81. The Ringelmann chart is associated with measurement of:
(a) smoke density
(b) S02 and S03
(c) NO,
(d) CO
(e) dust concentration.
Ans: a
82. The pH value is a measure of hydrogen ionin a solution. The letters pH stand for :
(a) percentage of H2 in solution
(b) power of the hydrogen ion concentra-tion
(c) presence of hydrogen ions
(d) purity of H20
(e) none of the above.
Ans: b
83. The density can be measured using :
(a) weight
(b) buoyancy
(c) hydrostatic head
(d) resonant elements
(e) all of above.
Ans: e
84. Electrode potential is concerned with measurement of:
(a) density
(b) viscosity
(c) chemical analysis
(d) PH
(e) all of above.
Ans: d
85. Almost all pH measurements are best made with a:
(a) glass electrode
(b) solid state electrode
(c) liquid ion exchange electrode
(d) redox electrode
(e) heterogeneous membrane electrode.
Ans: a
86. Pure water has pH value of 7. This means that pure water has :
(a) 7 g of ionized hydrogen per litre
(b) 10 g of ionized hydrogen in/m
(c) 1CT7 % of ionized hydrogen
(d) 10"7 g of ionized hydrogen per litre
(e) none of the above.
Ans: d
87. Which measurement is a good guide to the quality of the water :
(a) conductivity
(b) pH
(c) dissolved 02 content
(d) turbidity
(e) all of the above.
Ans: a
88. The commonly used unit of conductivity is:
(a) mho
(b) mho/m
(c) n mho/cm
(d) ohm/m
(e) m mho/mm.
Ans: c
89. Spectrophotometer is used to :
(a) measure surface hardness
(b) measure surface characteristics
(c) measure chemical composition of al-loys
(d) analyse colour spectrum
(e) analyse gas composition.
Ans: d
90. The change in length of humidity sensitive elements is measured by :
(a) hydrometer
(b) hygrometer
(c) psychrometer
(d) photometer
(e) all of the above.
Ans: b
Read More Questions:
Process Instrumentation and Control - Mechanical Engineering MCQs Part1
Process Instrumentation and Control - Mechanical Engineering MCQs Part2
(a) smoke density
(b) S02 and S03
(c) NO,
(d) CO
(e) dust concentration.
Ans: a
82. The pH value is a measure of hydrogen ionin a solution. The letters pH stand for :
(a) percentage of H2 in solution
(b) power of the hydrogen ion concentra-tion
(c) presence of hydrogen ions
(d) purity of H20
(e) none of the above.
Ans: b
83. The density can be measured using :
(a) weight
(b) buoyancy
(c) hydrostatic head
(d) resonant elements
(e) all of above.
Ans: e
84. Electrode potential is concerned with measurement of:
(a) density
(b) viscosity
(c) chemical analysis
(d) PH
(e) all of above.
Ans: d
85. Almost all pH measurements are best made with a:
(a) glass electrode
(b) solid state electrode
(c) liquid ion exchange electrode
(d) redox electrode
(e) heterogeneous membrane electrode.
Ans: a
86. Pure water has pH value of 7. This means that pure water has :
(a) 7 g of ionized hydrogen per litre
(b) 10 g of ionized hydrogen in/m
(c) 1CT7 % of ionized hydrogen
(d) 10"7 g of ionized hydrogen per litre
(e) none of the above.
Ans: d
87. Which measurement is a good guide to the quality of the water :
(a) conductivity
(b) pH
(c) dissolved 02 content
(d) turbidity
(e) all of the above.
Ans: a
88. The commonly used unit of conductivity is:
(a) mho
(b) mho/m
(c) n mho/cm
(d) ohm/m
(e) m mho/mm.
Ans: c
89. Spectrophotometer is used to :
(a) measure surface hardness
(b) measure surface characteristics
(c) measure chemical composition of al-loys
(d) analyse colour spectrum
(e) analyse gas composition.
Ans: d
90. The change in length of humidity sensitive elements is measured by :
(a) hydrometer
(b) hygrometer
(c) psychrometer
(d) photometer
(e) all of the above.
Ans: b
Read More Questions:
Process Instrumentation and Control - Mechanical Engineering MCQs Part1
Process Instrumentation and Control - Mechanical Engineering MCQs Part2
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