A chemistry problem by A Former Brilliant Member

Which of these are incorrect ?

1. Sarett reagent is the modified form of collin's reagent because it (collin's reagent) was not suitable for extracting the product formed

2. Corey' regent is a 1:2:1 complex of chromium tri-oxide+pyridine+HCl .

3. quinoline is used as a poison in rosenmund reduction.
4. Clasien condenstion usually results in the formation of $beta$ -keto-ester .
5. Meervein-pondrof verley reduction is considered reverse of Jones oxidation.
6. Indane-1,2,3-trione on hydrogenation gives Hexahydrin.
7. excess propnone with dry HCl gives Phorone in cold conditions .

8. fructose on reduction with sodium amalgum yield sorbitol which suggests the open chain structure of fructose .

9. schiff' base can disturb the equilibrium bewteen open chain and closed ring D-(+)-glucose.

10. albinism is caused by the deficiency of phenylnline.

Enter your answer as the sum of the statements that are not true. If you think statements 2,3 and 5 are not true, enter your answer as $2 + 3 + 5 = 10.$