Laboratory size sample is obtained from ___________
A. Population or whole
B. Composite sample
C. Gross sample
D. Integrated sample
Answer: C
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For More Quiz Questions click here to download Global Quiz on Google PlayStore
Gross sample is obtained from ___________.
A. Composite sample
B. Population or whole
C. Integrated sample
D. Environment
Answer: B
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The change in colour of an indicator used in volumetric analysis is due to ____________________ .
A. Change in the current between a pair of electrodes
B. Change of pH in the titration of an acid with a base
C. Complete consumption of analyte near the equivalence point whose concentration is known
D. End point of the titration reaction
Answer: C
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Which sample consist of mixture of grab samples collected from different points simultaneously or as nearly so as possible.
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A certain portion of a whole that is removed through any of the sampling methods, which correspond to the whole lot both in chemical composition and in particle size distribution is known as ___________ .
A. Laboratory size sample
B. Composite sample
C. Integrated sample
D. Gross sample
Answer: D
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____________ consists of a collection of numerous individual discrete samples taken at a regular intervals over a period of time, thus representing sampling of heterogeneous matrices in which the composition of the analyte of interest may vary over a period of time or space.
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Which of the following options is suitable when the source of a sample is known to vary with time or when source composition varies in space
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Depth integrated samples are _______________.
A. Samples collected over a predetermined part of an area with respect to location and time
B. Samples taken at selected locations depth over a short period of time
C. Samples collected over a predetermined part or to entire depth of an area with respect to location and time
D. Snap samples
Answer: C
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Discrete grab samples are _______________.
A. Samples taken at a selected location depth and time
B. Single samples taken at a selected location depth and time
C. Snap samples
D. Samples taken at selected locations depth over a short period of time
Answer: A
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Grab samples are ___________.
A. Samples collected at specific spot at a site over a short period of time
B. Single samples collected at more than one specific spot at a site over a short period of time
C. Samples collected at more than one specific spot at a site over a short period of time
D. Single samples collected at specific spot at a site over a short period of time
Answer: D
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For More Quiz Questions click here to download Global Quiz on Google PlayStore
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