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MCQs

Total Questions : 3103 | Page 11 of 311 pages
Question 101. Sucrose content in cane sugar may be around __________ percent.
  1.    50
  2.    70
  3.    80
  4.    95
 Discuss Question
Answer: Option D. -> 95
Question 102. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
  1.    Its calorific value is very less
  2.    Tar neutralises the residual acids present in pitch
  3.    It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
  4.    All of the above
 Discuss Question
Answer: Option C. -> It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
Question 103. Percentage of alcohol in beer may be around __________ percent.
  1.    2-8
  2.    18-23
  3.    27-32
  4.    1-4
 Discuss Question
Answer: Option A. -> 2-8
Question 104. Aryl benzene sulphonate (ABS) is a
  1.    Detergent
  2.    Plasticiser for unsaturated polyester
  3.    Starting material for the synthesis of glycerine
  4.    Coating ingredient for photographic film
 Discuss Question
Answer: Option A. -> Detergent
Question 105. Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
  1.    Sodium silicate
  2.    Sodium borate
  3.    Sodium tripolyphosphate (STPP)
  4.    Caustic soda
 Discuss Question
Answer: Option B. -> Sodium borate
Question 106. The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
  1.    Dilute H₂SO₄
  2.    Oleum
  3.    Ultraviolet light
  4.    None of these
 Discuss Question
Answer: Option B. -> Oleum
Question 107. Which of the following is not produced commercially from sea water?
  1.    Magnesium & potassium compounds
  2.    Common salt
  3.    Bromine
  4.    Iodine
 Discuss Question
Answer: Option D. -> Iodine
Question 108. Dacron (or terylene) fibres as compared to nylon's fibres have
  1.    Better heat & acid resistant properties
  2.    Poorer resistance to alkalis
  3.    Poorer dyeability
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 109. In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst
  1.    Gives higher conversion efficiency
  2.    Has a longer life and is not poisoned by arsenic
  3.    Handles lower SO₂ content gas (7 -10% SO₂), thus increasing the capital cost of the plant
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 110. Which of the following contains least amount of N₂?
  1.    Coke oven gas
  2.    Blast furnace gas
  3.    Producer gas
  4.    Water gas (blue gas)
 Discuss Question
Answer: Option A. -> Coke oven gas

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