in sandy deserts because (1) pressure on the sand is decreased by increasing the area of the surface in contact (2) pressure on the sand is increased by increasing the area of the surface in contact (3) pressure on the sand is decreased by decreasing the area of the surface in contact (4) pressure on the sand is increased by decreasing the area of the surface in contact

Description : Flat footed camels can walk easily in sandy deserts because (1) pressure on the sand is decreased by increasing the area of the surface in contact (2) pressure on the sand is increased by increasing ... in contact (4) pressure on the sand is increased by decreasing the area of the surface in contact

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Which of the following binary systems is an example of a maximum boiling azeotrope? (A) Water-hydrochloric acid (B) Acetone-carbon disulphide (C) Water-ethyl alcohol (D) n-heptane-n-octane

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Styrene which is a monomer for the production of polystyrene, is commercially produced by the (A) Catalytic dehydrogenation of ethyl benzene (B) Dehydration of ethyl alcohol followed by hydrogenation (C) Reacting ethylene oxide with acetaldehyde (D) Fermentation of starch

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Starting material for the production of SBR is (A) Ethyl alcohol (B) Ethylene (C) Both (A) & (B) (D) Neither (A) nor (B)

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Last Answer : (C) Both (A) & (B)

Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol (C) Ethyl alcohol (D) Phthalic anhydride

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The fermenter used for the production of ethyl alcohol from molasses is made of (A) Wood (B) Concrete (C) Copper bearing steel (D) Porcelain

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Which of the following is not shipped in mild steel containers? (A) Acetone (B) Ammonia (C) Ethyl alcohol (D) Formic acid

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The enzyme which can catalyse the conversion of glucose to ethyl alcohol is (A) Invertase (B) Maltase (C) Diastase (D) Zymase

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Last Answer : (A) 20 - 30

Which of the following is an organometallic compound? (A) Isopropyl alcohol (B) Tetra-ethyl lead (C) Zeolite (D) Cumene

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Liquor poisoning generally occurs due to the presence of __________ in it. (A) Ethyl alcohol (B) Impurities (C) Methyl alcohol (D) Carbonic acid

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Description : . Starting material for the commercial production of ethyl alcohol in India is (A) Rice (B) Molasses (C) Fruit of Mahua tree (D) Maize

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Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol(C) Ethyl alcohol(D) Phthalic anhydride

Description : Starting material for the production of butadiene in India is (A) Naphthalene (B) Benzol (C) Ethyl alcohol (D) Phthalic anhydride

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Last Answer : (C) Steadily decreasing flow through a reducing section

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Description : During size reduction by a jaw crusher, the energy consumed decreases with the (A) Decreasing size of product at constant size of feed (B) Decreasing machine capacity (C) Increasing size of feed at constant reduction ratio (D) None of these

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The falling rate period in the drying of a solid is characterised by (A) Increase in rate of drying (B) Increasing temperatures both on the surface and within the solid (C) Decreasing temperatures (D) None of these

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Description : Air vessel provided in a reciprocating pump is for (A) Increasing the acceleration head (B) Making the friction in pipe uniform (C) Decreasing the acceleration head (D) None of these

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