BIOCHEMISTRY Practical -Carbohydrates- Gr A

Which of the following sugars will not test positive in Molisch's test?

• Triose

• pentose

• ketohexose

• aldohexose

Fructose tests positive in Fehling's test as it is a/an

• ketohexose

• alpha- hydroxy ketohexose

• aldohexose

• pentose

Which one of the following will test negative for Iodine test?

• glycogen

• starch

• cellulose

• amylose

Which of the following should give a positive result for Seliwanoff's test?

• Fructose

• glucose

• starch

• lactose

Fructose and sucrose should give positive results for

• Fehling's test

• Seliwanoff's test

• Molisch's Test

• All of these

Which of the following are termed as reducing sugars?

• aldohexoses

• trioses

• ketohexoses

Which part of starch is responsible for testing positive in Iodine test?

• Amylose

• Amylopectin

Rochelle's salt is used in which of the following solutions?

• Fehling's

• Benedict's

• Seliwanoff's

• Molisch's

What is the role played by sodium- bicarbonate in Benedict's solution?

• Chelate to copper sulfate

• maintain pH

• Supply carbon di oxide to the solution

• As an additive

Copper sulfate is an ingredient of

• Molisch's Reagent

• Benedict's Reagent

• Seliwanoff's reagent

• Iodine solution