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MCQ on Gas chromatography: Page-3

In open tubular GC columns the outer layer is constructed with
(P) Polyimide(Q) Silica glass(R) Aluminum (S) Plastic

(A) R,S

(B) P,Q

(C) P,R

(D) Q,S

The purpose of derivitization in GC is

(A) To increase the thermal stability of sample

(B) To increase volatility and separation of compounds

(C) To increase the detectability

(D) All of the above

The reactivity of stationary phase can be reduced by
(A) Silanization

(A) P,S

(B) Q,S

(C) P,R

(D) Q,R

Head space analysis id used

(A) To assay volatile components of a solution containing both volatile and non-volatile components

(B) To assay non-volatile components of a solution containing both volatile and non-volatile components

(C) To assay both volatile and non-volatile components of a solution containing both volatile and non-volatile components

(D) To assay volatile components of a solution containing volatile components only

The bleeding of stationary phase can be prevented
Bonding with capillary

(A) P,S

(B) Q,S

(C) P,R

(D) Q,R