Question 61:

The ascending acidity order of given H atoms is:

1. C < D < B < A
2. A < B < C < D
3. A < B < D < C
4. D < C < B < A

Question 62:

Match List I (Bio Polymer) with List II (Monomer):

A. Starch | I. Nucleotide
B. Cellulose | II. α-glucose
C. Nucleic acid | III. β-glucose
D. Protein | IV. α-amino acid

1. A-II, B-I, C-III, D-IV
2. A-IV, B-II, C-I, D-III
3. A-I, B-III, C-IV, D-II
4. A-II, B-III, C-I, D-IV

Question 63:

Match List I (Compound) with List II (pKa value):

A. Ethanol   | II. 15.9
B. Phenol   | I. 10.0
C. m-Nitrophenol | IV. 8.3
D. p-Nitrophenol | III. 7.1

1. A-I, B-II, C-III, D-IV
2. A-IV, B-I, C-II, D-III
3. A-III, B-IV, C-I, D-II
4. A-II, B-I, C-IV, D-III

Question 64:

Which reaction is correct?

1. Incorrect reaction
2. Correct reaction
3. Partially correct reaction
4. Not valid reaction

Question 65:

IUPAC name of the compound?

1. Cyclohex-1-en-2-ol
2. 1-Hydroxyhex-2-ene
3. Cyclohex-1-en-3-ol
4. Cyclohex-2-en-1-ol

Question 66:

Correct IUPAC name of K₂MnO₄ is?

1. Potassium tetraoxopermanganate(VI)
2. Potassium tetraoxidomanganate(VI)
3. Dipotassium tetraoxidomanganate(VII)
4. Potassium tetraoxidomanganese(VI)

Question 67:

Reagent giving red ppt with Ni²⁺ in basic medium?

1. Sodium nitroprusside
2. Neutral FeCl₃
3. Meta-dinitrobenzene
4. Dimethyl glyoxime

Question 68:

Phenol + CHCl₃ + NaOH => acid hydrolysis => product= ? => 2-hydroxybenzaldehyde

1. Salicylic acid
2. Benzene-1,2-diol
3. Benzene-1,3-diol
4. 2-Hydroxybenzaldehyde

Question 69:

Match H spectral series vs region: Lyman/Balmer/Paschen/Pfund => UV/Visible/IR/IR

1. A-II, B-III, C-I, D-IV
2. A-I, B-III, C-II, D-IV
3. A-II, B-IV, C-III, D-I
4. A-I, B-II, C-III, D-IV

Question 70:

A brown ppt with Nessler’s reagent => gas=? => NH₃

1. H₂S
2. CO₂
3. NH₃
4. Cl₂

Question 71:

The product A in a diazotization + Sandmeyer reaction => chlorobenzene

1. ...
2. ...
3. Chlorobenzene
4. ...

Question 72:

Identify reagents for a certain conversion => DIBAL-H, NaOH(alc), Zn/HCl => correct set?

1. A=LiAlH₄, B=NaOH(aq), C=NH₂NH₂/KOH
2. A=LiAlH₄, B=NaOH(alc), C=Zn/HCl
3. A=DIBAL-H, B=NaOH(aq), C=NH₂NH₂/KOH
4. A=DIBAL-H, B=NaOH(alc), C=Zn/HCl

Question 73:

Strong reducing agent among Ce=58, Eu=63, Gd=64, Lu=71 => ? => Eu²⁺

1. Lu³⁺
2. Gd³⁺
3. Eu²⁺
4. Ce⁴⁺

Question 74:

Which chromatography is based on differential adsorption? => Column & TLC => (A,B only)

1. B only
2. A only
3. A & B only
4. C only

Question 75:

Statements re: Zn, Cd, Hg => correct ones? => B & D only

1. B, D only
2. B, C only
3. A, D only
4. C, D only

Question 76:

Highest first I.E. among Si, Al, N, C => ? => N

1. Si
2. Al
3. N
4. C

Question 77:

Alkyl halide => alkyl isocyanide => reagent=? => AgCN

1. NaCN
2. NH₄CN
3. KCN
4. AgCN

Question 78:

Which has geometrical isomerism? => CH₃CH=CHBr

1. CH₃CH=CHCH₃
2. CH₂=CBr₂
3. CH₃CH=CHBr
4. Cyclohexane

Question 79:

I: F has most negative EGE in group => false. II: O has least negative EGE in group => true => so (I false, II true)

1. Both true
2. I true, II false
3. Both false
4. I false, II true

Question 80:

Oxygen’s anomaly => small size + high electronegativity

1. Large size, high EN
2. Small size, low EN
3. Small size, high EN
4. Large size, low EN

Question 81:

Total antibonding MOs from 2s,2p in a diatomic => 4

Question 82:

Brown ring test complex => Fe in +1 state

Question 83:

NH₃ formation => [N₂]=2×10⁻², [H₂]=3×10⁻², [NH₃]=1.5×10⁻² => Kc=? =>417

Question 84:

0.8 M H₂SO₄, density=1.06 => molality=? => 815×10⁻³ m

Question 85:

50 mL NaOH neutralizes 50 mL 0.5 M oxalic => mass(NaOH)=4 g

Question 86:

2-formylhex-4-enoic acid => total σ+π bonds=22

Question 87:

Bromine-82 half-life=36 h => fraction left after 24 h=? =>0.63

Question 88:

ΔH(vap)(CCl₄)=30.5 kJ/mol => 284 g => heat=? =>56 kJ

Question 89:

AuCl₄⁻ electrolyzed => cathode mass gained 1.314 g => total charge=2 F

Question 90:

Zero dipole among CH₄,BF₃,H₂O,HF,NH₃,CO₂,SO₂ => total=? =>3