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Correct choice is (b) P-tertiary catechol

The best I can EXPLAIN: The styrene which was stabilized with p-tertiary catechol is vacuumed DISTILLED to remove TRACES of tar and Sulphur. The final overhead is refrigerated at 10 degree Celsius.

The correct option is (a) 131.5

The explanation is: MOLECULAR FORMULA of tri chloro ETHYLENE is ClHC=CCl2. As it CONTAINS 3 chlorine atoms, 2 carbon atoms, and 1 hydrogen atom the molecular weight is 35.5*3+12*2+1*1=131.5.

Correct choice is (b) Methyl CHLORIDE

For EXPLANATION: Methyl chloride is soluble in water whereas Methylene chloride, chloroform, and carbon tetra chloride are miscible with ALCOHOLS and ethers and slightly soluble in water.

The CORRECT ANSWER is (b) 2.25

To elaborate: Mole ratio of hydrogen to carbon DIOXIDE is 2.25. The PRESENCE of excess hydrogen is to prevent catalyst fouling with HIGH molecular weight compounds that adsorbs on catalyst.

The correct ANSWER is (a) High pressure

The best I can EXPLAIN: Designing a high-pressure reactor is the most DIFFICULT PART in manufacturing methanol. To WITHSTAND high pressure thick reactor walls are necessary.

The CORRECT option is (a) TRUE

To explain I would SAY: The statement is true as LPG extracted from natural gas contains BUTANE and propane which can be cracked into olefins. LPG can be transported in pipelines as liquid.

Correct choice is (b) False

Easiest explanation: Alkylation OPERATION must be done under very dry CONDITIONS with high purity FEED stock to avoid activity loss of the catalyst. All BENZENE feed must be dry by azeotropic distillation.

Correct CHOICE is (a) Molybdenum-bismuth

The BEST EXPLANATION: Molybdenum-bismuth is used because it has excellent attrition resistance. ALSO, it provides more than an ADSORPTIVE surface in furnishing oxygen by surface reaction and transfer.

The correct choice is (b) CARBON PELLETS

To ELABORATE: Carbon pellets IMPREGNATED on mercurous chloride is used as catalyst in acetylene-HCl reaction. Temperature is maintained at 160°C and it increases as catalyst deteriorates.

Right CHOICE is (b) USING HIGH benzene and propylene feed

The explanation is: Minimization of polyalkylbenzene is possible by using high benzene and propylene feed around 5:1 RATIO or even higher and the propane dilution method.

The correct answer is (d) From MICROORGANISMS

For explanation: Ethanol cannot be DERIVED from microorganisms. The most WIDELY used method for the manufacture of ethanol is from fermentation of MOLASSES.

The correct answer is (b) Oxygen

To elaborate: SIDE reaction products of catalytic hydrogenation of CARBON monoxide to PRODUCE methanol are carbon dioxide, water, methane, and high molecular WEIGHT compounds.

The correct choice is (d) FIXED bed reactor

To elaborate: Ethylene and oxygen are COMPRESSED and sent into a TUBULAR fixed bed reactor since it is highly exothermic reaction ALONG with catalyst and suppressing agent.

Right CHOICE is (a) CHARCOAL

To explain I would say: Charcoal or PUMICE is used as contact surface catalyst within the tubes in tubular cracking furnace. 50% CONVERSION and 95-96% yield are obtained.

The correct choice is (c) Silica gel

For explanation I WOULD say: Silica gel (desiccant) is the reagent used to dry ethylene dichloride, which on UNDERGOING thermal pyrolysis produces vinyl chloride ALONG with HYDROCHLORIC acid.

Right answer is (a) Carbon ELECTRODE furnace

To explain I would say: Carbon electrode furnace is used in PYROLYSIS of carbon tetra CHLORIDE. Pyrolysis PRODUCTS are hexa chloro ethane, per chloro ETHYLENE, and chlorine along with unreacted carbon tetra chloride.

Right choice is (a) Benzene+chlorine

Explanation: The RAW materials for BHC manufacture are benzene and chlorine. ETHANOL and benzene are used for the manufacture of DDT.

The CORRECT answer is (a) True

Easiest explanation: A longer contact time of 10 SECONDS in a fluid bed catalytic reactor yields better product than a contact time of 0.1 – 0.4 seconds in a fixed bed multi tubular reactor. The yields are equivalent and almost no maleic ACID if PRODUCED, thus giving very HIGH purity phthalic anhydride product.

Correct OPTION is (a) Propylene-ammonia-air oxidation process

Best explanation: A C3 REFINERY is introduced along with ammonia and air VIA sprangers into a fluidized bed catalytic reactor. Acetone is MANUFACTURED by Catalytic dehydrogenation of isopropanol. CUMENE is manufactured by propylene alkylation of benzene. Contact process is to produce sulfuric acid.

Correct option is (a) True

The best I can explain: A mixture of AIR and isopropanol vapour is passed through a catalyst USUALLY SILVER at 400°C. This method can be USED as an alternative to the common method as it produces a better yield.

The correct choice is (d) 3-4atm

For explanation: The reaction is FAVOURED at low pressure to reduce reactor SIZE and WATER circulation load for a GIVEN PLANT capacity.

Correct choice is (b) True

For explanation: Ammonolysis is an EXOTHERMIC reaction, so heat must be removed from the reactor in the PRODUCTION process of ethanol amines from ETHYLENE oxide and AMMONIA (aqueous).

Right answer is (d) Scrubber

For explanation I would say: Acetaldehyde manufacturing process CONTAINS a compressor, reactor, cyclone separator, PRODUCT separator, stripper, 2 pumps, REGENERATOR, and cyclone separator.

Right option is (d) 5.1atm

To EXPLAIN: Liquid CO2 can be manufactured only if the pressure is above 5.1 ATM SINCE triple point of CO2 exists only at pressure of 5.1atm. Triple phase of a SUBSTANCE is TEMPERATURE and pressure at which all three phases of the substance coexist.

Right answer is (a) True

Best explanation: Benzene and CHLORINE are PASSED into a cooled REACTOR containing a light well or through a tubular reactor with fluorescent lamp mounted on the axis in a protective TUBE.

Right answer is (C) ACID type catalyst

Best explanation: Isomerization occurs in a packed bed reactor CONTAINING an acid type catalyst. Process CONDITIONS range from 150-300 ° with liquid VELOCITY of 15 to .5 m/s.

Right choice is (a) False

The explanation is: Tri ethanol AMINE is available in technical GRADE with 80% purity (mono and DI ethanol amines as impurities). 98% high purity grade is also available.

Right answer is (a) True

The EXPLANATION is: This chemical reaction is one of the few commercialized where three reactants and a solid catalytic surface are all necessary involved in producing only a SINGLE MAJOR product.

Right option is (b) Water

For explanation: VINYL chloride with molecular weight 62.5 is SLIGHTLY soluble in water but it is soluble in diethyl ether, carbon tetra chloride, and alcohols. It is available in POLYMER GRADE (99% pure).

The correct option is (C) HYDROGEN steam cracking

The BEST explanation: Thermal pyrolysis of ethane is not a feasible method for producing ethylene. Acetylene can be obtained from CALCIUM carbide and partial OXIDATION of petroleum fractions. Hydrogen steam cracking produces both ethylene and acetylene.

The correct answer is (b) False

For EXPLANATION I would say: Per chloro ethylene is SLIGHTLY soluble in water and it is not miscible with water. It is miscible with ETHERS and ALCOHOLS. It is available in technical grade form only.

The correct answer is (a) True

For EXPLANATION: Isoprene can be polymerized with a stereospecific CATALYST and a range of cis-4-polybutadiene-polyisoprene elastomer BENDS can be MANUFACTURED.

Right choice is (d) Tripropyl aluminium

Explanation: A compressed propylene is reacted with tripropyl aluminium CATALYST ALONG with a carrier solvent at 200atms pressure in a reactor FILLED with heat transfer SURFACE to remove exothermic heat of reaction.

Correct answer is (c) Palladium (II) chloride

Explanation: In Wacker’s process ETHYLENE is oxidized to acetaldehyde which is finally oxidized to acetone in the presence of catalyst (Palladium (II) chloride.) This reaction is CONSIDERED as the first homogeneous catalysis with organopalladium CHEMISTRY applied.

Correct answer is (d) 99%

The EXPLANATION is: Acetone produced is 99% PURE with 90% YIELD. Fractionalization increases the PURITY of acetone.

Correct choice is (B) Isopropyl ether

Explanation: In the MANUFACTURE of isopropanol propylene is SULPHATED to produce isopropyl acid sulphate which on HYDROLYSIS PRODUCES diiospropyl sulphate which finally produces isopropyl ether as a by-product.

Correct answer is (a) 86

Easiest explanation: Chemical formula of vinyl acetate is CH3COOCH=CH2. It contains 4 carbon atoms, 6 hydrogen atoms, and 2 oxygen atoms with 12, 1, and 16 as their ATOMIC weights respectively. HENCE the molecular WEIGHT is 12*4+1*6+16*2 = 86.

Correct answer is (d) Ammonium SULPHATE + MAGNESIUM sulphate + Phosphorous

The EXPLANATION: Nutrients such as Ammonium sulphate, Magnesium sulphate and Phosphorous are added to molasses to support the YEAST GROWTH.

The correct answer is (d) Nitric ACID

The explanation: Synthetic ETHANOL is PREPARED by HYDRATION of ethylene with phosphoric acid on celite catalyst.82% of ethanol produced is however manufactured using corn fermentation.

Correct option is (B) Molten SALT

The explanation is: The exothermic HEAT of reaction is removed from the outside of the tubes by a molten salt circulating system. The condition for OXIDATION within the converter is 380 DEGREE Celsius.

The CORRECT answer is (b) Methane CHLORINATION is an endothermic reaction

Easiest explanation: Methane chlorination is an exothermic reaction; hence it is a wrong statement. The HEAT evolved is RECOVERED and used for PREHEATING the inlet gas.