Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
a.
Glycerol, trypsin
b.
Cellulose, lecithin
c.
Inulin, insulin
Correct Answer
d.
Chitin, cholesterol
Step-by-Step AI Explanation
Verified Method
Inulin is a polysaccharide made of fructose units linked by glycosidic bonds, while insulin is a protein consisting of amino acids linked by peptide bonds.
Q132mcq
Identify the basic amino acid from the following.
a.
Glutamic Acid
b.
Lysine
Correct Answer
c.
Valine
d.
Tyrosine
Step-by-Step AI Explanation
Verified Method
Lysine contains an extra amino group in its side chain, making it a basic amino acid.
Q132mcq
Identify the basic amino acid from the following.
a.
Glutamic Acid
b.
Lysine
Correct Answer
c.
Valine
d.
Tyrosine
Step-by-Step AI Explanation
Verified Method
Lysine is a basic amino acid because it has an additional amino group in its side chain, making it basic at physiological pH.
Q136mcq
The calculated spin only magnetic moment of Cr2+ ion is
a.
4.90 BM
Correct Answer
b.
5.92 BM
c.
2.84 BM
d.
3.87 BM
Step-by-Step AI Explanation
Verified Method
Cr atom is [Ar] 3d5 4s1. Cr2+ is [Ar] 3d4. It has 4 unpaired electrons. Magnetic moment μ = sqrt(n(n+2)) = sqrt(4(6)) = sqrt(24) ≈ 4.90 BM.
Q137mcq
Match the following and identify the correct option.
a.
CO + H2 matches to Synthesis gas
b.
Temporary hardness of water matches to Mg(HCO3)2 + Ca(HCO3)2
c.
B2H6 matches to An electron deficient hydride
d.
H2O2 matches to Non-planar structure
Correct Answer
Step-by-Step AI Explanation
Verified Method
Synthesis gas is CO+H2, Temporary hardness is due to bicarbonates, B2H6 is electron deficient, and H2O2 has a non-planar (open book) structure.
Q138mcq
The mixture which shows positive deviation from Raoult’s law is
a.
Benzene + Toluene
b.
Acetone + Chloroform
c.
Chloroethane + Bromoethane
d.
Ethanol + Acetone
Correct Answer
Step-by-Step AI Explanation
Verified Method
Ethanol and Acetone show positive deviation because the solute-solvent interaction is weaker than solute-solute or solvent-solvent interactions.
Q139mcq
Identify the correct statement from the following :
a.
Blister copper has blistered appearance due to evolution of CO2.
b.
Vapour phase refining is carried out for Nickel by Van Arkel method.
c.
Pig iron can be moulded into a variety of shapes.
Correct Answer
d.
Wrought iron is impure iron with 4% carbon.
Step-by-Step AI Explanation
Verified Method
Pig iron is relatively soft and can be cast into a variety of shapes.
Q140mcq
Urea reacts with water to form A which will decompose to form B. B when passed through Cu2+ (aq), deep blue colour solution C is formed. What is the formula of C from the following ?
a.
[Cu(NH3)4]2+
Correct Answer
b.
Cu(OH)2
c.
CuCO3·Cu(OH)2
d.
CuSO4
Step-by-Step AI Explanation
Verified Method
Urea + H2O -> NH3 + CO2. NH3 reacts with Cu2+ to form the deep blue complex [Cu(NH3)4]2+.
Q141mcq
Hydrolysis of sucrose is given by the following reaction. Sucrose + H2O -> Glucose + Fructose. If the equilibrium constant (Kc) is 2 × 10^13 at 300 K, the value of ΔrG° at the same temperature will be :
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.
Copper
b.
Calcium
c.
Potassium
d.
Iron
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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.
b.
Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
c.
The oxidation states of chromium in CrO4^2- and Cr2O7^2- are not the same.
d.
Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
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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.
b.
Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
c.
The oxidation states of chromium in CrO4^2- and Cr2O7^2- are not the same.
d.
Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
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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.
(a) and (c) only
b.
(b) and (c) only
c.
(c) and (d) only
d.
(a), (b) and (c) only
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Match the following :
Oxide Nature
(a) CO (i) Basic
(b) BaO (ii) Neutral
(c) Al2O3 (iii) Acidic
(d) Cl2O7 (iv) Amphoteric
Which of the following is correct option?
a.
(1) (ii) (i) (iv)(iii)
b.
(2) (iii)(iv) (i)(ii)
c.
(3) (iv)(iii) (ii) (i)
d.
(4) (i) (ii) (iii) (iv)
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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.
12 bar
b.
15 bar
c.
18 bar
d.
9 bar
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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 : [Use atomic masses (in g mol–1) : N = 14, Ar = 40]
a.
12 bar
b.
15 bar
c.
18 bar
d.
9 bar
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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.
0.80 K
b.
0.40 K
c.
0.60 K
d.
0.20 K
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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.
0.80 K
b.
0.40 K
c.
0.60 K
d.
0.20 K
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