JIPMER MBBS 2014Contact Number: 9667591930 / 8527521718JIPMER MBBS 2014Contact Number: 9667591930 / 8527521718A ball is released from a certain height which losses 50% of its kinetic energy on striking the ground, it will attain a height again of:
1. \(\frac14\)th of the initial height
2. \(\frac12\)th of the initial height
3. \(\frac34\)th of the initial height
4. None of the above
If applied torque on a system is zero, i.e., \(\tau=0\), then for that system:
1. \(\omega=0\)
2. \(\alpha=0\)
3. \(K.E=0\)
4. \(F=0\)
A steel wire of \(1~\mathrm{m}\) long and \(1~\mathrm{mm^2}\) cross-section area is hanged from a rigid end when the weight of \(1~\mathrm{kg}\) is hung from it, then the change in the length will be:
(Young’s coefficient for wire \(\mathrm{Y}=2 \times 10^{11} \mathrm{~N} / \mathrm{m}^2\))
1. \(
0.5 \mathrm{~mm}
\)
2. \(0.25 \mathrm{~mm}
\)
3. \(0.05 \mathrm{~mm}
\)
4. \(5 \mathrm{~mm}\)
When plate voltage in diode valve is increased from 100 V to 150 V. Then, the plate increases from 7.5 mA to 12 mA, then dynamic plate resistance will be:
1. \(10~\mathrm{k\Omega}\)
2. \(11~\mathrm{k\Omega}\)
3. \(15~\mathrm{k\Omega}\)
4. \(11.1~\mathrm{k\Omega}\)
If the sun rays are indenting at \(60^\circ\) angle and intensity is \(I.\) If the sun rays are made incident at \(30^\circ\) angle, then what will be the intensity?
1. \(\frac{I}{\sqrt3}\)
2. \(\sqrt3 I\)
3. \(3I\)
4. \(\frac{I}{3}\)
The reason for current flow in the p-n junction in forward bias is:
| 1. | drifting of charge carriers |
| 2. | drifting of minority charge carriers |
| 3. | diffusion of charge carriers |
| 4. | all of the above |
A charged particle is accelerated by a potential of 200 V. If its velocity is 8.4 × 108 m/s, then the value of e/m for that particle is:
1. 17.6 × 1016
2. 14.5 × 1012
3. 1.76 × 1015
4. 1.45 × 1015
When an open organ is dipped in water up to half of its height, then its frequency will become:
1. half
2. double
3. remain same
4. four times
A sound source producing waves of frequency 300 Hz and wavelength 1 m observer is stationary, while the source is going away with the velocity 30 m/s, then apparent frequency heard by the observer is:
1. 270 Hz
2. 273 Hz
3. 383 Hz
4. 300 Hz
A particle moves towards east for 2 s with velocity 15 m/s and move towards north for 8 s with velocity 5 m/s. Then, the average velocity of the particle is:
1. 2 m/s
2. 5 m/s
3. 7 m/s
4. 10 m/s
Relation between a wavelength of photon and electron of same energy is:
1. \( \lambda_{p h}>\lambda_e \)
2. \( \lambda_{p h}<\lambda_e \)
3. \( \lambda_{p h}=\lambda_e\)
4. \(\frac{\lambda_e}{\lambda_{p h}}=\text { constant }\)
Match the following.
| A. | Angular momentum | 1. | [M-1L2T-2] |
| B. | Torque | 2. | [M1T-2] |
| C. | Gravitational constant | 3. | [M1L2T-2] |
| D. | Tension | 4. | [M1L2T-1] |
1. C-2, D-1
2. A-4, B-3
3. A-3, C-2
4. B-2, A-1
If we increase the kinetic energy of a body by 300%, then percent increase in its momentum is:
1. 50%
2. 300%
3. 100%
4. 150%
Change in acceleration due to gravity is same at height h above the Earth surface and depth \(x ,\) then relation between \(x\) and \(h\) is: (\(h\) and \(x<<R_e\))
1. \(x=h\)
2. \(x=2h\)
3. \(x=\frac h2\)
4. \(x=h^2\)
A mass of \(1~\mathrm{kg}\) is suspended from a spring of force constant \(400\) N, executing SHM total energy of the body is \(2\) J, then the maximum acceleration of the spring will be:
1. \(
4 \mathrm{~m} / \mathrm{s}^2
\)
2. \( 40 \mathrm{~m} / \mathrm{s}^2
\)
3. \( 200 \mathrm{~m} / \mathrm{s}^2
\)
4. \( 400 \mathrm{~m} / \mathrm{s}^2\)
Two capacitors of capacities \(C_1\) and \(C_2\) are charged upto the potential \(V_1\) and \(V_2,\) then the condition for not flowing the charge between them when connected the capacitors, in parallel is:
1. \(C_1=C_2\)
2. \(C_1V_1=C_2V_2\)
3. \(V_1V_2\)
4. \(\frac{C_1}{V_1}=\frac{C_2}{V_2}\)
Find equivalent resistance between \(X\) and \(Y\):
1. \(R\)
2. \(R/L\)
3. \(2R\)
4. \(5R\)
Vibrations of rope tied by two rigid ends shown by equation \(y=cos2\pi t\sin2\pi x,\) then the minimum length of the rope will be:
1. \(1\) m
2. \(\frac12\) m
3. \(5\) m
4. \(2\pi\) m
If we change the value of \(R,\) then:
| 1. | voltage does not change on \(L\) |
| 2. | voltage does not change on \(LC\) combination |
| 3. | voltage does not change on \(C\) |
| 4. | voltage changes on \(LC\) combination |
If \(V=ar\) where \(a\) is a constant and \(r\) is the distance, then the electric field at a point will be proportional to:
1. \(r\)
2. \(r^{-1}\)
3. \(r^{-2}\)
4. \(r^{0}\)
Electric field at point 20 cm away from the centre of a dielectric sphere is 100 V/m, the radius of the sphere is 10 cm, then the value of the electric field at a distance 3 cm from the centre is:
1. 100 V/m
2. 125 V/m
3. 120 V/m
4. 0
50 g ice at 0°C in insulator vessel, 50 g water of 100 °C is mixed in it, and then final temperature of the mixture is: (neglect the heat loss)
1. 10°C
2. 0°C << Tm < 20°C
3. 20°C
4. above 20°C
Real power consumption in a circuit is least when it contains:
1. High \(R\), low \(L\)
2. High \(R\), high \(L\)
3. Low \(R\), high \(L\)
4. High \(R\), low \(C\)
The linear density of a string is \(1.3\times 10^{-4}~\mathrm{kg/m}\) and the wave equation is \(y=0.021\sin(x+30t)\).
What is the tension in the string, where \(x\) is in meters and \(t\) in seconds?
1. \(
0.12 \mathrm{~N}
\)
2. \( 0.21 \mathrm{~N}
\)
3. \(1.2 \mathrm{~N}
\)
4. \( 0.012 \mathrm{~N}\)
Magnetic field at point O will be: (assume straight wire segments are infinite)
1. \(\frac{\mu_{_0}l}{2R}\) interior
2. \(\frac{\mu_{_0}l}{2R}\) exterior
3. \(\frac{\mu_{_0}l}{2R}1-\frac{l}{\pi}\) interior
4. \(\frac{\mu_{_0}l}{2R}1-\frac{l}{\pi}\) exterior
In Young's double-slit experiment, the spacing between two slits is \(0.1\) mm. If the screen is kept at \(1.0\) m from the slits and the wavelength of light is \(5000\) Å, then the fringe width is:
1. \(5\) cm
2. \(0.5\) m
3. \(1\) cm
4. \(0.5\) cm
According to Bohr's model of a hydrogen atom, the relation between the principal quantum number \(n\) and the radius of the stable orbit is:
1. \(r\propto\frac1n\)
2. \(r\propto n\)
3. \(r\propto\frac{1}{n^2}\)
4. \(r\propto n^2\)
An observer is approaching with velocity \(v\) towards a light source. If the velocity of light is \(c,\) then the velocity of light with respect to the observer will be:
1. \(c-v\)
2. \(c\)
3. \(c+v\)
4. \(\sqrt{1-v^2/c^2}\)
Magnetic field of the earth is H = 0. 3 g. A magnet vibrates 5 oscillations per min. then the depreciation required in the magnetic field of the earth of increased time period up to 10 oscillations per minute is:
1. 2.25 g
2. 0.6 g
3. 0.9 g
4. 0.12 g
Work function of a metal is \(5.2 \times 10^{-18}~\mathrm{J} \) then its threshold wavelength will be:
1. \(736.7~\mathrm{\mathring A}\)
2. \(760.7~\mathrm{\mathring A}\)
3. \(301~\mathrm{\mathring A}\)
4. \(378.4~\mathring A\)
Remaining quantity (in %) of radioactive element after 5 half-lives is:
1. 4.125%
2. 3.125%
3. 31.1%
4. 42.125%
An engine pumps up 100 kg of water through a height of 10 m in 5 s. Given that, the efficiency of an engine is 60%. If g = 10 ms-2, the power of this engine is:
1. 3.3 kW
2. 0.33 kW
3. 0.033 kW
4. 33 kW
The angular amplitude of a simple pendulum is \(\theta^\circ.\) The maximum tension in its string will be:
1. \(mg(1-\theta_0)\)
2. \(mg(1+\theta_0)\)
3. \(mg(1-\theta_0^2)\)
4. \(mg(1+\theta_0^2)\)
If the electric flux entering and leaving an enclosed surface respectively are \(\phi_1\) and \(\phi_2,\) the electric charge inside the surface will be:
1. \(\frac{\phi_2-\phi_1}{\varepsilon_0}\)
2. \(\frac{\phi_2+\phi_1}{\varepsilon_0}\)
3. \(\phi_2-\phi_1~\varepsilon_0\)
4. \(\varepsilon_0\phi_1+\phi_2\)
During an adiabatic process, the pressure of a gas is found to be proportional to the cube of absolute temperature. The ratio \(\frac{C_P}{C_V}\) for the gas is:
1. \(\frac43\)
2. \(2\)
3. \(\frac53\)
4. \(\frac32\)
Three point charges +q, -2q and +q are placed at points (x=O, y= a, z =O), (x=O, y=O, z=O) and (x = a, y = 0, z = 0), respectively. The magnitude and direction of the electric dipole moment vector of this charging assembly are:
| 1. | \(\sqrt{2qa}\) Along+y children |
| 2. | \(\sqrt{2qa}\) Along the line joining points (x=0, y=0, z=0) and (x=a, y=a, z=0) |
| 3. | qa along the line joining points (x=0, y=0, z=0) and (x=a, y=a, z=0) |
| 4. | \(\sqrt{2qa}\) Along + x direction |
A block \(B\) is pushed momentarily along a horizontal surface with an initial velocity \(v.\) If \(\mu\) is the coefficient of sliding friction between \(B\) and the surface, block \(B\) will come to rest after a time.
1. \(\frac{v}{g\mu}\)
2. \(\frac{g\mu}{v}\)
3. \(\frac{g}{v}\)
4. \(\frac{v}{g}\)
To get three images of a single object, we should have two plane mirrors at an angle of:
1. \(60^\circ\)
2. \(90^\circ\)
3. \(120^\circ\)
4. \(30^\circ\)
A particle of mass \(M\) and charge \(Q\) moving with velocity \(v\) describes a circular path of radius \(R\) when subjected to a uniform transverse magnetic field of induction \(B.\) The work done by the field, when the particle completes one full circle, is:
1. \(\frac{Mv^2}{R}2\pi R\)
2. zero
3. \(BQ2^{\pi R}\)
4. \(BQv2^{\pi R}\)
A particle of mass 100 g is thrown vertically upward with a speed of 5 m/s. The work done by the force of gravity during the time the particle goes up is:
1. -0.5J
2. -1.25J
3. 1.25J
4. 0.5J
The relative reactivity’s of acyl compound towards nucleophilic substitution are in the order of:
1. Acyl chloride > acid anhydride > ester > amide
2. Ester > acyl chloride > amide > acid anhydride
3. Acid anhydride > amide > ester > acyl chloride
4. Acyl chloride > ester > acid anhydride > amide
Clemmensen reduction of a ketone is carried out in the presence of which of the following?
1. Zn-Hg with HCl
2. LiAlH4
3. H2 and pt as catalyst
4. Glycol with KOH
In Duma’s method of estimation of nitrogen, 0.35 g of an organic compound gave 55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be: (Aqueous tension at 300 K = 15 mm)
1. 16.45
2. 17.45
3. 14.45
4. 15.45
Which of the following is not correct?
| 1. | Ammonia is used as refrigerant |
| 2. | A mixture of CaC2 and N2 is known as nitrolim |
| 3. | A mixture of Ca(H2PO4)2 and CaSO4.2H2O is known as superphosphate of lime |
| 4. | Hydrolysis of NCl3 gives NH3 and HOCl |
Which one of the following is aromatic?
1. Cyclopentadienyl cation
2. Cyclooctatetraene
3. Cycloheptatriene
4. Cycloheptatrienylcation
The complexes [Co(NH3 )6 ] [Cr(CN)6] and [Cr(NH3 )6 ] [Co(CN)6 ] are the examples of which type of isomerism?
1. Ionization isomerism
2. Coordination isomerism
3. Geometrical isomerism
4. Linkage isomerism
A solution with negative deviation among the following is:
1. ethanol-acetone
2. chlorobenzene-bromobenzene
3. chloroform-acetone
4. benzene-toluene
Which of the following compounds is soluble in benzene but almost insoluble in water?
1.
2.
3.
4.
The correct order of magnitude of bond angles among the compounds CH4, NH3' and H2O is:
1.
2.
3.
4.
Which one of the following reactions does not form a gaseous product?
1.
2.
3.
4.
Observe the following reaction-
The rate of formation of C is 
1.
2.
3.
4.
Which one of the following 1s employed as antihistamine?
1. Diphenyl hydramine
2. Norethindrone
3. Omeprazole
4. Chloramphenicol
If x is the amount of adsorbate and m is the amount of adsorbent, which of the following relations is not related to the adsorption process?
1.
2.
3.
4.
Standard electrode potential of three metals X, Y and Z are -1.2 V, +0.5 V and -3.0 V respectively. The reducing power of these metals will be:
1. Y > X > Z
2. Z > X > Y
3. X > Y > Z
4. Y > Z > X
Which of the following compounds has the lowest melting point?
1.
2.
3.
4.
The dissociation equilibrium of a gas AB2 can be represented as-
The degree of dissociation is 'x' and is small compared to 1. The expression relating the degree of dissociation (x) with equilibrium constant KP and total pressure p is:
1.
2.
3.
4.
A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of NH4+ IS 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 ×10-5. What is the pH of this solution?
1. 9.43
2. 11.72
3. 8.73
4. 9.08
If a gas expands at a constant temperature, it indicates that:
1. kinetic energy of molecules decreases
2. pressure of the gas increases
3. Kinetic energy of molecules remains the same
4. number of the molecules of gas increase
If n = 6, the correct sequence for the filling of electrons will be:
1. ns → (n-1)d → (n-2)f → np
2. ns → (n-2)f → np → (n-1)d
3. ns → np → (n-1)d → (n-2)f
4. ns → (n-2)f → (n-1)d → np
Which of the following is least likely to behave as Lewis base?
1.
2.
3.
4.
In DNA, the complementary bases are:
1. Adenine and thymine; guanine and cytosine
2. Adenine and thymine; guanine and uracil
3. Adenine and guanine ; thymine and cytosine
4. Uracil and adenine, cytosine and guanine
Which one of the following does not undergo an iodoform reaction?
1. Secondary butyl alcohol
2. So-propyl alcohol
3. Diethyl ketone
4. Ethyl alcohol
Percentage of free space in a body centre cubic unit cell is:
1. 30%
2. 32%
3. 34%
4. 28%
For the reaction, N2 (g) +O2 (g) 
1.
2.
3.
4.
Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of:
1.
2.
3.
4.
Among the following the least thermally stable is:
1.
2.
3.
4.
Which one of the following is 'd' block element?
1. Gd
2. Hs
3. Es
4. Cs
The angular shape of ozone molecule (03) consists of:
1. 1 sigma and 2 pi bonds
2. 2 sigma and 2 pi bonds
3. 1 sigma and 1 pi bonds
4. 2 sigma and 1 pi bonds
If the E0cell for a given reaction has a negative value then which of the following gives the correct relationships for the values of 
1.
2.
3.
4.
Among the following the molecule possessing highest dipole moment is:
1.
2.
3.
4. Trans-2-butene
An electron is moving in Bohr's fourth orbit. Its de-Broglie wavelength is λ. What is the circumference of the fourth orbit?
1.
2.
3.
4.
The standard enthalpies of formation of A (NH3), B (CO2), C (HI) and D (SO2) are - 46.19, -393.4, +24.94 and -296.9 kJ mol-1 respectively. The increasing order of their stability is:
1. B < D < A <C
2. C < A < D <B
3. D < B < C <A
4. A < C < D <B
Green chemistry means such reactions which:
| 1. | Produce colour during reactions |
| 2. | Reduce the use and production of hazardous chemicals |
| 3. | Are related to the depletion of the ozone layer |
| 4. | Study the reactions in plants |
Which of the following compounds gives carbylamine test?
1. N-methyl-o-methyl aniline
2. N, N-diethyl aniline
3. 2 4-diethyl aniline
4. p-methyl-N-methyl benzylamine
Which of the following is an example for heterogeneous catalysis reaction?
| 1. | \(2SO_2(g) + O_2(g)\xrightarrow{\text{NO(g)}}{2SO_3g}\) |
| 2. | Hydrolysis of aqueous sucrose solution in the presence of an aqueous mineral acid |
| 3. | \(2H_2O_2(l)\xrightarrow{\text{Pt(s)}}{2H_2Ol~+~O_2g}\) |
| 4. | Hydrolysis in the presence of aqueous mineral acid |
Which of the following pair of metals is purified by van- Arkel method?
1. Zr and Ti
2. Ag and Au
3. Ni and Fe
4. Ga and In
Name the type of the structure of silicate in which one oxygen atom of [Si04]4- are shared?
1. Sheet silicate
2. Pyrosilicate
3. Three dimensional silicate
4. Linear chain silicate
In Fischer-Ringe’s method of separation of nobles gas mixture from the air, ........................... is used.
1. 90% CaC2+10%CaCl2
2. Coconut charcoal
3. Soda lime+potash solution
4. 90% CaCO3+10% urea
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?
1.
2.
3.
4.
The most recent and direct pre-historic ancestor is:
1. Cro-magnon
2. Neanderthal
3. Pre-neaderthal
4. None of these
Rh-factor can produce disease:
1. AIDS
2. Turner's syndrome
3. Erythroblastosis foetalis
4. Sickle cell anaemia
Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at:
1. Pons region in brain
2. Thalamus
3. Spinal cord
4. Right cerebral hemisphere
Which type of cells are absent in sponges?
1. Trophocytes
2. Myocytes
3. Archaeocytes
4. Cnidocytes
Zero growth means:
1. natality balance mortality
2. natality is more than mortality
3. natality is less than mortality
4. natality is zero
Which of the following hormone secretes a gastric secretion?
1. Entero gastrone
2. Gastrin
3. CCK-PZ
4. Villikinin
The protein a -1 antitrypsin is used to treat which of the following diseases?
1. Cancer
2. Rheumatoid arthritis
3. Emphysema
4. ADA deficiency disease in children
Darwin’s finches represent:
1. Morphological variations
2. Geographical isolations
3. Climate variations
4. Reproductive isolation
Food storage in Leucosolenia occur by:
1. ostia
2. osculum
3. thesocytes
4. spongocoel
Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and:
1. evolution
2. limiting factors
3. saltation
4. natural selection
Which one of the following in birds indicates their reptilian ancestry?
| 1. | Scales on their heart |
| 2. | Four-chambered heart |
| 3. | Two special chambers crop and grizzlies in their digestive tract |
| 4. | Egg with a calcareous shell |
Darwinism explains all the following except:
1. Within each species, there is variation
2. Organisms tend to produce more offspring than can survive
3. Offspring with better traits that overcome competition are best suited for the environment
4. Variations are inherited from parents to offspring through genes
Which of the following disorders is an outcome of irregularities in the metabolism of the nitrogenous waste?
1. Osteoporosis
2. Gouty arthritis
3. Osteoarthritis
4. Rheumatoid arthritis
Steroid hormones work as:
1. They enter into target cells and bind with specific receptors and activate specific genes to form protein
2. They bind to cell membrane
3. They catalyze the formation of cAMP
4. None of the above
Adrenaline and noradrenaline are hormones that act as:
1. Energy-producing agents
2. Food storage materials
3. Neurotransmitters
4. Energy-storing substances
If due to some injury the chordae tendineae of the tricuspid valve of the human heart is partially non-functional, what will be the immediate effect?
1. The flow of blood into the aorta will be slowed down
2. The 'pace maker' will stop working
3. The blood will tend to flow back into the left atrium
4. The flow of blood into the pulmonary artery will be reduced
The vector for T-DNA is:
1. Thermus aquaticus
2. Salmonella typhimurium
3. Agrobacterium tumefaciens
4. Escherichia coli
Match the enzyme in column I with its function in column II and choose the correct option.
1. A-2 B-1 C-4 D-3
2. A-3 B-2 C-1 D-4
3. A-3 B-4 C-1 D-2
4. A-1 B-2 C-4 D-3
In the central nervous system, myelinated fibres form the............., while the non-myelinated fibre cells form the.................... .
1. Grey matter, white matter
2. White matter, grey matter
3. Ependymal cells, neurosecretory cells
4. Neurosecretory cells, ependymal cells
Haemoglobin is:
1. An oxygen carrier in human blood
2. A protein used as a food supplement
3. An oxygen scavenger in root nodules
4. A plant protein with high lysine content
Which of the following tissue is vascular?
1. Cowpat bone
2. Skeletal muscle
3. Stratified squamous epithelium
4. Adipose tissue
Many elements are found in living organisms either free or in the form of compounds. Which one of the following is negligible in living organisms?
1. Silicon
2. Magnesium
3. Iron
4. Sodium
Which of the following represents uridylic acid?
1. Uracil + Ribose
2. Uridine + Phosphoric acid
3. Uracil + Phosphoric acid
4. Uridine + Ribose + Phosphoric acid
Consider the following statements with two blanks X and Y and select the option which correctly fills up these blanks.
In the center of the intervertebral disc, a soft area is present called ....X.... , which is supposed to be a remnant of ....Y........ .
1. X-Nucleus pulposus, Y-Nerve cord
2. X-Centrum, Y-Noto cord
3. X-Nucleus pulposus, Y-Noto cord
4. X- Centrum, Y-Nerve cord
Six highly chitinous plate-like teeth are found in ............... of cockroach.
1. Mandible
2. gizzard
3. Maxilla
4. rectum
The statement "All biological catalysts are proteins" is no longer valid after the discovery of:
1. ribonuclease
2. ribozyme
3. RNAs
4. DNAs
The structure present in all adult vertebrates is:
1. Notochord
2. Dorsal tubular nerve cord
3. Pharyngeal gill slits
4. All of the above
Which one of the following is not a vertebrate?
1. Sea cow
2. Sea lion
3. Sea horse
4. Sea hare
In human during fertilization a sperm firstly comes in contact with which layer of ovum?
1. zona pellucida
2. vitelline membrane
3. Jelly coat
4. zona radiate
Newly formed Biosphere Reserve of India (2013) is:
1. Pachmarhi
2. Himalaya
3. Cold desert
4. Panna
Which statement is correct for bacterial transduction?
1. Transfer of some genes from one bacteria to another bacteria through virus
2. Transfer of genes from one bacteria to other bacteria by conjugation
3. Bacteria obtain DNA directly
4. Bacteria obtain DNA from other external sources.
Theory of pangenesis was given by:
1. Darwin
2. Lamarck
3. Hugo de Vries
4. Oparin
Which part of the animal virus is not reproduced in multiple copies?
1. Capsid
2. Proteins
3. Envelops
4. Ribosome
Viroid’s have:
1. ssRNA not enclosed protein coat
2. ssDNA not enclosed by protein coat
3. dsDNA enclosed by protein coat
4. dsRNA enclosed by protein coat
Biotic potential or potential natality means:
1. Natural increase of population under ideal/optimum conditions
2. Potential of organisms in a biome
3. Number of organisms in a biome
4. Species of maximum number in a population
The world's highly prized wool-yielding 'Pashmina' breed is:
1. Sheep
2. Goat
3. Goat-sheep cross
4. Kashmiri sheep-Afghan sheep cross
Probes, used in DNA fingerprinting, are initially:
1. Single stranded RNA
2. Mini-satellite
3. 19 base long oligonucleotide
4. All of the above
Satellite DNA is a useful tool in:
1. Organ transplantation
2. Sex determination
3. Forensic science
4. Genetic engineering
Which of the following is a non-symbiotic nitrogen fixer organism?
1. VAM
2. Azotobacter
3. Anabaena
4. Rhizobium
Aleurone grains are rich in:
1. fat
2. protein
3. Carbohydrates
4. auxins
Match the following columns and choose the correct option.
1. A-5 B-4 C-1 D-2
2. A-5 B-4 C-1 D-3
3. A-4 B-2 C-3 D-1
4. A-1 B-2 C-4 D-5
The rupture and fractionation do not usually occur in water column in vessel/tracheid’s during the ascent of sap because of:
1. Lignified thick walls
2. Cohesion and adhesion
3. Weak gravitational pull
4. Transpiration pull
Stability of ecosystem depends upon:
1. Primary
2. Interchange between producers and consumers
3. Number of producers
4. Number of consumers
The material, which arrests cell division, is obtained from:
1. Crocus
2. Colchicum
3. Dalbergia
4. Chrysanthemum
Viscum album grown on trees. This is an example of:
1. Symbiosis
2. Parasitism
3. Commensalism
4. Predation
Which of the following is responsible for biological nitrogen fixation?
1. Nif gene
2. Nitrogenase
3. Both 1. and 2.
4. RNA synthetase
The respiratory quotient during cellular respiration would depend on the
1. Nature of enzymes involved
2. Nature of the substrate
3. Amount of carbon dioxide released
4. Amount of oxygen utilized
Which of the following supports a dense population of plankton and littoral vegetation?
1. Oligotrophic
2. Eutrophic
3. Lithotrophic
4. Agroecotrophic
Which of the following is not true for a species?
1. Members of a species interbreed
2. Variations occur among members of species
3. Each species is reproductively isolated from every other species
4. Gene flow does not occur between the populations of a species
Given below is the chemical formula of:
1. Palmitic acid
2. Glycerol
3. Galactose
4. Stearic acid
Choose the wrong pair.
1. Cenchrus-Savanna
2. Abies- Coniferous forest
3. Quercus- Broad leaf forest
4. Tectona- Temperate forest
Rarely among angiosperms, the pollen grains influenced the endosperm. This is called as:
1. Meta xenia
2. nemec phenomenon
3. Xenia
4. Mesogamy
Three floral diagrams are given here. Their respective families are assigned in the answer key. Find out the families to which these diagrams belong to:
1. A-Liliaceae, 8-Asteraceae, C-Solanaceae
1. A-Asteraceae, 8-Solanaceae, C-Brassiceae
3. A-Asteraceae, 8-Solanaceae, C-Asteraceae
4. A-Poaceae, 8-Solanaceae, C-Asteraceae
Tyloses an outgrowth from ray or axial parenchyma cell into the lumen of a vessel, which partially or completely blocks the cavity, are present in:
1. Periderm
2. Heartwood
3. Sapwood
4. Secondary cortex
Overlapping region between two ecosystems is called:
1. Biome
2. ecotone
3. Niche
4. Photic zone
Phage genome site on bacterial chromosome resulted in which structure?
1. Nucleic acid
2. heterocyst
3. Prophase
4. None of these
'Sun basket' is:
1. The device to utilize sun rays directly to meet the requirement of heat energy
2. The sufficient amount of sunlight stored in a cell
3. A device for taking sunbath
4. All of the above
The dominant epistasis ratio is:
1. 9:3:3:1
2. 12:3:1
3. 9:3:4
4. 9:6:1
Benthic organisms are found in:
1. Surface of marine water
2. Middle of water in sea
3. Bottom of sea
4. On-ground
Ethylene is related with:
1. Aerobic respiration
2. Climacteric phenomenon
3. Anaerobic respiration
4. Fermentation
Select the correct statement from the options given below with respect to the dihybrid cross.
1. Tightly linked genes on the same chromosome show higher recombination
2. Genes for apart on the same chromosomes show very few recombination
3. Genes that are loosely linked on the same chromosomes. Show similar recombination as lightly linked ones
4. Tightly linked genes on the same chromosomes show very few recombination
Maximum greenhouse gases are released by:
1. India
2. Britain
3. USA
4. France
In a coal-fired power plant, electrostatic precipitators are installed to control the emission of:
1.
2.
3. SPM
4. CO
Two genes R and y are located very close on the chromosome linkage map on maize plant. When RRYY and rryy genotypes are hybridized, then F2 segregation will show:
1. Higher number of the recombinant types
2. Segregation with expected 9:3:3:1 ratio
3. Segregation is 3:1 ratio
4. Higher number of parental types
A lake with an inflow of domestic s wage rich in organic waste may result in:
1. Drying of the lake very soon due to algal bloom
2. Increased production of fish due to lot of nutrients
3. Death of fish due to lack of oxygen
4. Increased population of aquatic food web organisms
Allelic sequence variation where more than one variant allele at a locus in. a human population with a frequency greater than 0.01 is referred to as:
1. DNA polymorphism
2. Multiple allelism
3. SNP
4. EST
Besides dung, the weed that can be used in biogas production is:
1. Hydrilla
2. Solanum nigrum
3. Eichhornia Crassipes
4. Parthenium hysterophorus
The following is the diagram of TS of Anther. Identify the parts labelled as A, B and C.
1. A-Epidermis, B-Endothecium, C-Spongenous
2. A-Endothecium, B-Connective, C-Pollengrain
3. A-Pollen grain, B-Connective, C- Endothecium
4. None of the above
Bacillus thuringiensis (Bt) strains have been used for designing novel:
1. Bio metallurgical technique
2. Bio mineralization processes
4. Bio insecticidal plants
4. Bio fertilizers
In the given diagram, parts labeled as A, B, C, D, E and F are respectively identified as:
1. synergids, polar nuclei, central cell, antipodals, filiform apparatus and egg
2. polar nuclei, egg, antipodals, central cell, filiform apparatus and synergids
3. egg, synergids, central cell, filiform apparatus, antipodals and polar nuclei
4. central cell, polar nuclei, filiform apparatus, antipodals, synergids and egg
In some organisms, karyokinesis is not followed by cytokinesis as a result of which, the multinucleate condition arises leading to the formation of the syncytium. The perfect example for this is:
1. Appearance of a furrow in cell membrane
2. Liquid endosperm in coconut
3. Sexual reproduction
4. Fertilization
Jacob and Monod named some enzymes as allosteric whose activity is regulated by:
1. End product
2. Substrate
3. By product
4. Coenzyme
The mobile genetic element is:
1. transposon
2. mutation
3. endonuclease
4. variation
In recombinant DNA technique, the term vector refers to:
1. Donor DNA, is identified and picked up through electrophoresis
2. Plasmid transfers DNA into living cell
3. Collection of the entire genome in the form of plasmid
4. Enzymes cut the DNA at specific sites
The net requirement of assimilatory power for the formation of 6 hexose molecules in maize plant is:
1. 72 ATP, 48 NADPH
2. 90 ATP, 60 NADPH
3. 108 ATP, 72 NADPH
4. 180 ATP, 72 NADPH
When two unrelated individuals or lines are crossed, the performance of F1 hybrid in often superior to both of its parents. This phenomenon is called:
1. Transformation
2. Heterosis
3. Splicing
4. Meta morphosis
Given below is a sample of a portion of the DNA strand given the base sequence on the opposite strand. What is so special show in it?
5'- GAATTC...3'
3'- CTTAAG ... 5'
1. Detection mutation
2. Start codon at 5' end
3. Palindromic sequence of base pairs
4. Replication completed
Rauwolfia serpentina is used in:
1. Curing high blood pressure
2. Kidney failure
3. Eye defect
4. Diabetes
1. Curing high blood pressure
2. Kidney failure
3. Eye defect
4. Diabetes
