Lysine is a basic amino acid because it contains an extra amino group in its side chain.
Q10mcq
Identify the basic amino acid from the following.
a.
Lysine
Correct Answer
b.
Valine
c.
Tyrosine
d.
Glutamic Acid
Step-by-Step AI Explanation
Verified Method
Lysine is a basic amino acid due to the presence of an extra amino group in its side chain.
Q55mcq
Match the following: (a) Inhibitor of catalytic activity (b) Possess peptide bonds (c) Cell wall material in fungi (d) Secondary metabolite. Choose the correct option from the following: (i) Ricin (ii) Malonate (iii) Chitin (iv) Collagen
a.
(1)(iii)(iv)(i)(ii)
b.
(2)(ii)(iii)(i)(iv)
c.
(3)(ii)(iv)(iii)(i)
Correct Answer
d.
(4)(iii)(i)(iv)(ii)
Step-by-Step AI Explanation
Verified Method
Inhibitor of catalytic activity is malonate (a-ii). Collagen is a protein that possesses peptide bonds (b-iv). Chitin is a cell wall material in fungi (c-iii). Ricin is a secondary metabolite (d-i).
Q72mcq
Identify the substances having glycosidic bond and peptide bond, respectively in their structure :
a.
Cellulose, lecithin
b.
Inulin, insulin
Correct Answer
c.
Chitin, cholesterol
d.
Glycerol, trypsin
Step-by-Step AI Explanation
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Inulin is a polymer of fructose (polysaccharide) containing glycosidic bonds. Insulin is a protein composed of amino acids linked by peptide bonds.
Q72mcq
Identify the substances having glycosidic bond and peptide bond, respectively in their structure :
a.
Cellulose, lecithin
b.
Inulin, insulin
Correct Answer
c.
Chitin, cholesterol
d.
Glycerol, trypsin
Step-by-Step AI Explanation
Verified Method
Inulin is a polymer of fructose connected by glycosidic bonds. Insulin is a protein hormone made of amino acids linked by peptide bonds.
Q136mcq
Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as:
a.
Cross Cannizzaro’s reaction
b.
Cross Aldol condensation
Correct Answer
c.
Aldol condensation
d.
Cannizzaro’s reaction
Step-by-Step AI Explanation
Verified Method
Aldol condensation between two different carbonyl compounds is called Cross Aldol condensation.
Q137mcq
Measuring Zeta potential is useful in determining which property of colloidal solution?
a.
Stability of the colloidal particles
Correct Answer
b.
Size of the colloidal particles
c.
Viscosity
d.
Solubility
Step-by-Step AI Explanation
Verified Method
Zeta potential is a measure of the magnitude of electrostatic repulsion between particles and is used to predict the stability of colloidal dispersions.
Q138mcq
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?
a.
-R effect of -CH3 groups
b.
Hyperconjugation
Correct Answer
c.
-I effect of -CH3 groups
d.
1R effect of -CH3 groups
Step-by-Step AI Explanation
Verified Method
The stability of carbocations increases with the number of alkyl groups attached to the positive carbon due to hyperconjugation and inductive effect.
Q139mcq
The correct option for free expansion of an ideal gas under adiabatic condition is:
a.
q < 0, ΔT=0 and w=0
b.
q > 0, ΔT > 0 and w > 0
c.
q=0, ΔT=0 and w=0
Correct Answer
d.
q=0, ΔT < 0 and w > 0
Step-by-Step AI Explanation
Verified Method
In free expansion against vacuum, w = 0. Since it is adiabatic, q = 0. By first law, ΔU = q + w = 0. For an ideal gas, ΔU = nCvΔT, so ΔT = 0.
Q139mcq
The correct option for free expansion of an ideal gas under adiabatic condition is :
a.
q < 0, ∆T=0 and w=0
b.
q > 0, ∆T > 0 and w > 0
c.
q=0, ∆T=0 and w=0
Correct Answer
d.
q=0, ∆T < 0 and w > 0
Step-by-Step AI Explanation
Verified Method
In free expansion against vacuum, external pressure is zero, so w = 0. For an adiabatic process, q = 0. According to the first law of thermodynamics, ∆U = q + w, so ∆U = 0. For an ideal gas, ∆U depends only on temperature, hence ∆T = 0.
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The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
a.
Calcium
b.
Potassium
c.
Iron
d.
Copper
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Identify the incorrect match. Name IUPAC Official Name (a) Unnilunium (i) Mendelevium (b) Unniltrium (ii) Lawrencium (c) Unnilhexium (iii) Seaborgium (d) Unununnium (iv) Darmstadtium
a.
(c), (iii)
b.
(d), (iv)
c.
(a), (i)
d.
(b), (ii)
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A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is :
a.
15 bar
b.
18 bar
c.
9 bar
d.
12 bar
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Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
b.
The oxidation states of chromium in CrO4^2- and Cr2O7^2- are not the same.
c.
Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
d.
The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.
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Identify the correct statements from the following: (a) CO2(g) is used as refrigerant for ice-cream and frozen food. (b) The structure of C60 contains twelve six carbon rings and twenty five carbon rings. (c) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline. (d) CO is colorless and odourless gas.
a.
(b) and (c) only
b.
(c) and (d) only
c.
(a), (b) and (c) only
d.
(a) and (c) only
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The freezing point depression constant (Kf) of benzene is 5.12 K kg mol^-1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places):
a.
0.40 K
b.
0.60 K
c.
0.20 K
d.
0.80 K
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