InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
Name a protein which act as a carrier. |
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Answer» Haemoglobin. |
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| 1202. |
Which of the following is not a sex hormone?A. testosteroneB. estroneC. estradiolD. cortisone |
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Answer» Correct Answer - D Cortisone is not sex harmone |
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| 1203. |
The enzyme present in saliva is |
| Answer» Ptyalin or salivary amylase | |
| 1204. |
Name the enzyme present in the saliva. |
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Answer» Salivary amylase or ptyalin. |
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| 1205. |
Saliva helps in the digestion ofA. fatsB. starchC. proteinsD. vitamins |
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Answer» Correct Answer - B Saliva helps in the digestion of starch . |
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| 1206. |
Which of the following hormone is a sex hormone?A. adrenalineB. thyroxineC. testeroneD. insulin |
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Answer» Correct Answer - C Testosterone is male sex hormone. |
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| 1207. |
RNA is different from DNA because RNA containsA. ribose sugar and thymineB. ribose sugar and uracilC. deoxyribose sugar and thymineD. deoxyribose sugar and uracil |
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Answer» Correct Answer - B RNA has ribose (as sugar) and uracil (a pyrimidine base). DNA has deoxyribose (as sugar) and does not contain uracil. Instead it contains thymine (as a pyrimidine base). |
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| 1208. |
Iodine value is related toA. fats and oilsB. alcoholsC. estersD. hydrocarbons |
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Answer» Correct Answer - A Iodine value is related to oil and fats. Iodine value measures the drying quality of an oil. More the unsaturation better is the drying quality of an oil. When an oil is treated with `I_(2)`, it adds to the double bond . Iodine value is defined as the number of centigrams of `I_(2)` that can be taken by 1 g of the oil. |
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| 1209. |
Which is fightand flight organ?A. AderinalB. thyroidC. pituitaryD. kidney |
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Answer» Correct Answer - B Thyroid is a fight and flight organ. |
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| 1210. |
The functional group, which is found in amino acid isA. `-CO OH` groupB. `-NH_(2)`C. `-CH_(3)` groupD. Both (A) and (B) |
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Answer» Correct Answer - D Amino acids has `-NH_(2)` and `-CO OH` as the functional groups. |
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| 1211. |
Which of the following does not contain metallic elements:A. Vitamin `B_(12)`B. chlorphyllC. haemoglobinD. ATP |
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Answer» Correct Answer - D ATP does not contain any metallic element. |
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| 1212. |
Which is not a glyceride:A. lipidsB. fatsC. phopholipidsD. detergent |
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Answer» Correct Answer - D Detergent of sodium salts of long chain sulphonic acids. |
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| 1213. |
Tick mark the false statement.A. Artificial silk is a polysaccharideB. Natural silk is a proteinC. Collagen protein forms intercellular ground substanceD. Plant proteins are first class proteins |
| Answer» Correct Answer - D | |
| 1214. |
Fats and oils areA. GlycolipidsB. TriglyceridesC. PhospholipidsD. Conjugated lipids |
| Answer» Correct Answer - B | |
| 1215. |
Fats and oils are formed from respectively.A. glycerol and long chain unsaturated acids onlyB. glycerol and long chain: saturated acids onlyC. glycerol and long chain saturated acids and unsaturated acidsD. ethylene glycol and long chain unsaturated and saturated acids |
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Answer» Correct Answer - C |
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| 1216. |
Some statements are given below about oils and fats 1. oils can be converted into fats and vice versa2. oils and fats are triesters3. oils have high melting point than fats4. fats have strong Vander Waals force ofattraction than oils, Among the above, correct statement(s) is/ areA. only 2B. only 4C. Only 2 and 4D. Only 1 |
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Answer» Correct Answer - C |
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| 1217. |
Isoprene unit present inA. terpenesB. waxesC. phospholipidsD. glycolipids |
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Answer» Correct Answer - A |
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| 1218. |
Which of the following is radical intiatorA. `R-N=N-R`B. C. `CH_(3)-underset(underset(CH_(3))(|))overset(overset(CH_(3))(|))(C)-O-O- underset(underset(CH_(3))(|)) overset(overset(CH_(3))(|))(C)-CH_(3)`D. All |
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Answer» Correct Answer - D All are free radical initiators and catalyse the free radical polymerisation. |
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| 1219. |
Non reducing sugar end with suffixA. osideB. oseC. oneD. al |
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Answer» Correct Answer - A |
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| 1220. |
Sucrose on hydrolysis produces equimolar mixture ofA. D(+)-glucose and D(+)-fructoseB. D(+)-glucose and D(-)-fructoseC. D(-)-glucose and D(+)-fructoseD. D(-)-glucose and D(-)-fructose |
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Answer» Correct Answer - B |
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| 1221. |
The polymer obtained by the above compound isA. BakeliteB. Urea formaldehyde resineC. Melamine formaldehyde resinD. Teflon |
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Answer» Correct Answer - B Given polymer is formed by Urea and formaldehyde, hence is called Urea formaldehyde resine. |
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| 1222. |
Which of the following polymerises most easily ?A. `CH_(3)CH_(2)C -= CH`B. `CH_(2)=CH-CH =CH_(2)`C. `CH_(3)CH_(2)-CH =CH_(2)`D. `CH -= C-C -= CH` |
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Answer» Correct Answer - B `CH_(2)=CH-CH=CH_(2)` is conjugated diene which forms stable intermediate hence polymerises fastest. |
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| 1223. |
Which of the following contains isoprene unit ?A. Natural rubberB. PolyethyleneC. Nylon-66D. Dacron |
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Answer» Correct Answer - A Natural rubber contains is isoprene unit. |
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| 1224. |
Which of the following is not correct regarding terylene?A. Step-growth polymerB. Synthetic fibreC. Thermosetting plasticD. It is also called decron |
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Answer» Correct Answer - C Treylene is fibre not a thermosetting plastic because on heating they melt and do not show plastic property while rest option are true regarding to Tery1ene |
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| 1225. |
Isoprene is a valuableA. propeneB. Liquid fuelC. Synthetic rubberD. Petrol |
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Answer» Correct Answer - C Rubber is a polymer of isoprene. Its chemical formula is `(C_(5) H_(8))_(n)`. |
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| 1226. |
DNA strands are termed antilparallel be cause ofA. H-bondsB. phospho-diester bondsC. disulphide (S-S bonds)D. none of the above |
| Answer» Correct Answer - B | |
| 1227. |
Phytol isA. oilsB. fatsC. terpenesD. glycolipids |
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Answer» Correct Answer - C |
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| 1228. |
The two strands of DNA are (A) similar in nature and complementary (B) anti-parallel and complementary (C) parallel and complementary (D) basically, different in nature |
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Answer» The correct answer is (B) anti-parallel and complementary |
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| 1229. |
The glycolipids abundantly found inA. oilsB. fatsC. keratin in hairD. myelin sheath of neurons |
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Answer» Correct Answer - D |
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| 1230. |
Check the incorrect statement.A. Adenine and guanine are both purine bases and are found both in `DNA` and `RNA`.B. Genetic information is based upon the nucleotide sequence in `DNA`.C. The genetic code consist of triplets of nucieotide, each triplet codes an amino acid.D. Transfer `RNA` carries the code for the synthesis of proteins. |
| Answer» Correct Answer - D | |
| 1231. |
Name the monomers which are linked by (i) peptide bond, (ii) glycosidic bond to make their polymers. |
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Answer» (i) Peptide bond-Amino acids (ii) Glycosidic bond-Monosaccharide units |
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| 1232. |
In the modern system of nomenclature which one of the following enzyme occupies 6th positionA. LigaseB. IsomeraseC. LyaseD. Hydrolase |
| Answer» Correct Answer - A | |
| 1233. |
In the modern system of nomenclature which one of the following enzyme occupies 1st positionA. OxidoreductaseB. TransferaseC. HydrolaseD. Ligase |
| Answer» Correct Answer - A | |
| 1234. |
A nonopeptide contains……….peptide linkages.A. 10B. 8C. 9D. 18 |
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Answer» Correct Answer - B A nanopeptide contains eight peptide linkages. |
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| 1235. |
Which are true?A. Glucose is a disaccharideB. Starch is a polysaccharideC. Glucose and Fructose are not anomerD. Invert sugar consists of glucose and fructose |
| Answer» Correct Answer - B::C::D | |
| 1236. |
Which of the following are reduing sugar?A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 1237. |
Which makes the protein active and globular /Which structure provides specific shape and function to the protein?A. Primary structureB. Secondary StructureC. Tertiary structureD. Suphide bonds and peptide bonds |
| Answer» Correct Answer - C | |
| 1238. |
Consider the following statements about amino acids:A. the amino acids that constitute proteins are all L-amino acids.B. among the 20 amino acids that constitute proteins, glycine is the only one that does not possess chiral center.C. an important and sensitive test for the detection of L-amino acid is the ninhydrin colour test.D. `HNO_(2)` liberates nitrous oxide from amino acid |
| Answer» Correct Answer - A::B::C | |
| 1239. |
Which of the following carbohydrates are D-isomers?A. B. C. D. |
| Answer» Correct Answer - A::B::C::D | |
| 1240. |
Living organisim haveA. `alpha` -amino acids and L-sugarsB. L-amino acids and D-surgarC. D-amino acids and L-sugarD. `alpha`- amino acids and `alpha`-sugars. |
| Answer» Correct Answer - B | |
| 1241. |
On cooling the two separated strands of DNA again recoil. It is calledA. Chain reactionB. annealingC. both (1)&(2)D. palindrome |
| Answer» Correct Answer - B | |
| 1242. |
In which of the following, the ratio of hydrogen and oxygen atoms is 2:1? (A) proteins (B) fats (C) oil (D) carbohydrates |
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Answer» The correct answer is (D) carbohydrates |
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| 1243. |
The metal present in blood isA. AlB. HgC. CuD. Fe |
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Answer» Correct Answer - D Iron (Fe) is present in blood. |
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| 1244. |
Hydrolysis of sucrose is calledA. HydrationB. saponificationC. esterificationD. Inversion |
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Answer» Correct Answer - D Hydrolysis of sucrose to give glucose and fructose is called inversion |
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| 1245. |
The Secondary structure of a proteins refers to ?A. fixed configuration of the polypeptide back boneB. `alpha`-helical backboneC. hydrophobic interactionsD. sequence of `alpha`-amino acids. |
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Answer» Correct Answer - B Secondary structure of a protein refers to `alpha`-Helical backbone. |
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| 1246. |
If `K_(a_1)` and `K_(a_2)` are the ionisation constant of `H_3overset+NCHRCOOH` and `H_2NCHRCOO^(-)`, respectively the pH of the solution at the isoelectric point isA. `pH=(pK_(a_1)+pK_(a_2))`B. `pH=(ppK_(a_1)-pK_(a_2))^(1/2)`C. `pH=(pK_(a_1)+pK_(a_2))^(1/2)`D. `pH=(ppK_(a_1)+pK_(a_2))^(2)` |
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Answer» Correct Answer - C At a given pH, the species of amino acid exists in equilibrium `underset"Low pH"(H_3overset+N-undersetundersetR|CH-COOH) underset(H^+)overset(OH^-)hArr underset"Intermediate pH"(H_3overset+N-undersetundersetR|CH-COO^-) underset(H^+)overset(OH^-)hArr underset"High pH"(H_2NundersetundersetR|CHCOO^-)` with `K_(a_1)=([H_3Noverset+CH(R)COO^(-)][H^(+) ])/([H_3overset+NCH(R)COOH])` `K_(a_2)=([H_2NCH(R)COO^(-)][H^+])/([H_3N^(+)CHRCOO^(-)])` Thus, `K_(a_1)K_(a_2)=([H_2NCH(R)COO^(-)][H^+]^2)/([H_3N^(+)CH(R)COOH])` As isoelectric point, `[H_2NCH(R)COO^(-)]=[H_3N^(+)CH(R)COOH]` Thus, `K_(a_1)K_(a_2)=[H^(+)]^2 ` or pH=`[pK_(a_1) + pK_(a_2)]^(1//2)` |
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| 1247. |
It is best to carry out reaction with sugers in neutral or acidic medium and not is alkaline medium because in alkaline medium sugars undergo?A. RacimisationB. DecompositionC. InversionD. Rearrangement |
| Answer» Correct Answer - D | |
| 1248. |
The reagent which forms crystalline osazone derivatives when heated with glucose is?A. Fehling solutionB. Phenyl hydrazineC. Benedict solutionD. Hydroxylamine |
| Answer» Correct Answer - B | |
| 1249. |
The reagent which forms crystalline osazone derivatives when heated with glucose is?A. Fehling solutionB. phenyl hydrazineC. benedict solutionD. hydroxyle amine |
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Answer» Correct Answer - B Phenyl hydrazine reacts with glucose having -CHO group to give crystaline osazone derivative. |
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| 1250. |
A mixture of two amino acids having pl 9.60 and 5.40 can be separatedA. by adjusting the pH of the solution at 9.60B. by adjusting the pH of the solution at 5.40C. by adjusting the pH of the solution at 7.0D. by adjusting the pH of the solution at 14.0 |
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Answer» Correct Answer - B Every amino acid exists exclusively as dipolar ion when the pH of the solution is equal to its isoelectric point (pl), hence at this pH it does not migrate to either electrode, while at other pH, an amino acid migrates either to cathode or to anode depending upon its pH. Thus, at pH 9.60, amino acid with pl 5.40 will exist as an anion and migrate to anode while that with pl 9.60 will not migrate to any electrode. Similarly, at pH 5.40, amino acid with pl 9.60 will exist as cation and migrate to either electrode. |
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