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IOM 2004
1 / 50
Purification of aluminium by electrolytic process is
Hoopes process purifies aluminium.
2 / 50
The r.m.s. velocity of gas molecules is given by:
v_rms = √(3RT/M)=√(3P/ρ)=√(3PV/M).
3 / 50
Pharyngeal nephridia present in
Located in 4th,5th,6th segments.
4 / 50
Which one is a parasite and also a vector?
Flea is ectoparasite and vector.
5 / 50
The wood of gymnosperms exclusively consists of:
Gymnosperm xylem mainly contains tracheids.
6 / 50
Which one shows the floral characters of Solanaceae?
Solanaceae has actinomorphic, bisexual flowers with K(5) C(5) A5 G̲(2).
7 / 50
Compound A on AgNO₃ treatment followed by hydrolysis gives acetic acid
Acetyl chloride hydrolyses to acetic acid.
8 / 50
The vascular bundle having phloem in the centre and surrounded by xylem is termed:
Amphivasal (leptocentric) bundles have central phloem surrounded by xylem.
9 / 50
Part of ear distinguishing pitches
Organ of Corti analyzes frequencies.
10 / 50
In a given atom no two electrons can have the same value of all the quantum numbers. This is called
Pauli exclusion principle states no two electrons in an atom have identical four quantum numbers.
11 / 50
Eggs of cockroach is
Insect eggs are centrolecithal.
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Identify Z: C₂H₅Cl --alc.KOH→ X --Br₂→ Y --KCN→ Z
Elimination gives ethene, bromination gives 1,2-dibromoethane, KCN substitutes one Br to form bromoethyl cyanide as keyed.
13 / 50
Speed of sound in air at NTP is300 m/s. Pressure increased fourfold; speed becomes:
At constant temperature, speed in gas is independent of pressure.
14 / 50
Biological sequence
Energy flows producer→consumer→reducer.
15 / 50
Primary endosperm nucleus is usually
Fusion of one sperm with two polar nuclei forms a triploid PEN.
16 / 50
Projectile launched at2×escape velocity. Speed in free space:
v∞²=v²−Ve²=4Ve²−Ve²=3Ve².
17 / 50
Straight ovule is called
Orthotropous ovules are straight.
18 / 50
Correct electronic configuration of Fe³⁺ ion?
Fe³⁺ = [Ar]3d⁵.
19 / 50
A circular disc of mass m and radius r rotates with rim speed v. Its kinetic energy is:
K=(1/2)Iω²=(1/2)(1/2mr²)(v²/r²)=mv²/4.
20 / 50
Boat3m×2m sinks1cm with man. Mass of man:
Displaced volume=3×2×0.01=0.06m³→60kg.
21 / 50
50 μF capacitor charged to10 V. Energy:
U=½CV²=0.5×50×10⁻6×100=2.5×10⁻3J.
22 / 50
An alkyl halide can be converted to alcohol by
OH⁻ substitutes halide.
23 / 50
Protozoan class not named after locomotory organ
Sporozoa lack locomotory organ.
24 / 50
4Ω wire bent at midpoint and twisted together. New resistance:
Each half 2Ω in parallel gives1Ω.
25 / 50
Cells after meiosis compared to parent diploid
Meiosis produces haploid cells with half DNA.
26 / 50
Greek word from which ecology is derived
Ecology derives from Greek oikos.
27 / 50
Common mercury thermometer measures:
Mercury freezes near −39°C and boils at 357°C.
28 / 50
Minimum speed at lowest point for complete vertical circle:
Minimum bottom speed=√5gl.
29 / 50
Usnea is a:
Usnea is a fruticose lichen.
30 / 50
Living fossil
Ginkgo is a classic living fossil plant.
31 / 50
Calgon used as water softener is
Calgon is sodium hexametaphosphate.
32 / 50
Dentition in frog
Frogs have homodont teeth.
33 / 50
Hormone concerned with cell division
Cytokinins promote cell division.
34 / 50
Yeast anaerobic respiration converts glucose into
Alcoholic fermentation yields ethanol and CO₂.
35 / 50
Number of ions produced from one molecule of potassium ferricyanide in aqueous solution
K₃[Fe(CN)₆] dissociates into 3 K⁺ and one complex ion.
36 / 50
Monocot family with ligule
Ligule is characteristic of Zingiberaceae.
37 / 50
Tapeworm using pig as intermediate host
Pig is intermediate host of T. solium.
38 / 50
When SO₂ reacts with iron
Iron is oxidized by sulfur dioxide under suitable conditions.
39 / 50
1kg mass accelerated up at5m/s² then down at5m/s². Ratio of tensions:
T_up=m(g+a), T_down=m(g−a). For g=10,a=5 ratio=15:5=3:1.
40 / 50
Mutation theory proposed by
Hugo de Vries proposed mutation theory.
41 / 50
Which is Mohr's salt?
Mohr's salt is ferrous ammonium sulfate.
42 / 50
Hindbrain of frog consists of
Hindbrain includes cerebellum and medulla.
43 / 50
When will Kp and Kc have same numerical value?
Kp=Kc when Δn(gas)=0.
44 / 50
Half-life of zero-order reaction (k, initial concentration=a)
t½=a/(2k).
45 / 50
Codon is contained in
Codons are present on mRNA.
46 / 50
Thin membrane enveloping chromosome
Chromosomal matrix surrounds chromonemata.
47 / 50
Atomic hydrogen produces formaldehyde with
CO + 2H → HCHO.
48 / 50
Carpels are equivalent to
Carpels are megasporophylls.
49 / 50
Metal bar heated 0°C to100°C, α=10⁻⁵ K⁻¹. Percentage increase in length?
ΔL/L=αΔT=10⁻⁵×100=10⁻³=0.1%.
50 / 50
Diver at depth1m sees outside world in circle radius:
r=h tan c=h/√(μ²−1).
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