## Question

###### 41. Which is the tert-butoxy fragment? a.(CH;)CHO- b. (CH3)CCHzO- (CH;CHz)CO- d. (CH;) COCHz- none of thesc42. How many alkynes have the formula CsHs? b. 2 c.3 d. 4 e.543. How many alcohols have the formula C HsO? b. 2 c.3 d. 444.How many ketones have the formula CsH6O? b.2 c.3 d.4

41. Which is the tert-butoxy fragment? a.(CH;)CHO- b. (CH3)CCHzO- (CH;CHz)CO- d. (CH;) COCHz- none of thesc 42. How many alkynes have the formula CsHs? b. 2 c.3 d. 4 e.5 43. How many alcohols have the formula C HsO? b. 2 c.3 d. 4 44.How many ketones have the formula CsH6O? b.2 c.3 d.4

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