28.Select the number of statements identical between Glucose and fructose from the following. 1.They can exist as cyclic forms in mild acidic medium. 2.They have different molecular formulae. 3.They are reducing sugars with Tollens reagent. 4.They Equally sweet on taste. 5.They show Mutarotation. 6.They form same osazone. 7.They are water soluble. 8.Insoluble in ether.

How many of the following statements are correct for green vitriol? 1. it can be used for the preparation of Mohr's salt. 2. It is a hydrated salt and its anhydrous form is white in colour. 3. The decomposition reaction of its anhydrous form is redox in nature. 4. It is used for making fenton's reagent used as a catalyst in organic chemistry. 5. It can be used for the preparation of Potassium ferrocynide. 6. It has same number of molcules of water of crystallization as white vitriol or blue vitriol 7. It turns brownish-yellow on exposure to atmosphere. 8. Its aqueous solution is acidic in natrue due to hydrolysis. 9. Out of the decomposition products of its anhydrous form, only one can turn acidified K_(2)Cr_(2)O_(7) solution green.

Five isomeric p-subsituted aromatic compounds (A) to (E ) with molecular formula C_(8)H_(8)O_(2) are given for identifyication. Based on the following observation, give the structures of the compounds. i. Both (A) and (B) form a silver mirror with Tollens reagent, (B) also gives a positive test with neutral FeCl_(3) solution. ii. (C ) gives positive iodoform test. iii. (D) is readily extracted in aqueous NaHCO_(3) solution. iv. (E ) on acid hydrolysis gives 1,4-dihydroxy benzene. Compound (A) is:

Select from the letters A to G the correct answer corresponding to the statements from 1 to 5: A: Ammoniacal CuCl_2 , B: Trichloromethane, C: Trichloroethane, D: Bromine soln., E: Aqueous KOH F: Ethene, G: Sodalime, H: Ethanol, I: Ethyne. 1. The organic compound which forms carbon tetrachloride on reaction with chlorine. 2. The reagent which can distinguish between ethene and ethyne. 3. The substance which reacts with bromoethane to give ethanol. 4. The substance which gives bromoethane on reaction with hydrogen bromide. 5. The substance which reacts with acetic acid to give CH_3COOC_2H_5 .

Five isomeric p-subsituted aromatic compounds (A) to (E ) with molecular formula C_(8)H_(8)O_(2) are given for identifyication. Based on the following observition, give the strucctures of the compounds. i. Both (A) and (B) form a silver mirror with Tollens reagent, (B) also gives a positive test with neutral FeCl_(3) solution. ii. (C ) gives positive iodoform test. iii. (D) is readily extracted in aqueous NaHCO_(3) solution. iv. (E ) on acid hydrolysis gives 1,4-dihydroxy benzene. Compound (D) is:

Five isomeric p-subsituted aromatic compounds (A) to (E ) with molecular formula C_(8)H_(8)O_(2) are given for identifyication. Based on the following observition, give the strucctures of the compounds. i. Both (A) and (B) form a silver mirror with Tollens reagent, (B) also gives a positive test with neutral FeCl_(3) solution. ii. (C ) gives positive iodoform test. iii. (D) is readily extracted in aqueous NaHCO_(3) solution. iv. (E ) on acid hydrolysis gives 1,4-dihydroxy benzene. Compound (E ) is:

Five isomeric p-subsituted aromatic compounds (A) to (E ) with molecular formula C_(8)H_(8)O_(2) are given for identifyication. Based on the following observition, give the strucctures of the compounds. i. Both (A) and (B) form a silver mirror with Tollens reagent, (B) also gives a positive test with neutral FeCl_(3) solution. ii. (C ) gives positive iodoform test. iii. (D) is readily extracted in aqueous NaHCO_(3) solution. iv. (E ) on acid hydrolysis gives 1,4-dihydroxy benzene. Compound (C ) is:

Five isomeric p-subsituted aromatic compounds (A) to (E ) with molecular formula C_(8)H_(8)O_(2) are given for identifyication. Based on the following observition, give the strucctures of the compounds. i. Both (A) and (B) form a silver mirror with Tollens reagent, (B) also gives a positive test with neutral FeCl_(3) solution. ii. (C ) gives positive iodoform test. iii. (D) is readily extracted in aqueous NaHCO_(3) solution. iv. (E ) on acid hydrolysis gives 1,4-dihydroxy benzene. Compound (B) is: