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
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Lysine is a basic amino acid because it contains an extra amino group in its side chain.
Q32mcq
Which one of the following is the most abundant protein in the animals?
a.
Lectin
b.
Insulin
c.
Haemoglobin
d.
Collagen
Correct Answer
Step-by-Step AI Explanation
Verified Method
Collagen is the most abundant protein in the animal kingdom, providing structural support to connective tissues.
Q40mcq
Which of the following statements is correct?
a.
Adenine pairs with thymine through three H-bonds
b.
Adenine does not pair with thymine
c.
Adenine pairs with thymine through two H-bonds
Correct Answer
d.
Adenine pairs with thymine through one H-bond
Step-by-Step AI Explanation
Verified Method
In DNA, adenine pairs with thymine via two hydrogen bonds, while guanine pairs with cytosine via three hydrogen 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 polysaccharide containing glycosidic bonds, while insulin is a protein containing 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 units linked by glycosidic bonds. Insulin is a hormone composed 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 involving two different carbonyl compounds (one with alpha hydrogens like acetophenone and one without like benzaldehyde) 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 the potential difference between the fixed layer and the diffused layer of ions. It is directly related to the stability of the colloidal system.
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.
+ R effect of – CH3 groups
Step-by-Step AI Explanation
Verified Method
Tertiary butyl carbocation has 9 alpha hydrogens while secondary has 6. Greater number of alpha hydrogens leads to more hyperconjugation, stabilizing the carbocation.
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 adiabatic expansion, q = 0. In free expansion (expansion against vacuum), work done (w) = 0. From First Law of Thermodynamics, ΔU = q + w = 0 + 0 = 0. For an ideal gas, ΔU depends on T, so ΔT = 0.
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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.
(iii) (iv) (i) (ii)
b.
(iv) (iii) (ii) (i)
c.
(i) (ii) (iii) (iv)
d.
(ii) (i) (iv) (iii)
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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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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: N = 14, Ar = 40]
a.
15 bar
b.
18 bar
c.
9 bar
d.
12 bar
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Hydrolysis of sucrose is given by the reaction Sucrose + H2O -> Glucose + Fructose. If the equilibrium constant (Kc) is 2 × 10^13 at 300 K, the value of -DeltaG at the same temperature will be :
a.
8.314 J mol–1 K–1 × 300 K × ln(3 × 10^13)
b.
–8.314 J mol–1 K–1 × 300 K × ln(4 × 10^13)
c.
–8.314 J mol–1 K–1 × 300 K × ln(2 × 10^13)
d.
8.314 J mol–1 K–1 × 300 K × ln(2 × 10^13)
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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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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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Match the following and identify the correct option:
(a) CO(g) + H2(g) (i) Mg(HCO3)2 + Ca(HCO3)2
(b) Temporary hardness of water (ii) An electron deficient hydride
(c) B2H6 (iii) Synthesis gas
(d) H2O2 (iv) Non-planar structure
a.
(iii) (iv) (ii) (i)
b.
(i) (iii) (ii) (iv)
c.
(iii) (i) (ii) (iv)
d.
(iii) (ii) (i) (iv)
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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(OH)2
b.
CuCO3.Cu(OH)2
c.
CuSO4
d.
[Cu(NH3)4]2+
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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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