MCQ 11 Mark
Which carbon atoms of fructose are bonded together through oxygen forming fructofuranose?
- A2 and 6
- ✓2 and 5
- C1 and 6
- D1 and 5
Answer
View full question & answer→Correct option: B.
2 and 5
B
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106 questions · 102 auto-graded MCQ + 4 self-marked written.
MCQ 21 Mark
What is the number of $\pi$ electrons present in pyridine? cars
- ✓6
- B8
- C2
- D4
Answer
View full question & answer→Correct option: A.
6
A
MCQ 31 Mark
Which among the following carbohydrate molecules yields highest number of ees:13 galactose molecules when one mole of each is hydrolyzed?
- ARaffinose
- BLactose
- CSucrose
- ✓Stachyose
Answer
View full question & answer→Correct option: D.
Stachyose
D
MCQ 41 Mark
What is the number of primary and secondary alcoholic groups respectively present in glucose?
- A2, 3
- B4, 2
- ✓1,4
- D3,2
Answer
View full question & answer→Correct option: C.
1,4
C
MCQ 51 Mark
Which among the following carbohydrate molecules is not further hydrolysed in to smaller units?
- AStachyose
- ✓Ribose
- CLactose
- DRaffinose
Answer
View full question & answer→Correct option: B.
Ribose
B
MCQ 61 Mark
What is the IUPC name of the compound?
- A4-methyl-6-chlorocyclohexanone
- B4-methyl-2-chlorocyclohexanone
- ✓2-chloro-4-methylcyclohexanone
- D6- chloro -4-methylcyclohexanone
Answer
View full question & answer→Correct option: C.
2-chloro-4-methylcyclohexanone
C
MCQ 71 Mark
What is the quantity of water required to obtain one mole of glucose from one mole of sucrose by acid hydrolysis ?
- A9.5g
- B15.0g
- ✓18.0g
- D16.0g
Answer
View full question & answer→Correct option: C.
18.0g
C
MCQ 81 Mark
Which from following amino acids contains sulfur?
- ASerine
- ✓Cysteine
- CTryptophan
- DHistidine
Answer
View full question & answer→Correct option: B.
Cysteine
B
MCQ 91 Mark
Which among the following sugars is called as laevulose?
- AGlucose
- BMaltose
- CGalactose
- ✓Fructose
Answer
View full question & answer→Correct option: D.
Fructose
D
MCQ 101 Mark
Which among following compounds possesses highest number of $N$ atoms in it?
- ACytosine
- BUracil
- ✓Guanine
- DThymine
Answer
View full question & answer→Correct option: C.
Guanine
C
MCQ 111 Mark
Which nitrogen atom of pyrimidine base numbered from 1 to 6 is bonded with furanose sugar ?
- A5
- B4
- ✓1
- D2
Answer
View full question & answer→Correct option: C.
1
C
MCQ 121 Mark
Identify the sugar molecule involved in polynucleotide formation.
- ATriose
- ✓Pentose
- CTetrose
- DHexose
Answer
View full question & answer→Correct option: B.
Pentose
MCQ 131 Mark
Identify the nitrogen base of nucleic acid from following having double ring structure.
- ✓Guanine
- BCytosine
- CUracil
- DThymine
Answer
View full question & answer→Correct option: A.
Guanine
MCQ 141 Mark
What is the total number of essential amino acids?
- A12
- ✓10
- C5
- D8
Answer
View full question & answer→Correct option: B.
10
B
MCQ 151 Mark
Which among the following enzymes converts glucose to fructose ?
- AAmylase
- BLipase
- CProteases
- ✓Glucose isomerase
Answer
View full question & answer→Correct option: D.
Glucose isomerase
MCQ 161 Mark
What is the source of L -Lactic acid from the following?
- ATamarind
- ✓Curd
- CVinegar
- DLemon
Answer
View full question & answer→Correct option: B.
Curd
B
MCQ 171 Mark
Which of the following sugar is present in nucleotide of RNA?
- AL-Threose
- BD - Fructose
- CL - Glucose
- ✓D - Ribose
Answer
View full question & answer→Correct option: D.
D - Ribose
D
MCQ 181 Mark
How many secondary hydroxyl groups are present in glucose?
- A2
- ✓4
- C3
- D5
Answer
View full question & answer→Correct option: B.
4
B
MCQ 191 Mark
Which carbon atom of glucose, numbered from $C-1$ to $C-6$ converts it's functional group to$- COOH$ group when heated with $Br _2$ water?
- A$C-6$
- B$C-2$
- ✓$C -1$
- D$C-4$
Answer
View full question & answer→Correct option: C.
$C -1$
MCQ 201 Mark
Which of the following reagents converts $- CH _2 OH$ group of glucose to $- COOH$ group?
- AHydroxyl amine
- BHydrogen cyanide
- ✓dil. nitric acid
- DAcetic anhydride
Answer
View full question & answer→Correct option: C.
dil. nitric acid
MCQ 211 Mark
RNA has
- ✓A – U base pairing
- BP – S – P – S backbone
- Cdouble helix
- DG – C base pairing
Answer
View full question & answer→Correct option: A.
A – U base pairing
A – U base pairing
MCQ 221 Mark
A disulfide link gives rise to the following structure of protein.
- APrimary
- BSecondary
- ✓Tertiary
- DQuaternary
Answer
View full question & answer→Correct option: C.
Tertiary
MCQ 231 Mark
Tryptophan is called essential amino acid because
- AIt contains an aromatic nucleus.
- BIt is present in all the human proteins.
- ✓It cannot be synthesized by the human body.
- DIt is an essential constituent of enzymes.
Answer
View full question & answer→Correct option: C.
It cannot be synthesized by the human body.
MCQ 241 Mark
Which of the following does not apply to $CH _2 NH _2- COOH$
- ANeutral amino acid
- BL – amino acid
- CExists as zwitterion
- ✓Natural amino acid
Answer
View full question & answer→Correct option: D.
Natural amino acid
MCQ 251 Mark
The open chain formula of glucose does not contain
- AFormyl group
- ✓Anomeric hydroxyl group
- CPrimary hydroxyl group
- DSecondary hydroxyl group
Answer
View full question & answer→Correct option: B.
Anomeric hydroxyl group
MCQ 261 Mark
$CH _2 OH - CO -( CHOH )_4- CH _2 OH$ is an example of
- AAldohexose
- BAldoheptose
- CKetotetrose
- ✓Ketoheptose
Answer
View full question & answer→Correct option: D.
Ketoheptose
MCQ 271 Mark
Identify the trisaccharide from following.
- AMaltose
- BLactose
- ✓Raffinose
- DStachyose
Answer
View full question & answer→Correct option: C.
Raffinose
(c) : Raffinose is a trisaccharide.
MCQ 281 Mark
Which carbon atoms (numbered from $C _1$ to $C _6$ ) are involved in the formation of ring structure of glucose?
- A$C _2$ and $C _5$
- B$C _1$ and $C _3$
- C$C _1$ and $C _4$
- ✓$C _1$ and $C _5$
Answer
View full question & answer→Correct option: D.
$C _1$ and $C _5$
(d): $C_1$ and $C_5$ are involved in the formation of ring structure of glucose.
MCQ 291 Mark
What is the value of specific rotation exhibited by glucose molecule?
- ✓$+52.7^{\circ}$
- B$-92.4^{\circ}$
- C$+66.5^{\circ}$
- D$+40.3^{\circ}$
Answer
View full question & answer→Correct option: A.
$+52.7^{\circ}$
(a) : The specific rotation of $D$-glucose is $+52.7^{\circ}$,
MCQ 301 Mark
Which of the following is not a basic amino acid?
- ✓Proline
- BLysine
- CArginine
- DHistidine
Answer
View full question & answer→Correct option: A.
Proline
(a) : Proline is a neutral amino acid.
MCQ 311 Mark
What type of peptide is the glycylalanine?
- ✓Dipeptide
- BTripeptide
- CTetrapeptide
- DPentapeptide
Answer
View full question & answer→Correct option: A.
Dipeptide
(a) :
MCQ 321 Mark
Identify non reducing sugar from following.
- ✓Sucrose
- BMaltose
- CLactose
- DGlucose
Answer
View full question & answer→Correct option: A.
Sucrose
(a) : Sucrose is a non reducing sugar.
MCQ 331 Mark
In which of the following carbohydrates, molecular mass increases by $84 u$ after complete acetylation?
- ✓Aldotriose
- BAldotetrose
- CKetotetrose
- DKetopentose
Answer
View full question & answer→Correct option: A.
Aldotriose
(a): Mass of the one $CH _3 CO$ group $=43 u$
Let the number of $OH$ groups be $x$.
$\therefore \quad$ Change of mass after acetylation $=43 x-x=84$
$
42 x=84 \Rightarrow x=2
$
$\therefore \quad$ It has 2 hydroxyl groups.
Aldotriose has 2 hydroxyl groups.
Let the number of $OH$ groups be $x$.
$\therefore \quad$ Change of mass after acetylation $=43 x-x=84$
$
42 x=84 \Rightarrow x=2
$
$\therefore \quad$ It has 2 hydroxyl groups.
Aldotriose has 2 hydroxyl groups.
MCQ 341 Mark
Which carbon atom of glucose, numbered from $C -1$ to $C -6$ converts its functional group to $- COOH$ group when heated with $Br _2$ water?
- ✓$C -1$
- B
- C$C -2$
- D$C -6$
Answer
View full question & answer→Correct option: A.
$C -1$
(a) :
MCQ 351 Mark
Which of the following reagents converts $- CH _2 OH$ group of glucose to - $COOH$ group?
- ✓Dil. nitric acid
- BHydrogen cyanide
- CHydroxyl amine
- DAcetic anhydride
Answer
View full question & answer→Correct option: A.
Dil. nitric acid
(a) :
MCQ 361 Mark
Which one of the amino acids can be synthesised in the body?
- ✓Alanine
- BLysine
- CValine
- DHistidine
Answer
View full question & answer→Correct option: A.
Alanine
(a) : Except alanine, all the given amino acids are essential amino acids which cannot be synthesised in the body and must be obtained through diet.
MCQ 371 Mark
What is the basic formula for starch?
- A$\left( C _6 H _{12} O _6\right)_n$
- ✓$\left( C _6 H _{10} O _5\right)_n$
- C$C _{12} H _{22} O _{11}$
- D$\left( C _6 H _{12} O _4\right)_n$
Answer
View full question & answer→Correct option: B.
$\left( C _6 H _{10} O _5\right)_n$
(b) : Starch is a polysaccharide comprising glucose monomers joined in $\alpha-1,4$ linkage. The basic chemical formula of the starch molecule is $\left( C _6 H _{10} O _5\right)_n$.
MCQ 381 Mark
Which of the following molecules form a zwitter ion?
- A$CH _3 COOCH _3$
- ✓$H _2 NCH _2 COOH$
- C$CH _3 COC _2 H _5$
- D$CH _3 CH _2 COOH$
Answer
View full question & answer→Correct option: B.
$H _2 NCH _2 COOH$
(b) :$\underset{\text { (Amino acid) }}{\mathrm{H}_2 \mathrm{NCH}_2 \mathrm{COOH}} \longrightarrow \underset{\text { (Zwitter ion) }}{\mathrm{H}_3 \stackrel{+}{+} \mathrm{NCH}_2 \mathrm{COO}^{-}}$
MCQ 391 Mark
Which carbon atom of deoxyribose sugar in DNA does
- A
- B$C _3$
- ✓$C _2$
- D
Answer
View full question & answer→Correct option: C.
$C _2$
(c) :
MCQ 401 Mark
Identify the monosaccharide containing only one asymmetric carbon atom in its molecule.
- ARibulose
- BRibose
- CErythrose
- ✓Glyceraldehyde
Answer
View full question & answer→Correct option: D.
Glyceraldehyde
(d) :
MCQ 411 Mark
A molecule of stachyose contains how many carbon atoms?
- A6
- B12
- C18
- ✓24
Answer
View full question & answer→Correct option: D.
24
(d) : Stachyose is a tetrasaccharide. It consists of one $\alpha$ - $D$-glucose unit, two $\alpha$ - $D$-galactose units and one $\beta$ - $D$-fructose unit. Thus, it contains 24 carbon atoms.
MCQ 421 Mark
The amino acid which is basic in nature is
- ✓histidine
- Btyrosine
- Cproline
- Dvaline.
Answer
View full question & answer→Correct option: A.
histidine
(a) : Histidine is a basic amino acid whereas proline, valine and tyrosine are neutral amino acids.
MCQ 431 Mark
What type of sugar molecule is present in DNA?
- AD-3-Deoxyribose
- BD-Ribose
- ✓D-2-Deoxyribose
- DD-Glucopyranose
Answer
View full question & answer→Correct option: C.
D-2-Deoxyribose
(c) : DNA contains $\beta-D-2$-deoxyribose sugar moiety.
MCQ 441 Mark
What is the combining ratio of glycerol and fatty acids when they combine to form triglyceride?
- A$3: 4$
- B$3: 2$
- ✓$1: 3$
- D$1: 2$
Answer
View full question & answer→Correct option: C.
$1: 3$
(c) :
MCQ 451 Mark
Which of the following amino acids is basic in nature?
- AValine
- BTyrosine
- ✓Arginine
- DLeucine
Answer
View full question & answer→Correct option: C.
Arginine
(c) : Arginine is a basic amino acid as number of $- NH _2$ groups is greater than the number of $- COOH$ group.
MCQ 461 Mark
Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms presence of
- Asix carbon atoms linked in straight chain
- Bsecondary alcoholic group in glucose
- ✓aldehyde group in glucose
- Dprimary alcoholic group in glucose.
Answer
View full question & answer→Correct option: C.
aldehyde group in glucose
(c) : Glucose on oxidation with a mild oxidising agent like bromine water, gives gluconic acid containing the same six carbon atoms as present in glucose. This suggest that the carbonyl group present in glucose is an aldehydic group.
MCQ 471 Mark
During conversion of glucose intoglucose cyanohydrin, what functional group/atom of glucose is replaced?
- AHydrogen
- ✓Aldehydic group
- CPrimary alcoholic group
- DSecondary alcoholic group
Answer
View full question & answer→Correct option: B.
Aldehydic group
(b) :
MCQ 481 Mark
Which of the following proteins is globular?
- ACollagen
- ✓Albumin
- CMyosin
- DFibroin
Answer
View full question & answer→Correct option: B.
Albumin
(b) : Enzymes, hormones, antibodies, haemoglobin, fibrinogen, albumin etc, are all examples of globular proteins.
MCQ 491 Mark
What is the volume of water consumed during acid hydrolysis of $1.368 kg$ of sucrose? (Given : Molar masses of sucrose $=342$, water $=18$, density of water $=1 g / cm ^3$ )
- ✓$0.072 dm ^3$
- B$0.720 dm ^3$
- C$0.18 dm ^3$
- D$0.018 dm ^3$
Answer
View full question & answer→Correct option: A.
$0.072 dm ^3$
(a) : Acid hydrolysis of sugar can be represented as:
$
\underset{342 g }{ C _{12} H _{22} O _{11}}+\underset{18 g }{ H _2 O } \xrightarrow{ H ^{+}} \underset{\text { D-Glucose }}{ C _6 H _{12} O _6}+\underset{\text { D-Fructose }}{ C _6 H _{12} O _6}
$
$0.342 kg$ of sugar requires $18 g$ water.
$1.368 kg$ of sugar will require $\frac{18}{0.342} \times 1.368 g =72 g$ water
Density of water $=1 g / cm ^3$
Hence, volume of water used $=72 cm ^3=0.072 dm ^3$
$
\underset{342 g }{ C _{12} H _{22} O _{11}}+\underset{18 g }{ H _2 O } \xrightarrow{ H ^{+}} \underset{\text { D-Glucose }}{ C _6 H _{12} O _6}+\underset{\text { D-Fructose }}{ C _6 H _{12} O _6}
$
$0.342 kg$ of sugar requires $18 g$ water.
$1.368 kg$ of sugar will require $\frac{18}{0.342} \times 1.368 g =72 g$ water
Density of water $=1 g / cm ^3$
Hence, volume of water used $=72 cm ^3=0.072 dm ^3$
MCQ 501 Mark
One mole of stachyose on hydrolysis yields
- ✓1 mole of glucose +1 mole of fructose +2 moles of galactose
- B2 moles of glucose +1 mole of fructose +1 mole of galactose
- C1 mole of glucose +2 moles of fructose +1 mole of galactose
- D2 moles of glucose +2 moles of fructose.
Answer
View full question & answer→Correct option: A.
1 mole of glucose +1 mole of fructose +2 moles of galactose
(a) :
$
: \underset{\text { Stachyose }}{ C _{24} H _{42} O _{21}}+3 H _2 O \xrightarrow{ H ^{+}} \underset{\text { Glucose }}{ C _6 H _{12} O _6}+\underset{\text { Fructose }}{ C _6 H _{12} O _6}
$$+\underset {Galactose} {2C_6H_{12}O_6}$
$
: \underset{\text { Stachyose }}{ C _{24} H _{42} O _{21}}+3 H _2 O \xrightarrow{ H ^{+}} \underset{\text { Glucose }}{ C _6 H _{12} O _6}+\underset{\text { Fructose }}{ C _6 H _{12} O _6}
$$+\underset {Galactose} {2C_6H_{12}O_6}$
MCQ 511 Mark
Deficiency of which vitamin causes degeneration of spinal cord?
- A$E$
- B$K$
- ✓$B _{12}$
- D$A$
Answer
View full question & answer→Correct option: C.
$B _{12}$
(c) $B _{12}$
MCQ 521 Mark
Maltose is a
- Apolysaccharide
- ✓disaccharide
- Ctrisaccharide
- Dmonosaccharide
Answer
View full question & answer→Correct option: B.
disaccharide
disaccharide
MCQ 531 Mark
Which of the following NOT present in DNA?
- AAdenine
- BGuanine
- CThymine
- ✓Uracil
Answer
View full question & answer→Correct option: D.
Uracil
Uracil
MCQ 541 Mark
How many moles of $\left( CH _3 CO \right)_2 O$ will be required to form glucose pentaacetate form 2 moles of glucose?
- A2
- B5
- ✓10
- D$2.5$
Answer
View full question & answer→Correct option: C.
10
10
MCQ 551 Mark
Stachyose is an example of
- Amonosaccharides
- Bdisaccharides
- Ctrisaccharides
- ✓tetrasaccharides
Answer
View full question & answer→Correct option: D.
tetrasaccharides
tetrasaccharides
MCQ 561 Mark
Peptide linkage is
- A
- B
- C
- D
MCQ 571 Mark
The number of – OH groups present in ribulose is
- A3
- ✓4
- C6
- D5
Answer
View full question & answer→Correct option: B.
4
4
MCQ 581 Mark
Pyranose structure of glucose is
- Aan open chain structure of glucose
- Ba structure of reduction product of glucose
- ✓a cyclic six-membered structure of glucose
- Da four-membered cyclic form of glucose
Answer
View full question & answer→Correct option: C.
a cyclic six-membered structure of glucose
a cyclic six-membered structure of glucose
MCQ 591 Mark
Insulin contains
- ✓51 amino acids
- B151 amino acids
- C15 amino acids
- D115 amino acids
Answer
View full question & answer→Correct option: A.
51 amino acids
51 amino acids
MCQ 601 Mark
Amylopectin is
- Asoluble in water and constitutes about $80 \%$ of starch
- ✓insoluble in water and constitutes about $80 \%$ of starch
- CSoluble in alcohol and constitutes about $60 \%$ of starch
- Din soluble in alcohol and constitutes about $60 \%$ of starch
Answer
View full question & answer→Correct option: B.
insoluble in water and constitutes about $80 \%$ of starch
insoluble in water and constitutes about $80 \%$ of starch
MCQ 611 Mark
Naturally αcurring glucose is
- ✓dextro rotatory
- Blaevo rotatory
- Cracemic mixture
- Dall of these
Answer
View full question & answer→Correct option: A.
dextro rotatory
dextro rotatory
MCQ 621 Mark
Raffinose on hydrolysis gives
- Aglucose + glucose + galactose
- ✓glucose + fructose + galactose
- Cglucose + galactose + galactose
- Dfructose + galactose + galactose
Answer
View full question & answer→Correct option: B.
glucose + fructose + galactose
glucose + fructose + galactose
MCQ 631 Mark
Lactose on hydrolysis gives
- Aglucose + glucose
- Bglucose + fructose
- ✓glucose + galactose
- Dfructose + galactose
Answer
View full question & answer→Correct option: C.
glucose + galactose
glucose + galactose
MCQ 641 Mark
Rhamnose is a
- ✓carbohydrate
- Bprotein
- Clipid
- Dvitamin
Answer
View full question & answer→Correct option: A.
carbohydrate
carbohydrate
MCQ 651 Mark
An amino acid containing sulphur is
- Aserine
- ✓cysteine
- Cvaline
- Dasparagine
Answer
View full question & answer→Correct option: B.
cysteine
cysteine
MCQ 661 Mark
Precipitation of protein is referred to as
- Adestruction of proteins
- Bseparation of proteins
- ✓denaturation of proteins
- Dfragmentation of proteins
Answer
View full question & answer→Correct option: C.
denaturation of proteins
denaturation of proteins
MCQ 671 Mark
Basic amino acid is
- ✓Lysine
- BGlycine
- CCystine
- DAlanine
Answer
View full question & answer→Correct option: A.
Lysine
Lysine
MCQ 681 Mark
Acidic amino acid is
- AGlutamine
- ✓Glutamic acid
- CTyrosine
- DLysine
Answer
View full question & answer→Correct option: B.
Glutamic acid
Glutamic acid
MCQ 691 Mark
Glycine on heating forms
- A
- B$H _2 N - CH _2- COOH _4$
- C$H _3 \stackrel{+}{ N }- CH _2- COO ^{-}$
- D
MCQ 701 Mark
Which one of the following statements is not correct about DNA molecule?
- AIt has double helix structure
- BIt serves as hereditary material
- ✓The two DNA strands are exactly similar
- DIts replication is called semi-conservative mode of replication
Answer
View full question & answer→Correct option: C.
The two DNA strands are exactly similar
The two DNA strands are exactly similar
MCQ 711 Mark
Sucrose molecules consists of
- Aa glucofuranose and a fructopyranose
- Ba glucofuranose and a fructofuranose
- Ca glucopyranose and a fructopyranose
- ✓a glucopyranose and a’ fructofuranose
Answer
View full question & answer→Correct option: D.
a glucopyranose and a’ fructofuranose
a glucopyranose and a’ fructofuranose
MCQ 721 Mark
Which of the following amino acids is basic in nature?
- AValine
- BTyrosine
- ✓Arginine
- DLuecine
Answer
View full question & answer→Correct option: C.
Arginine
Arginine
MCQ 731 Mark
In maltose, glycosidic linkage is present between the two glucose units at positions
- A1, 2
- B1, 1
- C1, 3
- ✓1, 4
Answer
View full question & answer→Correct option: D.
1, 4
1, 4
MCQ 741 Mark
The secondary structure of a protein is determined by
- Aco-ordinate bond
- Bcovalent bond
- Cionic bond
- ✓hydrogen bond
Answer
View full question & answer→Correct option: D.
hydrogen bond
hydrogen bond
MCQ 751 Mark
DNA has a structure of helix was reported by
- AHerman Fischer
- BFedrick Sauger
- CAndreas Marggraf
- ✓Watson and Crick
Answer
View full question & answer→Correct option: D.
Watson and Crick
Watson and Crick
MCQ 761 Mark
In metabolic prαess the maximum energy is given by
- Acarbohydrates
- Bproteins
- Cvitamins
- ✓fats
Answer
View full question & answer→Correct option: D.
fats
fats
MCQ 771 Mark
Which one of the following molecules will form zwitter ion?
- A$CH _3 COOH$
- B$CH _3 CH _2 NH _2$
- C$CCl _3 NO _2$
- ✓$NH _2 CH _2 COOH$
Answer
View full question & answer→Correct option: D.
$NH _2 CH _2 COOH$
$NH _2 CH _2 COOH$
MCQ 781 Mark
DNA is a polymer of units of
- Asugars
- Bribose
- ✓amino acids
- Dnucleotides
Answer
View full question & answer→Correct option: C.
amino acids
amino acids
MCQ 791 Mark
Which one of the following is not a constituent of RNA?
- ARibose
- ✓Uracil
- CThymine
- DPhosphate
Answer
View full question & answer→Correct option: B.
Uracil
Uracil
MCQ 801 Mark
A biological catalyst is essentially
- Aan amino acid
- Ban enzyme
- Ca nitrogen molecule
- ✓a carbohydrate
Answer
View full question & answer→Correct option: D.
a carbohydrate
a carbohydrate
MCQ 811 Mark
Which one of the following is NOT produced by human body?
- ADNA
- BHormones
- ✓Enzymes
- DVitamins
Answer
View full question & answer→Correct option: C.
Enzymes
Enzymes
MCQ 821 Mark
The carbohydrates used for silvering of mirror is
- Afructose
- Bstarch
- ✓glucose
- Dcellulose
Answer
View full question & answer→Correct option: C.
glucose
glucose
MCQ 831 Mark
Milk sugar is
- Asucrose
- ✓lactose
- Cmaltose
- Dglucose
Answer
View full question & answer→Correct option: B.
lactose
lactose
MCQ 841 Mark
The main structural feature of a protein molecule is the presence of
- Aan ester linkage
- Ban ether linkage
- ✓a peptide linkage
- Dall of these
Answer
View full question & answer→Correct option: C.
a peptide linkage
a peptide linkage
MCQ 851 Mark
The water insoluble protein is
- Acasein of milk
- Balbumin
- Cserum albumin
- ✓keratin of hair
Answer
View full question & answer→Correct option: D.
keratin of hair
keratin of hair
MCQ 861 Mark
Amino acids usually exist in the form of zwitter ion which consist of
- Athe basic group- $NH _2$ and the acidic group $- COOH$
- Bthe acidic group $- N ^{+} H _3$ and the basic group $COO ^{-}$
- Cthe acidic group $- COO ^{+}$and the acidic group $NH ^{3-}$
- Dacidic or basic group
Answer
View full question & answer→the acidic group $- N ^{+} H _3$ and the basic group $COO$ -
MCQ 871 Mark
The simplest amino acid is
- ✓glycine
- Boxalic acid
- Cadipic acid
- Dcaprolactam
Answer
View full question & answer→Correct option: A.
glycine
glycine
MCQ 881 Mark
Protein are also called
- Apolysaccharides
- ✓polypeptides
- Cpolyglycerides
- Dpolyster
Answer
View full question & answer→Correct option: B.
polypeptides
polypeptides
MCQ 891 Mark
Haemoglobin is the example of-
- Asimple protein
- Bderived protein
- Cfibrous protein
- ✓conjugated protein
Answer
View full question & answer→Correct option: D.
conjugated protein
conjugated protein
MCQ 901 Mark
Final hydrolysis product of simple protein is
- Acarboxylic acid
- ✓$\alpha$-amino acid
- Cmineral acid
- Dacetic acid
Answer
View full question & answer→Correct option: B.
$\alpha$-amino acid
$\alpha$-amino acid
MCQ 911 Mark
Which of the following is NOT TRUE about glucose?
- AIt is monosaccharide
- BIt is a polyhydroxy aldehyde
- ✓It is polyhydroxy ketone
- DIt contains six carbon atoms
Answer
View full question & answer→Correct option: C.
It is polyhydroxy ketone
It is polyhydroxy ketone
MCQ 921 Mark
The number of monosaccharide units formed on hydrolysis of glucose are
- ✓zero
- Bone
- Ctwo
- Dthree
Answer
View full question & answer→Correct option: A.
zero
zero
MCQ 931 Mark
On commerical scale, glucose is prepared from
- Astarch
- Bpotato pulp
- Csucrose
- ✓both (a) and ( b)
Answer
View full question & answer→Correct option: D.
both (a) and ( b)
both (a) and ( b)
MCQ 941 Mark
Cane sugar on hydrolysis gives
- Aglucose and maltose
- Bglucose and lactose
- ✓glucose and fructose
- Donly glucose
Answer
View full question & answer→Correct option: C.
glucose and fructose
glucose and fructose
MCQ 951 Mark
The example of ketopentose is
- Agalactose
- ✓ribose
- Craffinose
- Dmaltose
Answer
View full question & answer→Correct option: B.
ribose
ribose
MCQ 961 Mark
Dextrose, grape sugar and blood sugar αcurs in
- Afructose
- ✓glucose
- Csucrose
- Dstarch
Answer
View full question & answer→Correct option: B.
glucose
glucose
MCQ 971 Mark
The example of aldopentose is
- ✓arabinose
- Bglucose
- Cfructose
- Dsucrose
Answer
View full question & answer→Correct option: A.
arabinose
arabinose
MCQ 981 Mark
Glucose differs from fructose in
- Athe functional group
- Bthe number of chiral carbon atoms
- Cthe number of carbon atoms
- Dboth (a) and (b)
Answer
View full question & answer→both (a) and ( b)
MCQ 991 Mark
Which of the following carbohydrates cannot undergo hydrolysis?
- ✓Glucose
- BSucrose
- CCellulose
- DMaltose
Answer
View full question & answer→Correct option: A.
Glucose
Glucose
MCQ 1001 Mark
Which of the following sugars can be used to prepare glucose on a large scale?
- ACellulose
- BCane sugar
- CGalactose
- ✓Starch
Answer
View full question & answer→Correct option: D.
Starch
Starch
MCQ 1011 Mark
Monosaccharides containing aldehyde group are called
- ✓aldoses
- Bketoses
- Cpolysaccharides
- Ddisaccharides
Answer
View full question & answer→Correct option: A.
aldoses
aldoses
MCQ 1021 Mark
The general formula of carbohydrates is
- A$C \left( H _2 O \right)$
- ✓$C _{ x }\left( H _2 O \right)_{ y }$
- C$C _{ x }\left( H _2 O \right)$
- D$C _x\left( H _2 O \right)_x$
Answer
View full question & answer→Correct option: B.
$C _{ x }\left( H _2 O \right)_{ y }$
$C _{ x }\left( H _2 O \right)_{ y }$
MCQ 1031 Mark
Oxidation product of glucose with bromine water is
- Asorbitol
- ✓gluconic acid
- Cglutamic acid
- Dsaccharic acid
Answer
View full question & answer→Correct option: B.
gluconic acid
gluconic acid
MCQ 1041 Mark
Fructose is
- Aaldopentose
- Baldohexose
- Cketopentose
- ✓ketohexose
Answer
View full question & answer→Correct option: D.
ketohexose
ketohexose
MCQ 1051 Mark
Which of the following is the example of disaccharide?
- AGlucose
- BRaffinose
- CCellulose
- ✓Sucrose
Answer
View full question & answer→Correct option: D.
Sucrose
Sucrose
MCQ 1061 Mark
Which of the following is not sugar?
- ASucrose
- ✓Starch
- CFructose
- DGlucose
Answer
View full question & answer→Correct option: B.
Starch
Starch