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IOM 2004
1 / 50
Minimum speed at lowest point for complete vertical circle:
Minimum bottom speed=√5gl.
2 / 50
Which is Mohr's salt?
Mohr's salt is ferrous ammonium sulfate.
3 / 50
Pharyngeal nephridia present in
Located in 4th,5th,6th segments.
4 / 50
50 μF capacitor charged to10 V. Energy:
U=½CV²=0.5×50×10⁻6×100=2.5×10⁻3J.
5 / 50
Part of ear distinguishing pitches
Organ of Corti analyzes frequencies.
6 / 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%.
7 / 50
4Ω wire bent at midpoint and twisted together. New resistance:
Each half 2Ω in parallel gives1Ω.
8 / 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.
9 / 50
Dentition in frog
Frogs have homodont teeth.
10 / 50
Mutation theory proposed by
Hugo de Vries proposed mutation theory.
11 / 50
When will Kp and Kc have same numerical value?
Kp=Kc when Δn(gas)=0.
12 / 50
Which one shows the floral characters of Solanaceae?
Solanaceae has actinomorphic, bisexual flowers with K(5) C(5) A5 G̲(2).
13 / 50
When SO₂ reacts with iron
Iron is oxidized by sulfur dioxide under suitable conditions.
14 / 50
Straight ovule is called
Orthotropous ovules are straight.
15 / 50
Hormone concerned with cell division
Cytokinins promote cell division.
16 / 50
The vascular bundle having phloem in the centre and surrounded by xylem is termed:
Amphivasal (leptocentric) bundles have central phloem surrounded by xylem.
17 / 50
Hindbrain of frog consists of
Hindbrain includes cerebellum and medulla.
18 / 50
Diver at depth1m sees outside world in circle radius:
r=h tan c=h/√(μ²−1).
19 / 50
Half-life of zero-order reaction (k, initial concentration=a)
t½=a/(2k).
20 / 50
Greek word from which ecology is derived
Ecology derives from Greek oikos.
21 / 50
Boat3m×2m sinks1cm with man. Mass of man:
Displaced volume=3×2×0.01=0.06m³→60kg.
22 / 50
Thin membrane enveloping chromosome
Chromosomal matrix surrounds chromonemata.
23 / 50
Carpels are equivalent to
Carpels are megasporophylls.
24 / 50
Tapeworm using pig as intermediate host
Pig is intermediate host of T. solium.
25 / 50
An alkyl halide can be converted to alcohol by
OH⁻ substitutes halide.
26 / 50
Eggs of cockroach is
Insect eggs are centrolecithal.
27 / 50
Yeast anaerobic respiration converts glucose into
Alcoholic fermentation yields ethanol and CO₂.
28 / 50
Projectile launched at2×escape velocity. Speed in free space:
v∞²=v²−Ve²=4Ve²−Ve²=3Ve².
29 / 50
Monocot family with ligule
Ligule is characteristic of Zingiberaceae.
30 / 50
Living fossil
Ginkgo is a classic living fossil plant.
31 / 50
Codon is contained in
Codons are present on mRNA.
32 / 50
Correct electronic configuration of Fe³⁺ ion?
Fe³⁺ = [Ar]3d⁵.
33 / 50
Primary endosperm nucleus is usually
Fusion of one sperm with two polar nuclei forms a triploid PEN.
34 / 50
Compound A on AgNO₃ treatment followed by hydrolysis gives acetic acid
Acetyl chloride hydrolyses to acetic acid.
35 / 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.
36 / 50
Cells after meiosis compared to parent diploid
Meiosis produces haploid cells with half DNA.
37 / 50
Biological sequence
Energy flows producer→consumer→reducer.
38 / 50
Atomic hydrogen produces formaldehyde with
CO + 2H → HCHO.
39 / 50
The r.m.s. velocity of gas molecules is given by:
v_rms = √(3RT/M)=√(3P/ρ)=√(3PV/M).
40 / 50
Purification of aluminium by electrolytic process is
Hoopes process purifies aluminium.
41 / 50
The wood of gymnosperms exclusively consists of:
Gymnosperm xylem mainly contains tracheids.
42 / 50
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.
43 / 50
Protozoan class not named after locomotory organ
Sporozoa lack locomotory organ.
44 / 50
Usnea is a:
Usnea is a fruticose lichen.
45 / 50
Calgon used as water softener is
Calgon is sodium hexametaphosphate.
46 / 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.
47 / 50
Which one is a parasite and also a vector?
Flea is ectoparasite and vector.
48 / 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.
49 / 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.
50 / 50
Common mercury thermometer measures:
Mercury freezes near −39°C and boils at 357°C.
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