SADHIK- IIT- JEE MAINS
Date : 09.04.2014
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Marks : 100
PHYSICS
The electric field at a point on equatorial line of a dipole and direction of the dipole
moment
a) will be parallel
b) will be in opposite direction
c) will be perpendicular
d) Are not related
The pair of particles which have same acceleration in a uniform electric field is
a) Proton and Deutron
b) Proton and alpha particle
c) Electron and Positron
d) Deutron and alpha particle
A simple pendulum of period T has a metal bob which is negatively charged. If it is
allowed to oscillate above a positively charged metal plate, its period will be
a) Remains equal to T b) Less than T c) Greater than T d) Infinite
The path of a charged particle projected into a uniform traverse electric field is
a) circle
b) hyperbola
c) parabola
d) ellipse
Two point charges +Q and +Q are separated by a certain distance. The resultant
electric field is
a) zero at the mid point of the line joining the charges
b) parallel to the perpendicular bisector of the line joining the charges at any point on the
bisector
c) zero at any point on the bisector in a direction parallel to the line joining the charges
d) All the above are true
The wrong statement about electric lines of force is
a) These originated from positive charge and end negative charge
b) They do not intersect each other at a point
c) They have the same from for a point charge and a sphere
d) They have physical existence
If the electric lines of force are as shown in the figure and electric intensity at A and B
are EA and EB respectively then
a) EA < EB
b) EA > EB
c) EA = EB
d) EA = EB = 0
The p.d (VB – VC) between two points from C to B
a) does not depend on the path
b) depends on the path
c) independent of path
d) independent of electric field
A charge Q is at the centre of a semicircle of diameter AB. If work done in moving a
charge q along the semicircle is W1 and work done in moving the same charge q along
the path ACB is W2 then
a) W1 > W2
b) W1 < W2
c) W1 = W2 = 0
d) W1 = W2  0
If two conducting spheres are separately charged and then brought into contract
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a) The total energy of the spheres is conserved
b) The total charge on the spheres is conserved
c) Both the total energy and charge are conserved
d) The final potential is always the mean of the original potential of the two spheres
On the perpendicular bisector of an electric dipole, the electric intensity E and
potential V are
a) E = 0, V = 0
b) E  0, V  0
c) E  0, V = 0
d) E = 0, V  0
̅
Charges +q, -q, +q, -q are placed on the vertices of a square ABCD respectively. Let 𝑬
be the electric field and V the potential at the centre. If the charges on A and B are
interchanged with those on D and C respectively, then:
a) ̅
E remains unchanged, V changes
b) both ̅
E and V charge
̅
̅
c) E and V remain unchanged
d) E changes, V remains unchanged
An electric dipole kept in a uniform electric field experiences
a) a force and a torque
b) a force but not a torque
c) a torque but not a force
d) neither a force nor a torque
⃗ placed in a uniform electric field ⃗𝑬
⃗ has minimum
An electric dipole of moment ⃗𝑷
⃗ is
⃗ and ⃗𝑬
potential energy when the angle between 𝒑
𝜋
3𝜋
a) zero
b)
c) 
d)
2
2
What is the angle between the electric dipole moment and the electric field strength
due to it on the equatorial line
a) 0o
b) 90o
c) 180o
d) None of these
An electric dipole is kept in non-uniform electric field. It experiences
a) A force and a torque
b) A force but not a torque
c) A torque but not a force
d) neither a force nor a torque
An electric dipole consisting of two opposite charges 2 x 10 -6 C each separated by a
distance of 3 cm is placed in an electric field of 2 x 105 N/C. The maximum torque on
the dipole will be
a) 12 x 10-1 Nm b) 12 x 10-3 Nm c) 24 x 10-1 Nm d) 24 x 10-3 Nm
If Ea be the electric field strength of a short dipole at a point on its axial line and E e
that on the equatorial line at the same distance, then
a) Ee = 2Ea
b) Ea = 2Ee
c) Ea = Ee d) None of these
A proton and an electron are placed 1.6 cm apart in free space. Find the magnitude of
electrostatic force between them. What is the nature of this force.
a) 9 x 10-25 repulsion
b) 90 x 10-25 repulsion
c) 9 x 10-25 N; attractive
d) 9 x 1025 attractive
Two charges of equal magnitude and at a distance ‘r’ exert a force F on each other. If
the charges are halved and distance between them is doubled, then the new force
acting on each charge is
a) F/8
b) F/4
c) 4F
d) F/16
CHEMISTRY
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Lucas reagent is
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a) anhydrous ZnCl2 and conc. HCl
b) anhydrous ZnCl2 and conc. HNO3
c) hydrous ZnCl2 and conc. HNO3
d) hydrous ZnCl2 and conc. HCl
The compound on dehydrogenation gives a ketone. The original compound is :
a) carboxylic acid
b) tertiary alcohol
c) primary alcohol
d) secondary alcohol
Rectified spirit contains :
a) 75% alcohol
b) 95.5% alcohol
c) 56% alcohol
d) 100% alcohol
Formaldehyde forms an addition product with CH3MgI which on hydrolysis gives :
a) ethyl iodide
b) ethyl alcohol
c) methyl alcohol
d) methyl iodide
Wood spirit is known as
a) methanol
b) ethanol
c) acetone
d) benzene
Order of esterfication of alcohol is :
a) T > S > P
b) S > T > P
c) P > S > T
d) none of these
An enzyme which changes can sugar into glucose and fructose is known as :
a) zymase
b) maltase
c) invertase
d) diastase
Which of the following reagents can convert acetic acid into ethanol?
a) Sn + HCl
b) H2 + Pt
c) LiAlH4+ether
d) Na + alcohol
The reaction of ethylene glycol with PI3 gives :
a) ICH2CH2I
b) H2C=CH2
c) H2C=CHI
d) IHC=CHI
Which of the following enzymes converts glucose into ethyl alcohol
a) Diastase
b) Invertase
c) Maltase
d) Zymase
Given are cyclohexanol (I), acetic acid (II), 2,4,6-trinitrophenol (III) and phenol (IV).
In these the order of decreasing acidic character will be:
a) II > III > IV > I
b) II > III > I > IV
c) III > II > IV > I
d) III > IV > II > I
Lucas test is used for the determination of:
a) alcohols
b) phenols
c) carboxylic acids
d) aldehydes
Which is the best reagent to convert cyclohexanol into cyclohexene?
a) Conc. HCl
b) Conc. HBr
c) Conc. H3PO4 d) Conc. HCl with ZnCl2
The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is:
a) acidic permanganate
b) acidic dichromate
c) chromic anhydride in glacial acetic acid d) pyridinium chlorochromate
Starch is converted to ethanol by fermentation, the sequence of enzymes used is
a) amylase, maltase, zymase
b) diastase, maltase, zymase
c) amylase, invertase, zymase
d) amylase, zymase, maltase
In the following sequence of reactions,
𝐏+𝑰𝟐
𝐌𝐠
𝐇𝐂𝐇𝐎
𝐇𝟐 𝐎
CH3 CH2 OH → (A) → (B) →
(C) → (D)
Enter
the compound D is:
a) propanal
b) butanal c) n-butyl alcohol
d) n-propyl alcohol
37. What are X and Y in the following reaction sequence:
𝐂𝒍𝟐
𝑪𝒍𝟐
C2H5OH → (X) → U
a) C2H5Cl,CH3CHO
b) CH2CHO,CH3CO2H
c) CH3CHO,CCl3CHO
d) C2H5Cl,CCl3CHO
38. Carbolic acid is:
a) C6H5OH
b) C6H6
c) C6H5COOH
d) C6H5CHO
39. The reaction of ethylene glycol with PI3 gives :
a) ICH2CH2I
b) H2C=CH2
c) H2C=CHI
d) IHC=CHI
40. Which of the following enzymes converts glucose into ethyl alcohol
a) Diastase
b) Invertase
c) Maltase
d) Zymase
BOTANY
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Embryo is present but true vasculature is absent in phylum :a) Cyanophyta
b) Tracheophyta
c) Bryophyta
d) Chlorophyta
The unique feature of Bryophytes compared to other green plant groups is that :a) They produce spores
b) They lack vascular tissue
c) They lack root
d) Their sporophyte is attached to gametophyte
In Bryophytes diploid number of chromosomes occur in :
a) Gametes
b) Spores c) Spore mother cells
d) Nuclei of gametes
The plant used as an alternative of cotton :a) Sphagnum
b) Funaria
c) Riccia
d) Andria
The Antherozoids of Bryophytes possess:a) 2- Flagella
b) 1-Flagella
c) Multiflagella
d) No-flagella
Which of the following is bryophyte :a) Funaria
b) Volvox
c) Chlorella
d) Spirullina
The group bryophyte includes :a) Liverworts and ferns
b) Liverworts and club moss
c) Moss and ferns
d) Liverworts and moss
A leafy non vascular plant with parasitic sporophytic generation should properly be
classififed in
a) Thallophyta
b) Bryophyta
c) Pteridophyta
d) Spermatophyta
Bryophyta includes :a) Mosses
b) Club mosses
c) Spike mosses
d) All the above
A leafy gametophyte plant with multicellular rhizoids and sporophyte differentiated
in foot, seta and capsule should belong to :a) Psilopsida
b) Hepaticopsida
c) Byropsida
d) Lycopsida
Jacket less archegonia occur in :a) Riccia
b) Funaria
c) Sphagnum
d) Anthoceros
Bryophytes differ from thallophytes in having :a) Embryo
b) Rhizoids
c) Sterile jacket around sex organs
d) All the above
Spores do not form protonema but directly grow into flat branching thallus in :a) Liverworts
b) Mosses
c) Ferns
d) Gymnosperms
In bryophyte, simplest sporophyte occur in :
a) Riccia
b) Marchantia
c) Funaria
d) Anthoceros
In which of the following bryophytes there are gemmae, the means of vegetative
reproduction:-
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a) Riccia
b) Marchantia
c) Sphagnum
d) Anthoceros
A saprophytic bryophyte found in the Himalayas
a) Sphagnum
b) Marchantia
c) Porella
d) Buxbaumia
Which of the following is example of moss :a) Funaria
b) Riccia
c) Anthoceros
d) Pellia
In Bryophytes what is absent
a) Embryo formation
b) Fertilization
c) Motile gametes
d) True roots and vascular tissue
In bryophytes fertilization takes place :a) At low temp.
b) In dry condition
c) In presence of water
d) In above all situation
Which statement is true about bryophytes that :a) They are not photosynthetic
b) Zygote produces gametophyte on germination
c) Spores form gametophyte pant on germination
d) They have vascular tissues
ZOOLOGY
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The contraction of the heart of frog commences from:
a) left auricle
b) right auricle
c) interauricular septum d) sinus venosus
The valves which allow blood to flow from the ventricles into the arteires and not in
the opposite direction are:
a) Bicuspid and tricuspid valve
b) Aortic valve and mitral valve
c) Semilunar valve and tricuspid valve
d) AV valve (Atrioventricular valve) and semilunar valve
Systemic heart refers to:
a) entire heart in lower vertebrates
b) the two ventricles together in humans
c) left auricle and left ventricle in higher ventricles
d) the heart that contracts under stimulation from nervous system
Human heart is:
a) digenic
b) myogenic
c) neurogenic
d) cardiogenic
The impulse of heartbeat originates from:
a) SA node
b) AV node
c) Vagus node
d) Cardiac nerve
What happens when the pacemaker is nonfunctional?
a) Only ventricles will contract rhythmically
b) Only the auricles will contract rhythmically
c) Auricles and ventricles contract simultaneously
d) The cardiac muscles do not contract in a coordinated manner rhythmically
e) Cardiac muscles will contract in a coordinated manner rhythmically
‘Bundle of His’ is a group of:
a) ganglia
b) nerve fibres
c) muscle fibres d) connective tissues
The normal heart rate 72 beats per minute is maintained by:
a) SA node
b) AV node
c) Ventricles
d) Purkinje fibres
In humans, blood passes from the post caval to the diastolic right atrium of the heart
due to:
a) suction pull
b) pushing open of the venous valves
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c) stimulation of the sinoauricular node
d) pressure difference between the postcaval and atrium
ECG is a measure of:
a) rate of heartbeat
b) ventricular contraction
c) volume of blood pumped
d) difference in electric potential
ECG is least effective in detecting abnormalities in:
a) cardiac rhythm
b) coronary blood flow
c) cardiac contractility
d) atrioventricular conduction
Typical ‘lubb-dupp’ sounds heard during heartbeat are due to:
a) closing of semilunar valves
b) blood under pressure through aorta
c) closing of bicuspid and tricuspid valves
d) closure of bicuspid-tricuspid valves followed by semilunar valves
The sounds of Korotkoff are produced by:
a) closing of the AV valves
b) elastic recoil of the aorta
c) closing of semilunar valves
d) the turbulent flow of blood through an artery
Percentage of total blood pumped into human kidneys in each cardiac output is:
a) 15%
b) 20%
c) 25%
d) 50%
An increase in blood volume will cause:
a) a decrease in ADH secretion
b) an increase in Na+ excretion in the urine
c) a decrease in renin secretion
d) all of the above
The pulse pressure is a measure of the:
a) number of heartbeats per minute b) sum of the diastolic and systolic pressure
c) difference between the arterial and venous pressure
d) difference between the systolic and diastolic pressure
Pulse beat is measured from:
a) veins
b) nerves
c) arteries
d) capillaries
Physiology of blood circulation was first described by:
a) Carl Correns
b) William Harvey c) Karl Landsteiner
d) Andreas Vesalius
In rabbit, oxygenated blood flows from:
a) right ventricle to aorta during ventricular systole
b) left auricle to left ventricle during auricular systole
c) right auricle to right ventricle during ventricular systole
d) pulmonary vein to left auricle during auricular systole
Carotid labyrinth contains:
a) baroreceptors b) phonoreceptors c) chemoreceptors d) olfactoreceptors
ENGLISH
Choose the antonym for each of the words :-
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Which words means the opposite of shameful?
a) honorable
b) animated
c) fickle
Which words means the opposite of vague?
a) hazy
b) skilled
c) definite
Which words means the opposite of vulnerable?
a) frantic
b) feeble
c) secure
Which words means the opposite of distress?
a) comfort
b) reward
c) trouble
Which words means the opposite of unity?
a) discord
b) stimulation
c) consent
Which words means the opposite of clarify?
a) explain
b) dismay
c) obscure
Which words means the opposite of grant?
a) deny
b) consume
c) allocate
Which words means the opposite of impartial?
a) complete
b) prejudiced
c) unbiased
Which words means the opposite of prompt?
a) punctual
b) slack
c) tardy
Which words means the opposite of delay?
a) slow
b) hasten
c) pause
Which words means the opposite of soothe?
a) increase
b) comfort
c) aggravate
Which words means the opposite of moderate?
a) original
b) average
c) final
Which words means the opposite of reveal?
a) disclose
b) achieve
c) retreat
Which words means the opposite of initial?
a) first
b) crisis
c) final
Which words means the opposite of brittle?
a) flexible
b) breakable
c) grating
Which words means the opposite of capable?
a) unskilled
b) absurd
c) apt
Which words means the opposite of stray?
a) remain
b) inhabit
c) wander
Which words means the opposite of dainty?
a) delicate
b) coarse
c) harsh
Which words means the opposite of craving?
d) modest
d) tender
d) complicated
d) compromise
d) neglect
d) provide
d) provoke
d) erudite
d) regular
d) desist
d) delight
d) excessive
d) conceal
d) right
d) thin
d) able
d) incline
d) delicious
a) desire
b) repudiation
c) motive
100. Which words means the opposite of ferocious?
a) docile
b) savage
c) explosive
d) revulsion
d) noble