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IOM 2006
1 / 50
Floral formula Br ⊕ ⚥ K(5) C(5) A5 G̲(2) belongs to:
Typical floral formula of Solanaceae.
2 / 50
Curie temperature is when:
Above Curie temperature ferromagnets become paramagnetic.
3 / 50
Object at distance p times focal length from diverging lens. Magnification:
Using lens formula with f<0 gives m=1/(1+p).
4 / 50
Hormone primarily responsible for cell division in plants?
Cytokinins stimulate cell division.
5 / 50
Potometer measures:
Potometer estimates transpiration rate.
6 / 50
Tail shedding in lizards:
Autotomy aids escape.
7 / 50
Swimmer speed4 m/s heads30° upstream to cross straight. River speed:
River speed=4 sin30=2.
8 / 50
Hybridization in [Fe(CN)₆]⁴⁻:
Strong-field CN⁻ gives inner orbital octahedral complex.
9 / 50
Reaction chain CH₃COOH→NH₃→A→Δ→E→P₂O₅→C. Product C?
Ammonium acetate on heating forms acetamide, dehydrated by P₂O₅ to acetonitrile.
10 / 50
Interchange between chromatids:
Crossing over occurs in meiosis I.
11 / 50
Rate of diffusion A is 5× B. Density ratio A:B?
r∝1/√d, so dA/dB=(1/5)²=1/25.
12 / 50
Series thermal conductance:
Equal lengths=>keq=2k1k2/(k1+k2).
13 / 50
Response to touch:
Touch response is thigmotaxis.
14 / 50
Parapodia found in:
Polychaetes possess parapodia.
15 / 50
Sponges differ by presence of:
Choanocytes are characteristic.
16 / 50
CO₂ absorbed in photosynthesis is almost:
Photosynthetic quotient is about 1.
17 / 50
Which one shows tautomerism?
Primary/secondary nitro compounds show nitro–aci tautomerism.
18 / 50
Liver of frog consists of:
Frog liver has three lobes.
19 / 50
Stone dropped from height h reaches in t. Position after t/3 from ground:
Distance fallen=h/9 so height above ground=8h/9.
20 / 50
In YDSE β=λD/d. Ratio d/D:
d/D=λ/β.
21 / 50
Diphyllobothrium is:
D. latum is fish tapeworm.
22 / 50
0.1kg ball at6 m/s hits0.2kg at rest; rebounds2 m/s. Velocity of B:
Momentum conservation gives4 m/s.
23 / 50
Sepals/petals touch but do not overlap:
Valvate aestivation.
24 / 50
Gossypium hirsutum is:
It is upland cotton.
25 / 50
Which reacts with KCN to form benzoin?
Benzaldehyde undergoes benzoin condensation.
26 / 50
In earthworm septa absent in segments:
Anterior segments lack septa.
27 / 50
Hypogynous flower seen in:
China rose has superior ovary.
28 / 50
Organism converting sugar to alcohol:
Yeast performs alcoholic fermentation.
29 / 50
Cell emf X, terminal voltage Y across R. Internal resistance:
I=Y/R and X=Y+Ir.
30 / 50
Leafy stipules found in:
Lathyrus has leafy stipules.
31 / 50
Energy released in aerobic respiration:
Complete oxidation of glucose releases ~686 kcal; key often 674 kcal.
32 / 50
Car speed one-tenth sound. Siren1000Hz heard1100Hz. Car speed:
f'=f(v+vo)/v=1.1f so vo=0.1v≈34m/s.
33 / 50
Straight ovules with chalaza at base and micropyle at tip are:
Orthotropous ovules are straight.
34 / 50
If gT²=2R for projectile, angle of projection:
R=v²sin2θ/g,T=2vsinθ/g ⇒ gT²/2R=tanθ=√3.
35 / 50
For N₂ + 3H₂ ⇌ 2NH₃ + heat
Δn = 2−4 = −2, so Kp = Kc(RT)^−2.
36 / 50
Liver rot caused by:
Fasciola hepatica causes liver rot.
37 / 50
Chlorine reacts with benzaldehyde to give:
Oxidative chlorination forms benzoyl chloride.
38 / 50
In the given nuclear reactions, X and Y are respectively:
Balancing mass and atomic numbers gives X = neutron and Y = proton.
39 / 50
Large number of grana occurs in:
Grana are stacks of thylakoids in chloroplasts (plastids).
40 / 50
Commercial sodium by electrolysis of fused NaCl:
Downs process is used.
41 / 50
Ksp of AB₂=1.08×10⁻¹³. Molar solubility?
Ksp=4s³, s≈3×10⁻⁵ M? Actually 4(3e-5)^3≈1.08e-13.
42 / 50
Distinct feature of eutherian mammals:
Eutherians are placental mammals.
43 / 50
With Baeyer's reagent, ethylene and acetylene form:
Ethylene gives glycol; acetylene gives oxalic acid.
44 / 50
Correct statement on charging by rubbing:
Glass rubbed with flannel/silk becomes positive.
45 / 50
Association of fungus and roots:
Mycorrhiza is fungus-root association.
46 / 50
Carrier of Trypanosoma:
African trypanosomiasis is transmitted by tsetse fly.
47 / 50
Ethyl alcohol and acid equimolar; 2/3 consumed. Equilibrium constant?
K=(2/3×2/3)/(1/3×1/3)=4.
48 / 50
Stars λmax=320nm,400nm. Temperature ratio:
Wien law T∝1/λ.
49 / 50
In Cannizzaro reaction:
One aldehyde molecule is reduced to alcohol.
50 / 50
Aerial adaptation:
Volant animals fly.
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