MCQ Pharmacognosy UNIT - I (TEST - 10)

 

PHARMACOGNOSY / P' Analysis 

 MCQ (TEST 10)  

MULTIPLE CHOICE QUESTIONS

S. Y. B.PHARM (UNIT-I) SEM-IV AS PER PCI SYLLABUS

1. In gel permeation chromatography molecules are separated on the basis of their (GATE 1995)

  A) Chemical nature  
B) Adsorptive properties
C) Size and shape
D) Partition coefficient

... Answer is C)
In gel permeation chromatography molecules are separated on the basis of their Size and shape "

2. Gas chromatography techniques can be used for (GATE 1998)

A) Qualitative analysis only
B) Quantitative analysis only
C) Both A and B
D) None of these

... Answer is C)
Gas chromatography techniques can be used for Both A and B .

3. Derivatization techniques in HPLC are intended to enhance (GATE 2004)

A) Molecular weight
B) Reversibility
C) Detectability
D) Reproducibility

... Answer is C)
Derivatization techniques in HPLC are intended to enhance Detectability

4. Choose the correct semi-rigid gel used for exclusion chromatography- (GATE 2000)

A) Sephadex
B) Cellulose
C) Gelatin
D) Alumina

... Answer is A)
Choose the correct semi-rigid gel used for exclusion chromatography Sephadex "

5. In HPLC, the analytical performance improves when -(GATE 2007)

A) Particle diameter in increased
B) Particle diameter is reduced
C) Coarser particles are paired with shorter columns
D) Low temperature is used

... Answer is B)
In HPLC, the analytical performance improves when Particle diameter is reduced. .

6. Silica gel used in most of adsorbent columns contains-OH group. So it is : (GATE 2005) .

A) Basic
B) Neutral
C) Acidic
D) Both acidic and basic

... Answer is C)
Silica gel used in most of adsorbent columns contains-OH group. So it is Acidic .

7. What is the nature of mobile phase in reverse phase chromatography?(NIPER M. PHARM 2004)

A) Polar
B) Non polar
C) Mixture of both
D) Can be any it depends on the nature of analyte

... Answer is A)
Polar

8. Partition Chromatograph is known as : (NIPER M. PHARM 2004)

A) Solid-liquid
B) Gas-liquid
C) Liquid-liquid
D) None of these

... Answer is C)
Partition Chromatograph is known as Liquid-liquid

9. Solvent programming, also called gradient elution, involves :- (GATE 2007)

A) Changing the column length
B) Using the mobile phase composition
C) Successive injection of sample
D) Changing the mobile phase composition

... Answer is D)
Solvent programming, also called gradient elution, involves Changing the mobile phase composition. .

10.Ion exchange capacity of a resin is dependent on :- (GATE 2002)

A) the total molecular weight of the resin
B) length of the ion exchange resin
C) the total number of ion active groups
D) solubility of the ion exchange resins

... Answer is C)
Ion exchange capacity of a resin is dependent on the total number of ion active groups "