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.
| 2001. |
In competitive inhibitionA. inhitor resembles the substrate in molecular structureB. inhibitor binds to allosteric site and block itC. inhibitor has no effect on active siteD. all correct |
| Answer» Correct Answer - A | |
| 2002. |
Read the given statement and select the option that correctly identifies X and Y. In a glycogen molecule, successive glucose units are joined together by X and branches are linked together by Y.A. `{:(" X",," Y"),("1,4"-alpha- "glycosidic bonds",,"1,4-" alpha-"glycosidic acid"):}`B. `{:(" X",," Y"),("1,4"-alpha- "glycosidic bonds",,"1,6-" alpha-"glycosidic bonds"):}`C. `{:(" X",," Y"),("1,6"-alpha- "glycosidic acid",,"1,4-" alpha-"glycosidic acid"):}`D. `{:(" X",," Y"),("1,6"-alpha- "glycosidic acids",,"1,6-" alpha-"glycosidic acid"):}` |
| Answer» Correct Answer - B | |
| 2003. |
Read the given statement and select the option that correctly identifies X and Y. In a glycogen molecule, successive glucose units are joined together by X and branches are linked together by Y.A. `{:(" X",," Y"),("1,4"-alpha- "glycosidic bonds",,"1,4-" alpha-"glycosidic acid"):}`B. `{:(" X",," Y"),("1,4"-alpha- "glycosidic bonds",,"1,6-" alpha-"glycosidic bonds"):}`C. `{:(" X",," Y"),("1,6"-alpha- "glycosidic acid",,"1,4-" alpha-"glycosidic acid"):}`D. `{:(" X",," Y"),("1,6"-alpha- "glycosidic acids",,"1,6-" alpha-"glycosidic acid"):}` |
| Answer» Correct Answer - B | |
| 2004. |
Observe these compounds and give answer of following question : Which of the following pair of compound gives same osazone product ?A. D(+) allose and D(-) guloseB. D (+) talose and D (+)mannoseC. D(+) altrose and D-xyloseD. D (-) guylose and D(-) idose |
| Answer» Correct Answer - d | |
| 2005. |
Observe these compounds and give answer of following question : `A overset(Br_(2)//H_(2)O)rarrB(H_(2)O(2)//FeSO_(4)rarr`D-RiboseA. D(+) alloseB. D-xyloseC. D- arabinoseD. D-fructose |
| Answer» Correct Answer - a | |
| 2006. |
Which statement about enzymes is not corect ?A. They act as a biocatalyst i.e., they accelerate biochemical reactionsB. They are usually globular proteinsC. Their catalytic efficiency is temperature dependentD. They can catalyse andy chemical reaction |
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Answer» Correct Answer - D The reactant of an enzyme-catalysed reaction is called a substrate. An enzyme has an active site wherine the substrate fits specifically. The specificity of an enzyme results from the conformation of the protein, and the particular amino acid side chain that makes up the active site. The specificity of an enzyme for its substrate in an example of molecular recognition. The specificity of an enzyme for its substrate is explained by a lock- and key model. Some enzymes are specific for a single substrate while some enzyme catalyse the reactions of an entire family of compounds with related structures. An enzyme brings all the reaction groups together at its active site and helps proper positioning of these groups fort the reactions ot take place easily. Some of the amino acid side chains of the enzymes are in proper position relative to the substrate to assist its reaction as an intermolecular catalyst. An enzymes binds a substrate at its active side and there after undergoes a conformational change to impart a strain in the substrate to make it more reactive. Enzymes have optimum activity at body temperature. |
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| 2007. |
The reaction of glucose with red `P + HI` is called:A. Sandmeyer reactionB. Reformatsky reactionC. Gattermann reactionD. reduction |
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Answer» Correct Answer - D red `P + HI` is reducing agent. |
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| 2008. |
Dextrins `(C_(6) H_(10) O_(5))_(n)` are used in :A. maing adhesiveB. confectionaryC. sizing paperD. all of these |
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Answer» Correct Answer - D All are uses of dextrins. |
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| 2009. |
Artificial sweetener used in soft drinks is:A. glucoseB. fructoseC. CelluloseD. aspartame |
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Answer» Correct Answer - D It is 160 times sweeter than sucrose. |
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| 2010. |
The sugar present in honey is:A. sucroseB. glucoseC. fructoseD. maltose |
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Answer» Correct Answer - C Honey is collected from flowers by honey bee which contain fructose. |
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| 2011. |
Vitamin A deficiency leads to disease known asA. beri-beriB. T.BC. Join painD. night blindness |
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Answer» Correct Answer - D |
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| 2012. |
Vitamin that is most readily produced in our body isA. vit-CB. vit-BC. vit-DD. vit-P |
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Answer» Correct Answer - C |
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| 2013. |
Which of the following bases is not present in DNA?A. AdenineB. ThymineC. CytosineD. Uracil |
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Answer» Correct Answer - D DNA contains following four bases (a) adenine (A) (b) thymine (T) (c) guanine (G) (d) cytosine (C) It does not contain uracil. |
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| 2014. |
Which of the following B group vitamins can be stored in our body?A. Vitamin `B_(1)`B. Vitamin `B_(2)`C. Vitamine `B_(6)`D. Vitamin `B_(12)` |
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Answer» Correct Answer - D Vitamin `B_(12)` can be stored in our body belongs to B group vitamins, because it is not water soluble. |
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| 2015. |
In nucleic acid the sequence isA. base-phosphate-sugarB. base-sugar-phosphateC. sugar-base-phosphateD. phosphate-base-sugar |
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Answer» Correct Answer - B |
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| 2016. |
The monomer used to produce orlon is:A. `CH_(2)=CHCN`B. `CH_(2)=CH-CL`C. `CH_(2)=CHF `D. `CH_(2)="CC"L_(2)` |
| Answer» Correct Answer - a | |
| 2017. |
Protein is a polymer ofA. glucoseB. terephthalic acidC. amino acidD. glycol |
| Answer» Correct Answer - c | |
| 2018. |
Antibiotic action of Dettol is due to to terpineol andA. ChlorobenzeneB. ChloroxylenolC. ChloroquineD. Bithional |
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Answer» Correct Answer - B Chloroxylenol and terpineol. |
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| 2019. |
The compound is used as A. antisepticB. antibioticC. AnalgesicD. pesticide |
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Answer» Correct Answer - C It is aspirin. |
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| 2020. |
Careful oxidation of sucrose with nitric acid yieldsA. oxalic acidB. glucaric acidC. tartaric acidD. any of these depending on the conditions |
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Answer» Correct Answer - D Oxidation of sucrose with nitric acid under different conditions gives either oxalic acid, (80%), tartaric acid `(40%)` or glucaric acid `(30%)`. Controlled oxidation of sucrose in alkaline solution with air gives D-arabonic acid. Hydrogenation with sucrose under controlled conditions gives a mixture of mannitol and sorbitol, which may be separated by fractional crystalisation. |
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| 2021. |
Can sugar isA. (-) - sucroseB. (+) - sucroseC. (+) - glucoseD. (-) - fructose |
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Answer» Correct Answer - B `(+)` Sucrose is our common table sugar, obtained from sugar cane and sugar beets. Of organic chemicals, it is the one produced in the largest amount in pure form. It is the most common disaccharide widely distributed in plants. |
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| 2022. |
Cane sugar on hydrolysis givesA. glucose onlyB. fructose onlyC. glucose and fructoseD. glucose and galactose |
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Answer» Correct Answer - C When `(+) -` sucrose is hydrolyzed by dilute aqueous acid, or by the action of the enzyme invertase (form yeast), it yields equal amounts of ` D - (+) -` glucose and `D - (-) -` fructose. |
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| 2023. |
Which of the following statements is correct?A. Freshly prepared solution of cane sugar, under the influence of acid catalyst, undergoes change in optical rotations with lapse of time. This phenomenon is called inversionB. Cane sugar and invert sugar are dextrorotatory and laevorotatory.C. The major and invert sugar present in honey is invert sugar.D. All of these |
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Answer» Correct Answer - D Hydrolysis of cane sugar (or `(+)-` sucrose) is accompanied by a change in the sign of rotation from positive to negative. Therefore, it is often called the inversion of `(+) -` sucrose The laevorotatory mixture of `(D) - (+) -` glucose and `D - (-) -` fructose obtained has been called invert sugar. Honey is mostly invert sugar, the bees supply the invertase. |
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| 2024. |
Invert sugar is an equimolar mixture ofA. D- frustose and L- fructoseB. D- glucose and L- glucoseC. D- glucose and L- fructoseD. D- glucose and D- fructose |
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Answer» Correct Answer - D Aqueous solution of cane sugare (sucrose) is dextrorotatory, `(alpha)_(D) = + 66.5^(@)`. On hydrolysis with dilute acid of enzyme invertase, cane sugar gives equimolar mixture of `D - (+)-` glucose and `D - (-) -` fructose. `underset([alpha]_(D)=+66.5^(@))underset("Sucrose")(C_(12)H_(22)O_(11)+H_(2)O) overset(HCl)rarr underset([alpha]_(D)=+52.5^(@))underset("D-glucose")(C_(6)H_(12)O_(6))+underset([alpha]_(D)=-92.4^(@))underset("D-fructose")(C_(6)H_(12)O_(6))` Sucrose is dextrorotatory but hydrolysis gives dextrorotatory glucose and laevorotatory fructose. Since the laevorotation of fructose `(-92.4^(@))` is more than dextrorotation of glucose `(+ 52.5^(@))`, the mixture is laevorotatory. Thus, hydrolysis of sucrose bring about a change in the sign of rotation, from dextro `(+)` to laevo `(-)` and such a change is known in inversion and the mixture is known as invert sugar. |
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| 2025. |
The term inverted sugar refers to an equimolar mixture :A. Glucose and galactoseB. glucose and fructoseC. glucose and mannoseD. glucose and ribose |
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Answer» Correct Answer - B |
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| 2026. |
Some statement are made belowA. glucose is aldohexoseB. naturally occurring glucose is dexto rotatoryC. glucose contain three chiral centreD. glucose contain one `1^(@)` alcoholic group and four `2^(@)` alcoholic groups |
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Answer» Correct Answer - C |
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| 2027. |
Aldotetroses consist of two different chiral carbon atoms and they exist inA. 2 optically active formsB. 4 optically active formsC. 6 optically active formsD. 8 optically active forms |
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Answer» Correct Answer - B |
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| 2028. |
Which of the following rotates the plane polarised light in clockwise direction?(a) L(-) Glucose (b) D (glucose) (c) L – fructose (d) L – Glyceraldehyde |
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Answer» (b) D (glucose) |
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| 2029. |
Which one given below is a non-reducing sugar? (a) Glucose (b) Sucrose (c) maltose (d) Lactose |
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Answer» Sucrose is a non-reducing sugar |
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| 2030. |
The correct corresponding order of names of four aldoses with configuration given below Respectively is …… (a) L – Erythrose, L – Threose, L – Erythrose, D – Threose(b) D – Threose, D – Erythrose, L – Thrcose, L – Erythrose (c) L – Etythrose, L – Threose, D – Erythrose, D – Threose (d) D – Erythrose, D – Threose, L – Erythrose, L – Threose |
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Answer» (d) D – Erythrose, D – Threose, L – Erythrose, L – Threose |
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| 2031. |
Compound X is :A. `(a) H_(3)C-C-=C-CH_(3)`B. `CH_(2)=CH-CH=CH_(2)`C. `(c ) CH_(3)-C-=C-CH_(2)-CH_(2)-CH`D. |
| Answer» Correct Answer - c | |
| 2032. |
Which of the following will decolourze `Br_(2)` water ?A. `CH_(2)=CH_(2)`B. `Me-C-=C-Me`C. D. |
| Answer» Correct Answer - a,b,c,d | |
| 2033. |
When one mole of the given compound reacts with sodium metal then how many moles of `H_(2)` gas will release ? A. 1 moleB. 1.5 moleC. 2 moleD. 0.5 mole |
| Answer» Correct Answer - d | |
| 2034. |
Which is /are used to identify by phenol in laboratory ?A. `FeCl_(3)`B. `NaNO_(2)` + HClC. `Br_(2)H_(2)O`D. Ceric ammonium nitrate |
| Answer» Correct Answer - a,b,c,d | |
| 2035. |
Which is not a laboratory test for `1^(@)` amides ?A. `CHCl_(3)+KOH`B. `CS_(2)+HgCl_(2)`C. Dil.`NaOH,Delta`D. Litmus test |
| Answer» Correct Answer - a,b,d | |
| 2036. |
Selected method used to estimate methoxy group in organic compound :A. Herzig Meryer methodB. Kjeldahl methodC. Zeisel methodD. Carius method |
| Answer» Correct Answer - c | |
| 2037. |
Which of the following will change the colour of cold dil. Alkaline `KMnO_(4)` ?A. `CH_(2)=CH_(2)`B. `Me-C-=C-Me`C. D. |
| Answer» Correct Answer - a,b | |
| 2038. |
Which of the followings will give colourless solution with hot acidic `KMnO_(4)`A. B. C. D. non of these |
| Answer» Correct Answer - d | |
| 2039. |
`H-overset(O)overset(||)(C)-OH " and " Me-overset(O)overset(||)(C)-OH ` can be differentitated by :A. iodoform testB. litmus testC. FehlingD. esterification test |
| Answer» Correct Answer - c | |
| 2040. |
Which of the following pairs can be differentiated ?A. 1-butyne and 2-butyneB. Ethane and etheneC. Ethane and ethyneD. 2-hexyne and 3-hexyne |
| Answer» Correct Answer - a,b,d | |
| 2041. |
`phNH_(2)` and PhNHMe can be differentiated by :A. `CHNL_(30)+ KOH`B. `NaNO_(2)+HCL`C. `PhSO_(2)CL `followed by KOHD. all of these |
| Answer» Correct Answer - c | |
| 2042. |
Each question has choices (a), (b), (c ) and (d) out of which ONLY ONR is correct. STATEMENT -1 : Blue colour. STATEMENT - 2 : is a secondary alcohol.A. Statement -1 is True, Statement-2 is True ,Statement -2 is a correct explanation for Statement -1.B. Statement -1 is True, Statement-2 is True ,Statement -2 is a NOT correct explanation for Statement -1.C. Statement -1 id True , Statement -2 is False.D. Statement -1 is False Statement -2 is True. |
| Answer» Correct Answer - d | |
| 2043. |
Vitamin C isA. citric acidB. ascorbic acidC. lactic acidD. tartaric acid |
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Answer» Correct Answer - B |
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| 2044. |
Ascorbic acid is .A. proteinB. vitaminC. enzymeD. oil |
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Answer» Correct Answer - B |
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| 2045. |
Which one of the following is a polysaccharide?(a) Nylon (b) Amylose (c) Ribose (d) Polyethene |
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Answer» Amylose is a polysaccharide. |
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| 2046. |
Ribose is an example of ……… (a) keto hexose (b) aldohexose (c) aldo pentose(d) disaccharide |
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Answer» (c) aldo pentose |
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| 2047. |
The hormone which transport glucose form blood to tissue isA. glycogenB. thyroxinC. insulinD. heparin |
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Answer» Correct Answer - C |
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| 2048. |
Sucrose molecule is made up of ………(a) a gluco pyranose and fructo pyranose (b) a glyco pyranose and fructo furanose (c) a gluco furanose and fructo pyranose (d) a gluco furanose and fructo furanose |
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Answer» (b) a glyco pyranose and fructo furanose |
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| 2049. |
In B-DNA, the rise per base pair would beA. `4.3 Å`B. `2.4 Å`C. `3.4 Å`D. `4.2 Å` |
| Answer» Correct Answer - C | |
| 2050. |
A nucleotide consists of ……… (a) base and sugar (b) base and phosphate (c) sugar and phosphate (d) base, sugar and phosphate |
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Answer» (d) base, sugar and phosphate |
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