NAT II Biological Science Chemistry With Answers

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NAT II Biological Science Chemistry

Sr. # Questions Answers Choice
1 Cannizzaro reaction is not given by Trimethyl acetaldehyde Acetaldehyde Benzaldehyde Formaldehyde.
2 On heating acetaldehyde with ammonical silver nitrate solution, we get CH<sub>3</sub>OH Silver acetate HCHO Silver mirror
3 Aldehydes are produce in atmosphere by Oxidation of secondary alcohols Reduction of alkenes Reaction of oxygen atoms with hydrocarbons Reaction of oxygen atoms with ozone.
4 Propyne on hydrolysis is presence of H2SO4and HgSO4 gives Acetaldehyde Acetone Formaldehyde None
5 Tollen's reagent is Ammonical cuprous chloride Ammonical cuprous oxide Ammonical silver bromide Ammonical silver nitrate
6 Which of the following reaction is used for detecting presence of carbonyl group? Reaction with hydroxylamine Reaction with hydrazine Reaction with phenyl hydrazine All
7 Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH4or LiAIH4? 1-Propanol 2-Propanol 2-Methyl-2-propanol Ethanol
8 Calcium acetate when dry distilled Formaldehyde Acetaldehyde Acetone Acetic anhydride
9 Isopropyl alcohol on oxidation forms Acetone Ether Ethylene Acetaldehyde
10 Hydrolytic conversion of sucrose into glucose and fructose is known as Induction Inversion Insertion Inhibition
11 Mild oxidation of glycerol with H2O2/FeSO4 gives Glyceraldehyde Dihydroxy acetone Glycerose None
12 Ethanol containing some methanol is called Absolute spirit Rectified spirit Power alcohol Methylated spirit
13 Phenol is heated with CCl4and alkaline KOH when salicylic acid is produced. The reaction is known as Frledel-Craft reaction Riemer-Tiemann's reaction Rosenmund's reaction Sommelet reaction
14 Salol is prepared from Salicyclic acid and phenol Salicyclic acid and methyl alcohol. Both None
15 Maximum number of active hydrogens Acetic acid Glycerol Methane Methanol
16 Dehydration of glycerol give Propane Propene Acrolein Benzene
17 Which of the following cannot be produced by acidic dehydration of alcohols? Ethers Aldehyde Alkyl Hydrogen sulphate Alkene
18 Ethyl alcohol is industrially prepare from ethylene by Permanganate oxidation Catalytic reduction Absorbing in H<sub>2</sub>SO<sub>4</sub>followed by hydrolysis Fermentation
19 Which one is primary alcohol? Buten-2-ol Propan-2-ol Butaon-1-ol 2, 3-Dimethylhexane-4-ol
20 For the carbylamine reaction we need hot alc. KOH and Any amin and chloroform Chloroform and Ag powder A primary amine and chloroform A mono alkyl amine and trichlorom-ethane
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