The compounds of saliva are:-
a) Electrolytes $N a^{+}, K^{+} C I^{-}, H C O_{3}^{-}$
b) Amylase
c)Lysozyme

only b

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only b and c

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only a and b

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all a,b and c

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Solution

The correct option is D all a,b and c
An inorganic constituent of saliva includes about 0.2% of NaCI, KCI, acid and alkaline sodium phosphate, CaCO3, calcium phosphate, potassium thiocyanate.
The 0.3 % Organic constituent includes Mucin and the enzymes P tyalin (salivary amylase) lipase, carbonic anhydrase, phosphatase, and a bacteriolytic enzyme.
So, the correct option is 'all a,b and c'.

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$B L i n d r a l / H_{2} \leftarrow ------ - R - C \equiv C - R N a / N H_{3} - ---- \to$ A and B are geometrical isomers (R - CH = CH - R):

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