74.

75.

76.

77.

78.

79.

80.

Tyndall effect is displayed by __ ___ when a beam of light is passed through it.
(^) Buffers (B) Colloids
(C) Suspensions (D) Saturated salt solutions

In column chromatography, isocratic elution refers to :
(A) Solvent system under high pressure

(B) Solvent system with varying polarity

(C) Solvent system with negative pressure

(D) Solvent system with constant polarity

Separation of amino acids by Silica gel thin layer chromatography is based on :
(A) Molecular size of amino acids

(B) Interaction of amino group of amino acids with stationary phase

(C) Interaction of R-group of amino acids with stationary phase

(D) Molecular charge of individual amino acids

Among the following, identify a protocol not complying with good practices in a clinical

biochemistry laboratory.

(A) Protocols can be amended by the personnel at their discretion.

(B) A record of all approved protocols must be maintained in the laboratory.

(C) A record of the qualification of all personnel involved in the laboratory is
maintained.

(D) Periodic auditing of the facility must be carried out.

What is not an advantage of an autoanalyzer in a clinical laboratory ?
(A) More accurate than manual methods.

(B) Higher sample turnover.

(C) Versatility in handling multiple assays simultaneously.

(D) None of these.

Identify the main benefit of adopting laboratory informatics in a clinical laboratory.
(A) Job creation for information technologists.

(B) Makes daily laboratory management less user friendly.

(C) Databases help in result recording, retrieval, and analysis.

(D) Open to data manipulation.

Analytical variables can arise from which of the following factors ?
(A) Relaxed quality control of equipments involved.

(B) Poor standard operating procedures.

(C) Lack of rigorous controls in sample collection.

(D) All of these.

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