question_answer4) The pressure exerted by an electromagnetic wave of intensity / \[(W/{{m}^{2}})\] on a non-reflecting surface is : [c is the velocity of light]
question_answer6) A block of mass 10 kg is moving in x-direction with a constant speed of 10 m/s. It is subjected to a retarding force F = - 0.1 x J/m during its travel from x = 20 m to x = 30 m. Its final kinetic energy will be:
question_answer8) The condition for a uniform spherical mass m of radius r to be a black hole is: [G = gravitational constant and g= acceleration due to gravity]
question_answer10) For a constant hydraulic stress on an object, the fractional change in the objects volume (\[{{K}_{f}}=500-25=475J\]) and its bulk modulus (B) are related as:
question_answer16) What should be the maximum acceptance angle at the air-core interface of an optical fibre if n1, and n2 are the refractive indices of the core and the cladding, respectively?
question_answer17) A conducting ring of radius 1 m is placed in an uniform magnetic field B of 0.01 T oscillating with frequency 100 Hz with its plane at right angle to B. What will be the induced electric Field?
question_answer18) Consider an n-p-n transistor amplifier in common-emitter configuration. The current gain of the transistor is 100. If the collector current changes by 1 mA, what will be the change in emitter current?
question_answer19) A telescope has an objective lens of focal length 200 cm and an eye piece with focal length 2 cm. If this telescope is used to see a 50 m tall building at a distance of 2 km, what is the height of the image of the building formed by the objective lens?
question_answer21) Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (\[=1.2\times {{10}^{12}}{{m}^{-3}}\]) of the characteristic X-rays emitted from different targets varies with atomic number Z as:
question_answer22) Two infinitely long parallel conducting plates having surface charge densities + \[\Delta \phi =2\times 0.01\times \pi \times {{(1)}^{2}}\times 200\times \cos {{0}^{o}}\]and -\[\therefore \] respectively, are separated by a small distance. The medium between the plates is vacuum. It\[e=\frac{-2\times 0.01\times \pi \times {{(1)}^{2}}\times 200}{100}\] is the dielectric permittivity of vacuum, then the electric field in the region between the plates is:
question_answer23) In a semiconducting material the mobilities of electrons and holes are \[Current\,gain=\frac{change\,in\,collector\,current}{change\,in\,base\,cirrent}\]and \[\beta =\frac{\Delta {{i}_{C}}}{\Delta {{i}_{B}}}\] respectively which of the following is true?
question_answer24) The magnetic moment \[\beta =100,\Delta {{i}_{C}}=1mA\]of a revolving electron around the nucleus varies with principal quantum number n as:
question_answer28) For ensuring dissipation of san-.J energy in all three resistors \[\frac{1}{{{v}_{0}}}=\frac{1}{{{f}_{0}}}+\frac{1}{{{u}_{0}}}\]connected as shown in figure, their values must be related as:
question_answer29) The apparent depth of water in cylindrical water tank of diameter 2R cm is reducing at the rate of x cm/ min when water is being drained out at a constant rate. The amount of water drained in cc per minute is: (\[{{n}_{1}}\] = refractive index of air, \[{{n}_{2}}=\] refractive index of water)
question_answer30) A candle of diameter d is floating on a liquid in a cylindrical container of diameter D (D > > d) as shown in figure. If it is burning at the rate of 2 cm/h then the top of the candle will:
question_answer31) A given shaped glass tube having uniform cross-section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity \[m=\left| \frac{{{v}_{o}}}{{{u}_{o}}} \right|=\frac{I}{O}\] then:
A)
water levels in both sections A and B go up
doneclear
B)
water level in section A goes up and that in B comes down
doneclear
C)
water level in section A comes down and that in B it goes up
question_answer32) When a ball is thrown up vertically with velocity \[\therefore \]. it reaches a maximum height of h. If one wishes to triple the maximum height then the ball should be thrown with velocity :
question_answer33) A solid sphere is rolling on a frictionless surface, shown in figure with a translational velocity v m/s. If it is to climb the inclined surface then v should be:
question_answer34) A horizontal platform is rotating with uniform angular velocity around the vertical axis passing through its centre. At some instant of time a viscous fluid of mass m is dropped at the centre and is allowed 10 spread out and finally fall. The angular velocity during this period :
question_answer35) A ladder is leaned against a smooth wall and it is allowed to slip on a frictionless floor. Which figure represents the track of its centre of mass?
question_answer37) A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure. The time variation of the magnitude of emf generated across the coil during one cycle is:
question_answer38) Two concentric conducting thin spherical shells A and B having radii \[\therefore \] and \[=\text{ }potential\text{ }\times \text{ }charge\]\[=\frac{KZe}{r}(-e)=-\frac{KZ{{e}^{2}}}{r}\] are charged to \[E=KE+PE\], and -\[=\frac{1}{2}\frac{KZ{{e}^{2}}}{r}-\frac{KZ{{e}^{2}}}{r}\] \[=\frac{KZ{{e}^{2}}}{2r}\]. The electrical field along a line. (passing through the centre) is:
question_answer40) A particle having charge q and mass m is projected with velocity \[=-27.2eV\]in uniform electric field \[f=(2.48\times {{10}^{15}}){{(Z-1)}^{2}}Hz\]. Change in momentum \[\Rightarrow \] during any time interval t is given by:
question_answer41) Assertion: Specific gravity of a fluid is a dimensionless quantity. Reason: It is the ratio of density of fluid to the density of water.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer43) Assertion: By roughening the surface of a glass sheet its transparency can be reduced. Reason: Glass sheet with rough surface absorbs more light.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer47) Assertion: The clouds in sky generally appear to be whitish. Reason: Diffraction due to clouds is efficient in equal measure at all wavelengths.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer48) Assertion: Television signals are received through sky-wave propagation. Reason: The ionosphere reflects electro- magnetic waves of frequencies greater than a certain critical frequency.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer49) Assertion: The logic gate NOT can be built using diode. Reason: The output voltage and the input voltage of the diode have 180° phase difference.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer50) Assertion: The resolving power of a telescope is more if the diameter of the objective lens is more. Reason: Objective lens of large diameter collects more light.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer52) Assertion: For system of particles under central force field, the total angular momentum is conserved. Reason: The torque acting on such a system is zero.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer54) Assertion: It is not possible to use \[E=E+E=2E\]as the fuel for fusion energy. Reason: The binding energy of \[\sigma \] is too small.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer55) Assertion: The number of electrons in a p-type silicon semiconductor is less than the number of electrons in a pure silicon semiconductor at room temperature.
A)
Reason: It is due to law of mass action. If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer56) Assertion: In a common-emitter transistor amplifier the input current is much less than the output current. Reason: The common-emitter transistor amplifier has very high input impedance.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer57) Assertion: A body that is a good radiator is also a good absorber of radiation at a given wavelength. Reason: According to Kirchhoffs law the absorptivity of a body is equal to its emissivity at a given wavelength.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer58) Assertion: In pressure-temperature (P-T) phase diagram of water, the slope of the melting curve is found to be negative. Reason: Ice contracts on melting to water.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer59) Assertion: For higher temperatures the peak emission wavelength of a black body shifts to lower wavelengths. Reason: Peak emission wavelengths of a black body is proportional to the fourth-power of temperature.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer60) Assertion: For Reynolds number \[E\frac{\sigma }{2{{\varepsilon }_{0}}}\] the flow of fluid is turbulent. Reason: Inertial forces are dominant compared to the viscous forces at such high Reynolds numbers.
A)
If both assertion and reason are true and reason is the correct explanation of assertion.
doneclear
B)
If both assertion and reason are true but reason is not the correct explanation of assertion.
question_answer61) Among the following molecules (i) \[\overset{\centerdot \centerdot }{\mathop{X}}\,e{{O}_{3}}\] (ii) \[\overset{\centerdot \centerdot }{\mathop{X}}\,eO{{F}_{4}}\] (iii) \[\overset{\centerdot \centerdot }{\mathop{X}}\,e{{F}_{6}}\] Those having same number of lone pairs on \[Xe\] are:
question_answer65) In the balanced chemical reaction, \[IO_{3}^{-}+a{{I}^{-}}+b{{H}^{+}}\xrightarrow{{}}c{{H}_{2}}O+d{{I}_{2}}\] a, b, c and d respectively corresponds to:
question_answer76) Which of the following chemicals are used to manufacture methyl isocyanate that caused Bhopal Tragedy? (i) Methylamine (ii) Phosgene (iii) Phosphine (iv) Dimethylamine
question_answer80) If z is the number of atoms in the unit cell that represents the closest packing sequence... .A B C ABC..... the number of tetrahedral voids in the unit cell is equal to:
question_answer83) When \[10\text{ }mL\] of \[0.1\text{ }M\] acetic acid \[(p{{K}_{a}}=5.0)\] is titrated against \[10\text{ }mL\] of \[0.1\text{ }M\] ammonia solution \[(p{{K}_{a}}=5.0)\], the equivalence point occurs at pH:
question_answer86) For reaction \[aA\to xP,\], when \[\text{ }\!\![\!\!\text{ A }\!\!]\!\!\text{ }=2.2\text{ }mM\], the rate was found to be \[2.4\text{ }mM\text{ }{{s}^{-1}}\]. On reducing concentration of A to half, the rate changes to \[0.6\text{ }mM\text{ }{{s}^{-1}}\]. The order of reaction with respect to A is:
question_answer87) For reaction, \[2NOCl(g)\rightleftharpoons 2NO(g)+C{{l}_{2}}(g);{{K}_{c}}\] at \[{{427}^{o}}C\] is \[3\times {{10}^{-6}}L\,mo{{l}^{-1}}.\] The value of \[{{K}_{p}}\] is nearly:
question_answer90) The major product formed in the following reaction is: \[C{{H}_{3}}-\underset{H}{\mathop{\underset{|}{\mathop{\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{2}}Br\xrightarrow[C{{H}_{3}}OH]{C{{H}_{3}}{{O}^{-}}}\]
question_answer94) \[C{{H}_{3}}C{{O}_{2}}{{C}_{2}}{{H}_{5}}\] on reaction with sodium ethoxide in ethanol gives A, which on heating in the presence of acid gives B. Compound B is:
question_answer101) Assertion: Reaction of \[S{{O}_{2}}\] and \[{{H}_{2}}S\] in the presence of \[F{{e}_{2}}{{O}_{3}}\] catalyst gives elemental sulphur. Reason: \[S{{O}_{2}}\] is a reducing agent.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer102) Assertion: \[SiF_{6}^{2-}\] is known but \[SiCl_{6}^{2-}\] is not. Reason: Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of Si strongly.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer104) Assertion: Ozone is powerful oxidising agent in comparison to \[{{O}_{2}}\]. Reason: Ozone is diamagnetic but \[{{O}_{2}}\], is paramagnetic.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer105) Assertion: Potassium ferrocyanide is diamagnetic, whereas potassium ferricyanide is paramagnetic. Reason: Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer106) Assertion: Addition of \[N{{H}_{4}}OH\] to an aqueous solution of \[BaC{{l}_{2}}\] in the presence of \[N{{H}_{4}}Cl\] (excess) precipitates \[Ba{{(OH)}_{2}}\] Reason: \[Ba{{(OH)}_{2}}\] is insoluble in water.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer108) Assertion: The molecular weight of acetic acid determined by depression in freezing point method in benzene and water was found to be different. Reason: Water is polar and benzene is non-polar,
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer109) Assertion: Compressibility factor for hydrogen varies with pressure with positive slope at all pressures. Reason: Even at low pressure, repulsive forces dominate hydrogen gas.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer112) Assertion: Rate of hydrolysis of methyl chloride to methanol is higher in DMF than in water. Reason: Hydrolysis of methyl chloride follows second order kinetics.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer114) Assertion: Extraction of iron metal from iron oxide ore is carried out by heating with coke. Reason: The reaction, \[F{{e}_{2}}{{O}_{3}}(s)\xrightarrow{{}}Fe(s)+\frac{3}{2}{{O}_{2}}(g)\] is a spontaneous process.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer116) Assertion: t-butyl methyl ether is not prepared by the reaction of f-butyl bromide with sodium meth oxide. Reason: Sodium meth oxide is a strong nucleophile.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer117) Assertion: Maltose is a reducing sugar which gives two moles of D-glucose on hydrolysis. Reason: Maltose has a 1, 4-\[\beta \]-glycosidic linkage.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer119) Assertion: Alkyl isocyanides in acidified water give alkyl form amides. Reason: In isocyanides, carbon first acts as a nucleophile and then as an electrophile.
A)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
doneclear
B)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
question_answer121) Based on cellular mechanisms there are two major types of regeneration found in the animals. Which one of the following is the correct example of the type mentioned?
A)
Morphollaxis - Regeneration of two transversely cut equal pieces of a Hydra into two small Hydra
doneclear
B)
Epimorphosis ? Replacement of old and dead erythrocytes by the new ones
doneclear
C)
Morphollaxis ? Healing up of a wound in the skin
doneclear
D)
Epimorphosis ? Regeneration of crushed and filtered out pieces of a Planaria into as many new Planarian
question_answer124) Given below is a pedigree chart showing the inheritance of a certain sex-linked trait humans. The trait traced in the above pedigree chart is
question_answer133) A young drug addict used to show symptoms of depressed brain activity, feeling of calmness, relaxation and drowsiness. Possibly he was taking:
question_answer141) Grain colour in wheat is determined by three pairs of polygene. Following the cross AABBCC (dark colour) x aabbcc (light colour), in F2 generation what proportion of the progeny is likely to resemble either parent?
question_answer150) The given graph shows the effect of substrate concentration on the rate of reaction of the eyzyme green gram-phosphatase. What does the graph indicate?
A)
The rate of enzyme reaction is directly proportional to the substrate concentration
doneclear
B)
Presence of an enzyme inhibitor in the reaction mixture
doneclear
C)
Formation of an enzyme-substrate complex
doneclear
D)
At higher substrate concentration the pH increases
question_answer152) Autopolyploids (numeric or quantitative polyploids or intra specific polyploids) like ferns, garden plants, gram, maize, rice, banana, grapes, apple etc., show:
question_answer155) In an experiment freshly hatched larvae of an insect (khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amounts of cholesterol. Results obtained are shown in the graph given in the table: The graph indicates:
A)
cholesterol is an essential dietary requirement of khapra beetle
doneclear
B)
Growth of khapra beetle is directly proportional to cholesterol concentration
doneclear
C)
cholesterol concentration of \[2\,\mu /g\] diet is the optimum level
doneclear
D)
growth of khapra beetle in inhibited when cholesterol concentration exceeds \[5\,\mu /g\] diet
question_answer161) Assertion: Senescence is the time when age associated defects are manifested. Reason: Certain genes may be undergoing sequential switching on and off during ones life.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer162) Assertion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryotes). Reason: Both bacteria and yeast multiply very fast to form huge population which express the desired gene.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer163) Assertion: Methane component of greenhouse gases contributing to global warming is about 20 per cent. Reason: Introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer164) Assertion: A suspended particulate matter (SPM) is an important pollutant released by diesel vehicles. Reason: Catalytic converters greatly reduce pollution caused by automobiles.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer165) Assertion: Interferons are a type of antibodies produced by body cells infected by bacteria. Reason: Interferons stimulate inflammation at the site of injury.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer166) Assertion: Organ transplantation patients are given immunosuppressive drugs. Reason: Transplanted tissue has antigens which stimulate the specific immune response u; the recipient.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer167) Assertion: Persons suffering from haemophilia fail to produce blood clotting factor VIII. Reason: Prothrombin producing platelets in such persons are found in very low concentration.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer168) Assertion: In humans, the gamete contrtibuted by the male determines whether the child produced will be male or female. Reason: Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on X-chromosome and some on Y-chromosome.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer169) Assertion: Mitochondria and chloroplasts are semiautonomous organelles. Reason: They are formed by division of pre-existing organelles as well as contain DNA but lack protein synthesizing machinery.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer170) Assertion: Replication and transcription occur in the nucleus but translation occurs in the cytoplasms. Reason: m-RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer171) Assertion: The fungi are widespread in distribution and they even live on or inside other plants and animals. Reason: Fungi are able to grow anywhere on land, water or on other organisms because they have a variety of pigments, including chlorophyll, carotenoids fucoxanthin and phycoerythrin.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer172) Assertion: \[{{C}_{4}}\] photosynthetic pathway is more efficient than the \[{{C}_{3}}\] pathway. Reason: Photorespiration is suppressed in \[{{C}_{4}}\] plants.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer173) Assertion: Presently, the global atmosphere is warming up. Reason: The depletion of stratospheric ozone layer has resulted in increase in ultraviolet radiations reaching the earth.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer174) Assertion: Human ancestors never used their tails and so the tail expressing gene has disappeared in them. Reason: Lamarcks theory of evolution is popularly called theory of continuity of germ plasm.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer175) Assertion: Comparative biochemistry provides a strong evidence in favor of common ancestry of living beings. Reason: Genetic code is universal.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer176) Assertion: Darwins finches show a variety of beaks suited for eating large seeds, flying insects and cactus seeds. Reason: Ancestral seed-eating stock of Darwins finches radiated out from South American mainland to different geographical areas of the Galapagos Islands, where they found competitor-free new habitates.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer177) Assertion: The atmospheric concentration of \[C{{O}_{2}}\] at which photosynthesis just compensates for respiration is referred to as \[C{{O}_{2}}\] compensation point. Reason: The \[C{{O}_{2}}\] compensation point is reached when the amount of \[C{{O}_{2}}\] uptake is less than that generated through respiration because the level of \[C{{O}_{2}}\] in the atmosphere is more than that required for achieving \[C{{O}_{2}}\] compensation point.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer178) Assertion: The sex ratio of Kerala is highest in India. Reason: In countries like India the population is increasing at a rapid rate.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer179) Assertion: The duck-billed platypus and the spiny ant-eater, both are egg-laying animals yet they are grouped under mammals. Reason: Both the them have seven cervical vertebrae and 12 pairs of cranial nerves.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.
question_answer180) Assertion: Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops. Reason: A gene incorporated in the bacterial chromosomal genome-gets automatically transferred to the crop with which the bacterium is associated.
A)
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
doneclear
B)
If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
doneclear
C)
If Assertion is true statement but Reason is false.
doneclear
D)
If both Assertion and Reason are false statements.