Self Evaluation Quiz

1. Rf value is 1, then
a. Good Separation occurs
b. No Separation occurs
c. Separation does not depend on Rf
d. None of them


2. Rf value is affected by

a. Polarity of solvent
b. Saturation period of chamber

c. nature of stationary phase
d. All of the above


3. Do impurities affect the Rf values?

a. Yes, always
b. Yes, sometimes

c. No
d. None


4. Embelin is a

a. Alkaloid
b. Quinone

c. Flavanoid
d. None of them


5. Embelin is found in

a. Tamarind
b. Cardamom

c. False black pepper
d. All of above


6. Embelin is found in
a. Kali mirch
b. Green chilly

c. Red chilly
d. Capsicum


7. Embelia ribes belongs to family

a. Myrsinaceae
b. Asteraceae

c. Poaceae
d. None of the above


8. The adjacent quinone and hydroquinone groups on embelin form

a. Intramolecular hydrogen bonds
b. Intermolecular hydrogen bonds

c. Covalent bon
d. Coordinate bond


9. Embelin posses

a. Antimicrobial
b. Analgesic

c. Antioxidant
d. All of the above


10. HPTLC is superior to TLC due to

a. Low maintenance cost
b. Lower analysis time

c. Accuracy & precision of quantification is high.
d. All the above