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1.
A closely wound solenoid of 2000 turns and area of cross-section 1.5 × 10–4 m2 carries a current of 2.0 A. It is suspended through its centre and perpendicular to its length, allowing it to turn in a horizontal plane in a uniform magnetic field 1.5 × 10–2 T , making an angle of 30° with the axis of the solenoid. The torque on the solenoid will be? 1. 3 × 10–3 N-m 2. 4.5 × 10–3 N-m 3. 1.5 × 10–2 N-m 4. 3 × 10–2 N-m
2.
A freshly prepared radioactive source of half-life 2 h emits radiation of intensity which is 64 times the permissible safe level. Calculate, the minimum time after which it would be possible to work safely with this source.
1. 12 h 2. 24 h 3. 6 h 4. 130 h
3.
A ball is dropped from a high rise platform t = 0 starting from rest. After 6 s another ball is thrown downwards from the same platform with a speed v . The two balls meet at t = 18 s. What is the value of v?
1. 74 m/s 2. 64 m/s 3. 84 m/s 4. 94 m/s
4.
The thermo emf E (in volts) of a certain thermocouple is found to vary with Q (in C) according to equation where Q is temperature of the hot function being kept at 0 °C. Then, the neutral temperature of the thermocouple is
1. 300 ° C 2. 400 ° C 3. 100 ° C 4. 200 ° C
5.
The maximum vertical distance through which is fully dressed astronaut can jump on the earth is 0.5 m. Estimate the maximum vertical distance through which he can jump on the moon, which has a mean density 2/3 rd that of the earth and radius one quarter that of the earth.
1. 1.5 m 2. 3 m 3. 6 m 4. 7.5 m
6.
As shown in figure a simple harmonic motion oscillator having identical four springs has time period
If there were a reduction in gravitational effect, which of the following forces do you think would change in some respect?
1. Magnetic force 2. Electrostatic force 3. Viscous force 4. Archimedes's uplift
8.
Two batteries of emf 4 v and 8 V with internal resistance 1Ω and 2Ω respectively are connected to an external resistance R = 9Ω as shown in figure. The current in circuit and the potential difference between P and Q respectively will be 1. 2. 3. 4.
9.
The correct graph respectively the relation between energy (E) of photoelectrons and frequency v of incident light is 1. 2. 3. 4.
10.
A body at a temperature of 728 ° C and has surface area 5 cm2, radiates 300 J of energy each minute. The emissivity is (given Boltzmann constant )
1. e = 0.18 2. e = 0.02 3. e = 0.2 4. e = 0.15
11.
Considering normal incidence of ray, the equivalent refractive index of combination of two slabs shown in figure is
1. 1.8 2. 1.43 3. 2 4. None of the above
12.
Three particles having charges in the ratio of 2 : 3 : 5 produce the same point on the photographic film in Thomson experiment. Their masses are in the ratio of
A black body emits heat at the rate of 20 W. When its temperature is 727 ° C. Another black body emits heat at the rate of 15W, when its temperature is 227 º C. Compare the area of the surface of the two bodies, if the surrounding is at NTP.
1. 16 : 1 2. 1 : 4 3. 12 : 1 4. 1 : 12
15.
The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate by using the formula . If the maximum errors in the measurement of force and length are 4% and 2% respectively, then the maximum error in the measurement of pressure is
1. 1%
2. 2%
3. 8%
4. 10%
16.
The transfer ratio β of a transistor is 50. The input resistance of the transistor, when used in the common emitter mode is 1kΩ. The peak value of the collector alternating current for an input peak voltage of 0.01 V is
Four resistance are connected so that they form the side of a rectangle AB, BC, CD and DA respectively. Another resistance of is connected across the diagonal AC. The equivalent resistance between A and B is
1. 2Ω 2. 5Ω 3. 7Ω 4. 10Ω
18.
The velocity of a particle moving in the x – y plane is given by and Where, t = 0, x = 8 and y = 0, the path of the particle is
1. A straight line 2. an ellipse 3. a circle 4. a parabola
19.
A rod of length L is hinged from one end. It is brought to a horizontal position and released. The angular velocity of the rod, when it is in vertical position is
A weight w is suspended from the midpoint of a rope, whose ends are at the same level. In other to make the rope perfectly horizontal, the force applied to each of its ends must be
1. less than w 2. equal to w 3. equal to 2 w 4. infinitely large
21.
A particle moves along a curve of unknown shape but magnitude of force F is constant and always acts along tangent to the curve. Then,
1. F may be conservative 2. F must be conservative 3. F may be non-conservative 4. F must be non-conservative
22.
A block has been placed on an inclined plane with the slope angle θ, block slide down the plane at constant speed. The coefficient of kinetic friction is equal to
1. sin θ 2. cos θ 3. g 4. tan θ
23.
A charge q is located at the centre of a cube. The electric flux through any face is
During SHM, a particle has displacement x from mean position. If acceleration. Kinetic energy and excess potential energy are represented by a K and U respectively, then choose the appropriate graph 1. 2. 3. 4.
25.
The root mean square velocity of hydrogen molecule at 27 ° C is and that of oxygen at 402 ° C is , then
A charged spherical conductor of radius a and charge q, is surrounded by another charged concentric sphere of radius b (b > a) . The potential difference between conductors is V. When, the spherical conductor of radius b is discharged completely, then the potential difference between conductor will be
The current-voltage graph for a device is shown in figure. The resistance is negative in region.
1. AB 2. BC 3. ABC 4. None of these
28.
Silver and copper voltmeters are connected in parallel with a battery of emf 12 V. In 30 min 1 g of silver and 1.8 g of copper are liberated. The energy supplied by the battery is
1. 720 J 2. 2.41 J 3. 24.12 J 4. 4.34 × 104 J
29.
At a specific instant emission of radioactive compound is deflected in a magnetic field. The compound can emit
1. Aelectron 2. protons 3. H2+ 4. neutrons
30.
A magnet is cut in three equal parts by cutting it perpendicular to its length. The time period of original magnet is T0 in a uniform magnetic field B. Then, the time period of each part in the same magnetic field is
A 50 Hz AC current of crest value 1 A flows through the primary of a transformer. If the mutual inductance between the primary and secondary be 0.5 H, the crest voltage induced in the secondary is
1. 75 V 2. 150 V 3. 100 V 4. None of these
32.
If the length and area of cross-section of a conductor are doubled, then its resistance will be
1. unchanged 2. halved 3. doubled 4. quadrupled
33.
A source of light lies on the angle bisector of two plane mirrors inclined at angle θ. The values of θ, so that the light reflected from one mirror does not reach the other mirror will be
A ruby laser produces radiations of wavelengths, 662.6 nm in pulse whose duration are 10–9 s. If the laser produces 0.39 J of energy per pulse, how many photons are produced in each pulse?
Balmer gives an equation for wavelength of visible radiation of H– spectrum as \(\lambda=\frac{k n^{2}}{n^{2}-4}\). The value of k in terms of Rydberg’s constant R is 1. R
2. 4R
3. \(R \over 4\)
4. \(4 \over R\)
36.
In and are electron and hole mobility, E be the applied electric field, the current density for intrinsic semiconductor is equal to
Three charged particles are collinear and are in equilibrium, then
1. All the charged particles have the same polarity 2. The equilibrium is unstable 3. All the charged particles cannot have the same polarity 4. Both (b) and (c) are correct
39.
The capacitive time constant of the RC circuit shown in the figure is
Assertion Mass of moving photon varies inversely as the wavelength. Reason Energy of the particle = Mass × (speed of light)2.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
41.
Assertion A hollow metallic closed container maintained at a uniform temperature can act as a source of a black body radiation. Reason All metals act as a black body.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
42.
Assertion The ratio of inertial mass gravitational mass is equal to one. Reason The inertial mass and gravitational mass of a body are equivalent.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
43.
Assertion In a stationary wave, there is no transfer of energy. Reason There is no outward motion of the disturbance from one particle to adjoining particle in a stationary wave.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
44.
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
Assertion (A):
In photoelectron emission the velocity of electron ejected from near the surface is larger than that coming from interior of metal.
Reason (R):
The velocity of ejected electron will be zero.
In the light of the above statements choose the correct answer from the options given below:
1.
Both (A) and (R) are true and (R) is the correct explanation of (A).
2.
Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.
(A) is true but (R) is false.
4.
(A) is false but (R) is true.
45.
Assertion If the ice on the polar caps of the earth melts, the length of day will increase. Reason Moment of inertia of the earth increases, as ice on polar caps melts.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
46.
Assertion Dielectric polarization means formation of positive and negative charges inside the dielectric. Reason Free electron are formed in this process.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
47.
Assertion Static crashes are equal on radio when lightning flash occurs in the sky. Reason Electromagnetic waves having frequency of radio wave range, interfere with radio waves.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
48.
Assertion The satellites equipped with electronic devices are called active satellites. Reason Passive satellite works as active satellite
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
49.
Assertion In He-Ne laser, population inversion takes place between energy levels of neon atoms. Reason Helium atoms have a metastable energy level.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
50.
Assertion A transistor amplifier in common emitter configuration has a low input impedance. Reason The base to emitter region is forward biased. 1. If both assertion and reason are true and reason explain the assertion.
2. If both the assertion and reason are true but reason does not explain the assertion.
3. If assertion is true but reason is false.
4. If assertion is false but reason is true.
51.
Assertion Thermodynamic process in nature are irreversible. Reason Dissipative effects cannot be eliminated.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
52.
Assertion Crystalline solids can cause X-rays to diffract. Reason Interatomic distance in crystalline solids is of the order of 0.1 nm.
1. If both assertion and reason are true and reason explain the assertion. 2. If both the assertion and reason are true but reason does not explain the assertion. 3. If assertion is true but reason is false. 4. If assertion is false but reason is true.
53.
Assertion For higher temperature, the peak emission wavelength of a black body shifts to lower wavelength. Reason Peak emission wavelength of a blackbody is proportional to the fourth power of temperature.
54.
Assertion Displacement of a body may be zero, when distance travelled by it is not zero. Reason The displacement is the longer distance between initial and final position.
1. Photochemical smog causes irritation in eyes 2. London smog is a mixture of smoke and fog 3. Photochemical smog results in the formation of PAN 4. London smog is oxidizing in nature
63.
Which of the following aqueous solutions has the highest boiling point?
An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to
1. increase in number of ions 2. increase in ionic mobility of ions 3. increase in both, i.e., number of ions and ions mobility of ions 4. at normal dilution 100% ionization of electrolyte
65.
The rate constant for a first order reaction becomes six times when the temperature is raised from 350 K to 400 K. Calculate the activation energy for the reaction.
In Williamson’s synthesis, ethoxy ethane is prepared by:
1. Heating sodium ethoxide with ethyl bromide.
2. Passing ethanol over heated alumina.
3. Treating ethyl alcohol with an excess of conc. H2SO4 at 430-440 K.
4. Heating ethanol with dry \(Ag_2O\)
79.
Which among the following compounds will give a secondary alcohol on reacting with Grignard reagent followed by acid hydrolysis? I. HCHO II. C2H5CHO III. CH3COCH3 IV. RCOOC2H5 Select the correct answer using the codes given below.
\( \psi ^{2} \ = \ 0 \) represents: 1. a node
2. an orbital
3. angular wave function
4. wave function
84.
If the de-Broglie wavelength of a particle of mass m is 100 times its velocity then the wavelength value in terms of its mass (m) and Planck’s constant (h) is: 1. \(\frac{1}{10}\sqrt{\frac{m}{h}}\)
An LPG cylinder, containing 15 kg butane at 27 ºC and 10 atm pressure, is leaking. After one day, its pressure decreased to 8 atm. The quantity of gas leaked is
1. 1 kg 2. 2 kg 3. 3 kg 4. 4 kg
88.
Assume each reaction is carried out in a open container. For which reaction ?
For the gas phase reaction, Carried out in a vessel, the equilibrium concentration of C2H4 can be increased by
1. decreasing the pressure 2. increasing the temperature 3. removing some C2H6 4. adding some H2
92.
Which one of the following is a conjugated protein?
1. Phoshoprotein 2. Glycoprotein 3. Chromoprotein 4. All of these
93.
A solution containing 0.319 g of CrCl3.6H2O was passed through a cation exchange resin and acid coming out of the cation exchange resin required 28.5 mL of 0.125 M NaOH. Determine correct formula of the complex [mol. Wt. of the complex = 266.5]
1. Curium (Z = 96) 2. Californium (Z = 98) 3. Uranium (Z = 92) 4. Terbium (Z = 65)
95.
The period number in the long form of the periodic table is equal to
1. Magnetic quantum number of any element of the period 2. Atomic number of any element of the period 3. Maximum principal quantum number of any element of the period 4. Maximum azimuthal quantum number of any element of the period
96.
If the IP of Na is 5.48 eV, the ionisation potential of K will be
The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm3 at 27 ° C is to a volume of 100 dm3
Assertion p-toluidine is a stronger base than m-toluene. Reason Methyl group from m-position exerts smaller electron donating inductive (+I) effect than from p-position.
101.
Assertion 2-butyne on controlled hydrogenation with Pd/CaCo3 in presence of PbO gives cis-2-butene. Reason Hydrogenation occur at the surfaces of metal containing adsorbed hydrogen.
102.
103.
Assertion Reaction of alcohols with SOCL2 is catalysed by the presence of a tertiary amine (R3N). Reason Tertiary amine promote the reaction by reacting with the by-product HCl.
104.
Assertion Aldol condensation is usually carried out in dilute solution of a strong base. Reason Concentrated solution of strong base involves cannizzaro reaction
105.
Assertion Malonic acid (HOOC – CH2 – COOH) does not form cyclic anhydride on heating. Reason It is like β-keto acid, on heating it prefer to decarboxylate.
106.
Assertion Both 106 g of sodium carbonate and 12 g of graphite have same number of carbon atoms. Reason Both 106 g sodium carbonate and 12 g of graphite contain 1 g-atom of carbon atoms.
107.
Assertion Energy of electron is largely determined by its principal quantum number. Reason Principal quantum number is a measure of the most possible distance of finding the electron around the nucleus.
108.
Assertion When 1.0 mol of NaCl is doped with 10-3 mol SrCl2, the number of cationic sites remaining vacant is 10-3. Reason Each SrCl2 unit produces two cationic vacancy.
109.
Assertion A process for which as well as , passes from non-spontaneous to spontaneous state as temperature is increased. Reason At higher temperature, exceeds .
110.
Assertion A catalyst does not influence the value of equilibrium constant. Reason Catalyst influence the rate of both forward and backward reactions equally.
111.
Assertion Addition of a nonvolatile solute to a volatile solvent increases the boiling point. Reason Addition of non-volatile solute results in lowering of vapour pressure.
112.
Assertion Electrolysis of molten CaH2 produces hydrogen gas at anode. Reason In CaH2 , hydrogen is present in the form of hydride H–.
113.
Assertion NaOH cannot be stored in a vessel made of aluminium or zinc. Reason A protective layer of oxide is formed on the surface of the metal.
114.
Assertion Boron always forms covalent bond Reason The small size of B3+ favours formation of covalent bond.
115.
Assertion CaF2 has been given the name fluorspar. Reason Solid CaF2 emits light when heated.
116.
Assertion The purple colour of KMnO4 is due to the charge transfer transition. Reason The intense colour in most of the transition metal complexes is due to d-d transition.
117.
Assertion Al2O3is converted to aluminium by reduction with carbon. Reason Carbon (graphite) has greater affinity for oxygen than Al.
118.
Assertion [Ni(CO)4]is a diamagnetic complex. Reason All the electrons in the complex are paired.
Aerobic respiration produces more unsable chemical energy than fermentation, because fermentation involves
1. formation of lactic acid 2. complete oxidation of food 3. partial oxidation of food 4. evolution of CO2 and alcohol
127.
Which one of the following correctly describes the location of some body parts in the earthworm (Pheretima)?
1. Four pairs of spermathecae in 4-7 segments 2. One pair of ovaries attached at intersegmental septum of 14th and 15th segments 3. Two pairs of testes in 10th and 11th segments 4. Two pairs of accessory glands in 16-18th segments
128.
Hypothetical plant hormones are
1. florigen 2. vernalin 3. florigen and venalin 4. auxin
129.
Which one of the following shows heterothallism?
1. Rhizopus 2. Bacterium 3. Cycas 4. Ricinus
130.
A drug addict showed symptoms such as increased appetite, chest pain, redness of eyes, increased urination. He was possibly taking
In an area, a population with large size individuals having long lifespan, more parental care and slow development was resent. The type of population growth curve will be
1. S-shaped 2. J-shaped 3. Z-shaped 4. All of these
145.
A gland called ‘Clock of ageing’ that gradually reduces and degenerates in ageing is
1. thyroid 2. thymus 3. parathyroid 4. pituitary
146.
Which of the following statement is correct?
1. DPD = OP – WP 2. DPD = OP + WP 3. DPD = WP – OP 4. DPD = TP + OP
At a particular locus, frequency of ‘A’ allele is 0.6 and that of ‘a’ is 0.4. What would be the frequency of heterozygotes in randomly mating population of equilibrium?
1. 0.16 2. 0.36 3. 0.48 4. 0.24
149.
The C4 plants differ for C3 plants with reference to the
1. substrate that accepts CO2 in carbon assimilation 2. type of end product 3. type of pigment involved in photosynthesis 4. number of ATP that are consumed in preparing sugar.
150.
The colour in the brown fat is due is
1. its larger capacity for generating heat 2. large number of mitochondria present 3. a high concentration of iron containing cytochrome pigments 4. presence of chromatophores
151.
Which of the following is common among mammals?
1. They do not moult 2. They have seven cervical vertebrae 3. They are carnivores 4. They have ventral nerve cord
152.
Elater mechanism for seed dispersal is exhibited by
1. Riccia 2. Marchantia 3. Dryopteris 4. Funaria
153.
In which one of the following pairs, the two items mean the same thing?
Saheli, is an oral contraceptive pill that has very high contraceptive value with little side effects. It is because
1. it is taken once in a weak 2. it contains synthetic progesterone 3. it contains centchroman 4. it decreases risk of cancer
159.
Assertion Rigor mortis is the state of body suffering prior to death. Reason It is due to relaxation of action and myosin filaments.
160.
Assertion Seeds fails to germinate at very low and high temperature. Reason Seeds sown deep into the soil fail to germinate.
161.
Assertion Lysosomes are organelle in eukaryotic cells that contains digestive enzymes to digest macromolecules. Reason Lysosomes are also called phagolysosomes or hetero phagosomes or digestive vacuoles.
162.
Assertion Reproductive isolation brings about sympatric speciation. Reason It is the primary mode of speciation, e.g., Darwin’s finches.
163.
Assertion Presence of photorespiration is considered as a wasteful and energy consuming process in crop plants, ultimately leads to reduction in yield. Reason During synthesis up 50% CO2 fixed may have to pass through the photorespiratory process to form carbohydrate such as sucrose.
164.
Assertion Enzymes becomes inactive below minimum temperature. Reason The inactivity of the enzymes is due to denaturation.
165.
Assertion Fine structure of the objects can be observed by Transmission Electron Microscope (TEM). Reason Study of living cells can not be done through TEM, because of high voltage, which is required to operate it, kills the cells.
166.
Assertion The total content of iron in an adult body is 3.5 gram. The iron deficiency lead to anemia. Reason Iron (Fe2+) combines with the pigment porphyrin to form heme.
167.
Assertion Mammals have developed a complex respiratory system. Reason Mammalian skin is impermeable to gases.
168.
Assertion Removal of keystone species cause serious disruption in the functioning of the community. Reason Keystone species are low in abundance (or biomass) than the dominant species.
169.
Assertion In bacteria the chromosome is irregularly folded into a compact mass, the nucleoid or genophore of definite form. Reason In bacteria there is no organized nucleus.
170.
Assertion DNA is more stable while RNA is more reactive. Reason DNA was first discovered by Watson and Crick (1953).
171.
Assertion Second infection of the same pathogen is quickly eliminated. Reason Preformed memory B and T-cells elicit a quick and vigorous attack on pathogens.
172.
Assertion Eukaryotic cells have more DNA than prokaryotic cells. Reason Eukaryotes are more complex than prokaryotes genetically
173.
Assertion In open water zone upto the depth to which light can penetrate, called photic zone. Reason The photic zone is categorized into euphotic and is photic zone.
174.
Assertion Zoospores in Chlamydomonas are frequently formed in the night during favourable conditions. Reason Zoospore swims for a certain time and then grows into a new plant.
175.
Assertion After hearing a sound, nerve impulse passes from neurons to the brain. Reason The neurons which passes nerve impulse from body organ to brain is called afferent neuron.
176.
Assertion Placenta in addition to connection with mother and foetus to ductless gland. Reason It releases human gonadotropins.
177.
Assertion A woman is capable of suing a man of refusing to own a child, who has a blood group O. The man has blood group B and woman has A. Reason She is right as genetically, he can be the father of the child.
178.
Assertion The thallus of Riccia is internally differentiated into an upper photosynthetic region and lower storage region. Reason The lower storage region is formed from parenchymatous cells.
AIIMS 2014Contact Number: 9667591930 / 8527521718
where Q is temperature of the hot function being kept at 0 °C. Then, the neutral temperature of the thermocouple is
)
are connected so that they form the side of a rectangle AB, BC, CD and DA respectively. Another resistance of 
is connected across the diagonal AC. The equivalent resistance between A and B is
and 
and that of oxygen at 402 ° C is 
, then
and 
are electron and hole mobility, E be the applied electric field, the current density 
for intrinsic semiconductor is equal to
?
as well as 
, passes from non-spontaneous to spontaneous state as temperature is increased. 
exceeds 
.
synthesis up 50% CO2 fixed may have to pass through the photorespiratory process to form carbohydrate such as sucrose.
?
