Natural Products MCQ

Test your knowledge with important Natural Products MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Natural Products MCQs at Bissoy

• Which of the following statement is wrong regarding Catalytic reformates?
  ক

  They contain no olefins

  খ

  They are resistant to oxidation

  গ

  They have low sulfur and gum content

  ঘ

  They are low in octane number
• Thermodynamically dehydrogenation reactions are favorable at ___________
  ক

  High temperature, low pressure

  খ

  Low temperature, high pressure

  গ

  High temperature, high pressure

  ঘ

  Low temperature, low pressure
• Which of the following is not a distinctive feature of catalytic cracking process?
  ক

  Less polymerization

  খ

  High quality petrol

  গ

  Less coke production

  ঘ

  Less Isomerization
• Increase in pressure during catalytic cracking process ____________ octane number.
  ক

  Decreases

  খ

  Increases

  গ

  Doesn’t effect

  ঘ

  Remains same
• Which catalyst doesn’t have high tolerance towards S when it is reactivated with steam in catalytic cracking process?
  ক

  Iron

  খ

  Chromium

  গ

  Copper

  ঘ

  Nickel
• Which one of the following is a wrong statement?
  ক

  Pressure and temperature requirements are higher for catalytic cracking

  খ

  Rate of polymerization is increased by increasing pressure

  গ

  Thermal pyrolysis of methane and ethane require quenching

  ঘ

  Higher the molecular weight, higher is the coking tendency
• Which of the following relation between driving force and unit operation is correct?
  ক

  Crystallization – relative solubility in different solvents

  খ

  Extraction – relative volatilities

  গ

  Absorption – freezing point difference

  ঘ

  Adsorption – relative adherence
• Which of the following unit operation is based on difference in freezing point?
  ক

  Adsorption

  খ

  Extraction

  গ

  Crystallization

  ঘ

  Distillation
• Which of the following unit operation is based on relative solubility in different solvents?
  ক

  Extraction

  খ

  Adsorption

  গ

  Distillation

  ঘ

  Crystallization
• Which of the following is a by-product of petroleum refining process?
  ক

  Fuel oil

  খ

  Diesel oil

  গ

  Ammonia

  ঘ

  Lubricating oil
• Which residue of petroleum refinery process is used as electrodes?
  ক

  Petroleum coke

  খ

  Ammonia

  গ

  Wax

  ঘ

  Fuel oil
• Which of the following is not produced as heavy distillate in petroleum refinery process?
  ক

  Waxes

  খ

  Frothing oil

  গ

  Lubricating oil

  ঘ

  Petroleum coke
• Residue formed in the petroleum refining is ______________
  ক

  Waxes

  খ

  Asphalt

  গ

  Ammonia

  ঘ

  Gas oil
• Which of the following is not an intermediate distillate product in petroleum refining?
  ক

  Heavy fuel oils

  খ

  Diesel oils

  গ

  Lubricating oil

  ঘ

  Gas oil
• __________________ causes knocking.
  ক

  Low expansion

  খ

  Low compression

  গ

  High expansion

  ঘ

  High compression
• Asphaltenes are soluble in paraffin’s.
  ক

  True

  খ

  False
• Which of the following series comprises the largest fraction of petroleum crude?
  ক

  n-paraffin series

  খ

  Naphthene series

  গ

  Asphalts

  ঘ

  Isoparaffin series
• Which material of construction is used in reactor steels(hydrogenation of coal) to avoid hydrogen embrittlement?
  ক

  Tool steel

  খ

  Chromium-molybdenum steel

  গ

  Stainless steel

  ঘ

  Carbon steel
• The inlet speeds of coal dust and oxygen blown into gasification chamber are _________ than the velocity of flame propagation
  ক

  Higher

  খ

  Lesser

  গ

  Greater than or equal to

  ঘ

  Less than or equal to
• Catalyst used in hydrogenation of coal is ___________________
  ক

  Titanium oxide

  খ

  Chromium oxide

  গ

  Manganese oxide

  ঘ

  Nickel
• Which of the following way is used to fed hydrogenation processes in hydrogenation of coal?
  ক

  Feeding the non powdered coal directly in presence of oxygen

  খ

  By feeding paste of pulverized coal and heavy oil

  গ

  Treating of non powered coal by solvent extraction

  ঘ

  Feeding the non powdered coal directly along with stream of hydrogen
• The gas from the oven in Coking process of coal is scrubbed with H2S04 to remove ammonia. Is the statement true/false?
  ক

  True

  খ

  False
• Which of the following statements regarding coal are correct?
  ক

  Coking coals do not soften on heating

  খ

  Non coking coals soften on heating

  গ

  Coke is an oxidizing agent

  ঘ

  Coal is a hydrogen deficient hydrocarbon
• Coal is a hydrogen rich hydrocarbon. Is the statement true/false?
  ক

  True

  খ

  False
• N2O4 Catalyzed oxidation of Dimethyl sulfide in vapor phase to Dimethyl sulfoxide is an explosive reaction. Is the statement true/false?
  ক

  True

  খ

  False
• What is the molecular weight of Dimethyl sulfoxide?
  ক

  62

  খ

  77

  গ

  70

  ঘ

  78
• Which of the following statements regarding sodium carboxy methyl cellulose are wrong?
  ক

  Sodium carboxy methyl cellulose has high viscosity in dilute solution

  খ

  Sodium carboxy methyl cellulose is used as textile finish

  গ

  Sodium carboxy methyl cellulose is non toxic

  ঘ

  Sodium carboxy methyl cellulose is used as thickener in foods
• Which of the following cellulose ether is used as thickening agent in cosmetics?
  ক

  Ethyl cellulose

  খ

  Benzyl cellulose

  গ

  Methyl cellulose

  ঘ

  Hydroxy ethyl cellulose
• Dimethyl sulfoxide is soluble in water.
  ক

  True

  খ

  False
• Which of the following chemicals are soluble in water or aqueous sodium hydroxide?
  ক

  Ethyl cellulose

  খ

  Acetate

  গ

  Benzyl cellulose

  ঘ

  Methyl cellulose