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All of the following are properties of water except……
a) generally a good solvent    
b) maximum density at 0°C
c) high specific heat                           
d) molecules exhibit polarity

b

When water ionizes, it produces equal amounts of hydrogen and hydroxide ions, which can re-associate with other. Water is thus a/an…….
a) base
b) acid
c) buffer         
d) base and an acid (amphoteric)

d

When water ionizes, it produces equal amounts of hydrogen and hydroxide ions, which can re-associate with other. Water is thus a/an…….
a) base
b) acid
c) buffer         
d) base and an acid (amphoteric)

d

Carbohydrates:


Carbohydrates are polyhydroxy……..
a) aldehyde                
b) ketone
c) both a and b         
d) none of them

c

Explanation: or substances which yield such compounds on hydrolysis



Which of the following biomolecules are the most abundant in nature?
a) carbohydrates       
b) lipids
c) nucleic acids          
d) proteins

a

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