NAT II Biological Science Chemistry With Answers

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NAT II Biological Science Chemistry

Sr. # Questions Answers Choice
1 Enzymes are Proteins Minerals Oils Fatty acids
2 Which of the following is not present in RNA? Uracil Thymine Ribose Phosphate
3 The main structure features of proteins is An ester linkage An ether linkage The peptide linkage All
4 Vitamin A is present in Liver Milk Green vegetables All
5 Which of the following as a molecular diseaes? Allergy Cancer German measles Sickle cell anemia
6 Which has maximum protein content? Ground nut Cow milk Egg Wheat
7 Ascorbic acid is chemical name of Vitamin D Vitamin A Vitamin C Vitamin B6
8 The digestion of fats in the intestines is aided by Diffusion Protection Peptization Emulsification
9 The reagent which forms crystalline osazone derivation when treated with glucose is Fehling solution Phenyl hydrazine Benedict solution Hydroxyl amine
10 Given below are some statements concerning formic acid, which of them is true? It is a weaker acid than acetic it is a reducing agent When its calcium salt is heated, it forms a ketone It is an oxidizing agent
11 Formic acid is obtained when Calcium acetate is heated with conc. H<sub>2</sub>SO<sub>4</sub> Calcium formate is heated with calcium acetate Glycerol is heated with oxalic acid Acetaldehyde is oxidized with K2Cr<sub>2</sub>O<sub>7</sub> and H<sub>2</sub>SO<sub>4</sub>
12 Sulphonation of benzoic acid produces mainly o-Sulphobenzoic acid m-Sulphobenzoic acid p-Sulphobenzoic acid o- and p-Sulphobenzoic acid
13 Heating a mixture of sodium benzoate and soda lime gives Methane Benzene Sodium benzoate Calcium benzoate
14 Toluene can be oxidized to benzoic acid by KMnO<sub>4</sub>(alk) K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub>(acidic) Both None
15 Reaction of acids with alcohols is also known as Esterification Saponification Alkalization None
16 Acetic anhydride is obtained from acetyl chloride by the reaction of P<sub>2</sub>O<sub>5</sub> H<sub>2</sub>SO<sub>4</sub> CH<sub>3</sub>COONa CH<sub>3</sub>COCH<sub>3</sub>
17 In public urinals, we observe some nascent smell. This smell is due to Hydrolysis of urea of urine by urease of atmosphere into NH<sub>3 </sub>and CO<sub>2</sub> Formation of sulphonic acid by urea of urine Reaction of CO<sub>2</sub>of atmosphere with urea mononitrate in urine Hydregen present in air reacts with nitrogen forming NH<sub>3</sub>
18 Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh4or LiAH4? 1-Propanol 2-Propanol 2-Methyl2-Proponal Ethanol.
19 Calcium acetate when dry distilled gives Formaldehyde Acetaldehyde Acetone Acetic anhydride
20 At room temperature formaldehyde is Gas Liquid Solid None of the above
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