1. Two vectors F1 and F2 are inclined at an angle θ, have resultant F1, which is right angle to the force F1. Find θ.
(d ) When the resultant is perpendicular to F1, the angle θ must be 120°. 2. If the range of a projectile thrown at an angle 15° is 50 m, find the range when it is thrown with same speed at an angle of 45°.
(b ) Range is maximum at 45° and is double that of 15° (R ∝ sin(2θ)). 3. If a projectile has range 24 m and height 8m then, find the velocity with which it was thrown
(a ) Using R = (u²sin2θ)/g and H = (u²sin²θ)/2g, solving gives u = 5√g. 4. C.M (centre of mass)
May lie inside the body May lie outside the body May lie on the surface of body May lie inside, outside or on surface of the body (d ) Centre of mass can lie inside, outside, or on the surface depending on the object's shape. 5. What happens if torch light is used in the interference?
Interference does not occur Few coloured fringes will appear with central fringe white It occurs with high triangle width It occurs with distinct color of triangle (a ) Torch light is incoherent, so interference does not occur. 6. In damping, which of the following remains constant.
Initial phase Angular frequency Time period Amplitude (a ) Initial phase remains constant in damped oscillations. 7. If the combined power of the convex and concave lens is 4D and the power of the convex lens is 5D. Find the focal length of the concave lens.
(a ) P_combined = P1 + P2 ⇒ 4 = 5 + P2 ⇒ P2 = -1D. Focal length (f) = 1/P = -100 cm. 8. The conduction in the semi-conductor due to breaking of the covalent bond occurs in
Intrinsic conductor Extrinsic conductor Acceptor Donor (a ) Intrinsic conduction occurs due to breaking of covalent bonds. 9. If the work function of the metal is 3.6×10⁻¹⁹ J, then maximum wavelength emitted by it is.
5748 nm 574.5 nm 2.745 nm 5.745 nm (b ) λ_max = hc/ϕ ≈ 574.5 nm. 10. An electron enters a magnetic field (B) with (u) at right angle, then it traces a path of radius (r). If flux density is halved and velocity doubled, then it will trace a path of radius:
(c ) r = mv/qB ⇒ New radius = (2m)(2v)/(q(B/2)) = 4r. 11. The efficiency of the Carnot's engine between steam point and freezing point of ice is
(a ) η = 1 - T2/T1 = 1 - 273/373 ≈ 26.8%. 12. If the KE of the body decreases by 19%, then the momentum of the body decreases by
(a ) KE ∝ p² ⇒ If KE decreases by 19%, p decreases by 10%. 13. According to Bohr's model, which of the following quantity gets quantized i.e. have discrete value?
Angular momentum Linear momentum Planck's constant Electron (a ) Bohr's model quantizes angular momentum (L = nħ). 14. When the dip circle is perpendicular to the magnetic meridian, then apparent angle of dip is
(d ) Apparent dip is 90° when the dip circle is perpendicular to the magnetic meridian. 15. A moving coil galvanometer can be converted to ammeter by
By connecting small resistance in parallel By connecting high resistance in parallel By connecting small resistance in series By connecting high resistance series (a ) Ammeters require a shunt (small parallel resistance) to measure current. 16. When 100 gm of the water at 80°C is poured into the calorimeter made of aluminium weighing 300 gm (having sp-gr.0.22) containing 10 gm of water at 20° C then, find the resulting temperature of the mixture.
(b ) Heat lost = Heat gained ⇒ 100(80-T) = 300(0.22)(T-20) + 10(T-20) ⇒ T ≈ 48°C. 17. For a perfect gas, at constant pressure, volume of gas is doubled then final temperature will be (initial temperature given 27°C).
(a ) V ∝ T ⇒ If V doubles, T doubles (27°C = 300K → 600K = 327°C). 18. X-ray in the room cause which type of following illumination.
(a ) X-rays are invisible to the human eye. 19. In an adiabatic process, work done on the system is 90J. What is the change in internal energy?
(a ) ΔU = W (adiabatic) ⇒ ΔU = +90 J. 20. A coil of wire of radius r has 600 turns and self inductance of 108 mH. The self inductance of a similar coil of 500 turns will be.
(a ) L ∝ N² ⇒ L2 = (500/600)² × 108 ≈ 75 mH. 21. Which of the following is called 'Vegetable chameleon'?
Anthocyanin Chlorophyll Cytochrome Pyrenoid (a ) Anthocyanin changes color with pH, earning the name. 22. Synapsid occurs in
pachytene zygotene leptotene diakinesis (b ) Synapsis (pairing of homologous chromosomes) occurs in zygotene. 23. Circular DNA is found in
Nucleus and cytoplasm Nucleus and Mitochondria Mitochondria and Chloroplast Chloroplast and nucleus (c ) Mitochondria and chloroplast have circular DNA. 24. In which of the following stele, pith is found?
Protostele Dictyostele Merestele Siphonostele (d ) Siphonostele has a central pith. 25. Versatile stamens are found in
Fabaceae Poaceae Malvaceae Compositae (b ) Poaceae (grasses) have versatile stamens. 26. Which of the following is xerophytic succulent?
(c ) Agave stores water in its leaves (succulent). 27. Munch mass flow is associated with
Transpiration Translation Transcription Translocation (d ) Munch hypothesis explains phloem translocation. 28. Which of the following plant possess hardest wood?
Shorea robusta Dalbergia sissoo Tectona grandis Cedrus deodara (b ) Dalbergia sissoo (Sheesham) has very hard wood. 29. Jute Fibre is obtained from
Secondary xylem Secondary phloem Primary xylem Primary Phloem (b ) Jute fibers are extracted from secondary phloem. 30. Sprouting of potato during storage is due to
Auxin Gibberellin Cytokinin ABA (b ) Gibberellins promote sprouting in potatoes. 31. Biofertilizer is
Crotolaria juncia Sesbania sculenta Anabaena azollae Vigna sinesis (c ) Anabaena azollae fixes nitrogen (biofertilizer). 32. Commercially cork is obtained from
(a ) Cork comes from the bark of oak (Quercus suber). 33. Passive absorption occurs mainly due to
Humidity Temperature light Metabolic inhibitor (a ) Passive absorption is driven by humidity (transpiration pull). 34. Apomixis involves
Fusion of gamete Steam cutting Without fusion of gametes Normal type of reproduction (c ) Apomixis is asexual reproduction without gamete fusion. 35. Micropyle, funicle and chalaza lie in a straight line, the type of ovule is called
Atropous Anatropous Amphitropous Hemitropous (a ) Atropous (orthotropous) ovule has a straight alignment. 36. Anthers are fused but filaments are free condition is found in
Compositae Malvaceae Lilacea Poaceae (a ) Compositae (Asteraceae) have syngenesious anthers. 37. Peristome is found in
Marchantia Funaria Cycas Fern (b ) Funaria (a moss) has a peristome for spore dispersal. 38. Fungi that require two hosts for completion of their life cycle is
Aplanatic Diplontic Autoecious Heterocoeious (d ) Heteroecious fungi need two hosts. 39. Pigment system is mainly for:
flowering hydrolysis of water guttation respiration (b ) Pigment systems (PS I & PS II) split water in photosynthesis. 40. Alternative or contrasting form of gene is
Homozygous Allele Heterozygous Hemizygous (b ) Alleles are variant forms of a gene. 41. Sound box of bird is called
Lyrinx Thyroid Adams apple Syrinx (d ) Birds produce sound using the syrinx. 42. Which of the following is not found in frog?
Thyroid Arytenoid Cricoid Corniculate (d ) Frogs lack corniculate cartilages (present in mammals). 43. During conjugation in paramecium, which of the following is not degenerated?
Macronucleus Micronucleus cytopyge oral groove (b ) Micronucleus remains intact for genetic exchange. 44. Gristle cartilage is found in
Hyaline cartilage Fibro cartilage Areolar tissue Adipose tissue (a ) Gristle cartilage refers to hyaline cartilage. 45. Nephridiopores is found in
septal nephridia pharyngeal nephridia integumentary nephridia None of the above (c ) Integumentary nephridia release waste via nephridiopores. 46. Type of Nephridia not found in earthworm is
Macronephridia Septal nephridia Integumentary nephridia Pharyngeal nephridia (a ) Earthworms lack macronephridia. 47. In tadpole,
3 pair of external gills present 1 pairs of internal gills present 3 pairs of internal gills 1 pair of external gills present (a ) Tadpoles initially have 3 pairs of external gills. 48. In rabbit, eye movement is controlled by
Corpora quadrigemina Cerebrum Crura cerebri Thalamus (a ) Corpora quadrigemina (midbrain) controls eye movements. 49. Passive flight is observed in
Exocoetus Columba Parrot Oryctolagus (a ) Exocoetus (flying fish) glides passively. 50. Blind spot contains
Only rods Only cones Either rods or cones neither rods nor cones (d ) Blind spot (optic disc) lacks photoreceptors. 51. Organ of corti is present in
Tympanum Scala vestibuli Scala media Scala tympani (c ) Organ of Corti is in the cochlear duct (scala media). 52. Unusual character of ascidian as Chordata is
Net like nervous system Their blood travels in both directions Anus empties into the incurrent siphon A pair of siphon is present (a ) Ascidians have a decentralized nervous system. 53. Which one of the following phylum is acoelomate?
Platyhelminthes Cestoda Nematoda Annelida (a ) Platyhelminthes are acoelomate flatworms. 54. Earthworm has
single eyes a pair of eyes no eyes two pair of eyes (c ) Earthworms lack eyes but have light-sensitive cells. 55. Earthworm hides in burrow
to get moisture to get food to escape from prey to copulate (a ) Burrows help earthworms retain moisture. 56. Study of animal behavior
Ethology Ethnology Etiology Euthenics (a ) Ethology is the study of animal behavior. 57. The typical vertebrae of frog is
Procoelous Acoelous Amphicoelous Amphicoelous (a ) Frog vertebrae are procoelous (concave anteriorly). 58. Gemmule are formed by acquiring
Archaeocytes Thesocytes Tropocytes Metazoes (a ) Gemmules contain archaeocytes for regeneration. 59. Darwin proposed which one of the following process for transmission of character
Inheritance of acquired character Use and disuse of organ Pangenesis Mutation (c ) Darwin's pangenesis theory involved 'gemmules'. 60. Poisons claws of the Chilopoda are
modification of Maxilla Mandibles Maxillepede (d ) Chilopoda (centipedes) have poison claws (modified maxillipeds). 61. Carbonic anhydrase is found in
(a ) Carbonic anhydrase is abundant in red blood cells. 62. Liver cells are phagocytized by the Kupffer cells to produce a pigment called
bilirubin Fibrin Sterobilin Urochrome (a ) Kupffer cells break down hemoglobin into bilirubin. 63. Sea-anemone and hermit crab exhibits which type of association
Commensalism Symbiosis Mutualism Parasitism (b ) This is a mutualistic symbiosis (both benefit). 64. Animal which eat their own faces are
Coprohagus Cropuscular Crepuscular Gregarius (a ) Coprophagous animals eat feces (e.g., rabbits). 65. ICSH is secreted by
Pituitary Testes Ovary Thymus (a ) ICSH (Interstitial Cell-Stimulating Hormone) is from the pituitary. 66. Archenteron is found in which of the following stage?
Gastrula Bastrula Coeloblastula Morula (a ) Archenteron forms during gastrulation. 67. Skull of rabbit is
Monocondylic Dicondylic Tetracondylic Acondylic (b ) Rabbit skull is dicondylic (two occipital condyles). 68. Secondary spermatocytes or spermatids an formed from
Primary spermatocyte Primary oocyte Spermatogonia Oogonia (a ) Primary spermatocytes undergo meiosis II to form spermatids. 69. Mongolism or down syndrome is due to
Monosomy Trisomy Nullisomy Tetrasomy (b ) Down syndrome is trisomy 21. 70. Closed vascular system is found in
Pheretima Cockroach Taenia solium Star fish (a ) Earthworm (Pheretima) has a closed circulatory system. 71. One mole of Sn²⁺ reduces .. moles of K₂Cr₂O₇
(a ) 3Sn²⁺ + Cr₂O₇²⁻ → 3Sn⁴⁺ + 2Cr³⁺ ⇒ 1 mole Sn²⁺ reduces 1/3 mole K₂Cr₂O₇. 72. Which of the following has maximum magnetic moment?
(a ) Fe³⁺ (5 unpaired electrons) has the highest magnetic moment. 73. Phenol acts as o & p directing group due to
Mesomeric effect Electromeric effect Inductive effect Resonance effect (a ) Phenol's -OH donates electrons via mesomeric (resonance) effect. 74. Which of the following react with excess of HBr to give 2, 2 -dibromopropane?
CH₃ - C ≡ CHBr CH₃- C ≡ CH CH₃ -C≡ C-CH₃ H₂C = CH₂ (b ) Propyne (CH₃-C≡CH) adds 2HBr to form 2,2-dibromopropane. 75. A compound 'X' reacts with C₂H₅MgI to form a compound 'Y' which on hydrolysis yields 2-methyl pentan -3-ol. Identify 'X'.
2-Methyl propanal Butanol Butanone Propanone (c ) Butanone reacts with C₂H₅MgI to form 2-methyl-3-pentanol after hydrolysis. 76. Sucrose undergoes hydrolysis. It is
hydration Inversion Hydrolysis saponification (b ) Sucrose hydrolysis is called 'inversion' (forms glucose + fructose). 77. Nomenclature of following compound is C₂H₅-NH-CHO
N-ethyl methanamide N-formyl ethanamine N-Hydro ethane N-Ethanamide (b ) C₂H₅-NH-CHO is N-formyl ethanamine. 78. Acetic acid having molarity 2.05M and specific gravity 1.78 g/cc has molality.
1.44 mol kg⁻¹ 2.40 mol kg⁻¹ 3.24 mol kg⁻¹ 1 mol kg⁻¹ (a ) Molality = (Molarity × 1000) / (1000 × density - Molarity × Molar mass) ≈ 1.44 m. 79. Neutralization reaction of HCl and NaOH gives -57.34 kJmol⁻¹ heat, then heat of ionization of water is
-57 kJ mol⁻¹ +57.34 kJ mol⁻¹ -114.68 kJ mol⁻¹ +114.68 kJ mol⁻¹ (b ) Heat of ionization of water = -ΔH_neutralization = +57.34 kJ/mol. 80. Hess law is associated with
change of heat of reaction equilibrium of reaction order of reaction stability of reaction (a ) Hess's Law states that ΔH is path-independent. 81. When ice is changed into water at 273K, which is correct
G_ice = G_water = 0 G_ice = G_water ≠ 0 G_ice < G_water G_ice > G_water (b ) At equilibrium (melting point), G_ice = G_water ≠ 0. 82. A catalyst changes
Activation energy of reaction Thermal energy of reaction Temperature coefficient of reaction Kinetic energy of the reactant (a ) Catalysts lower activation energy. 83. Half life of 1st order reaction is
directly proportional to initial concentration of the reactant independent of the initial concentration of reactant Directly proportional to the square of concentration of the reactant Inversely proportional to concentration of the reactant (b ) t½ = ln(2)/k for 1st order reactions (independent of [A₀]). 84. During contact process of manufacturing of H₂SO₄, arsenic impurity is removed by
(a ) Fe₂O₃ removes arsenic as ferric arsenate. 85. In contact process, scattering phenomenon occurs in testing box identifies suspended impurity using
Tyndall effect Electrophoresis Dialysis Dispersion (a ) Tyndall effect detects colloidal impurities. 86. During Solvay process, brine solution is saturated with ammonia to get
(a ) NH₃ + CO₂ + NaCl → NaHCO₃ + NH₄Cl. 87. Activation energy is
Energy difference between reactants and products Energy difference between reactants and activated complex Heat of reaction between None of the above (b ) Activation energy is the barrier between reactants and transition state. 88. Hypo is used in photography due to its
Complexing property Picture printing Oxidizing property Reducing property (a ) Hypo (Na₂S₂O₃) dissolves unexposed AgBr via complexation. 89. In dry cell, depolarizer is
(b ) MnO₂ acts as a depolarizer by oxidizing H₂ gas. 90. Auto reduction method is used to extract
Cu and Hg Cu and Ag Cu and Au Hg and Ag (a ) Auto-reduction works for Cu₂S → Cu and HgS → Hg. 91. When methyl iodide is reacted with sodium ethoxide
Methoxy ethane Ethoxyethane Ethoxy-methane Butanol (c ) CH₃I + C₂H₅ONa → C₂H₅OCH₃ (ethoxy-methane). 92. Which of the following reaction is combustion reaction?
CH₄ (g) + 2O₂ (g) → CO₂ (g) + 2H₂O (l) H₂SO₄ + NaOH → Na₂SO₄ + 2H₂O 2H₂ + O₂ → 2H₂O 2Cu + O₂ → 2CuO (a ) Combustion involves fuel (CH₄) + O₂ → CO₂ + H₂O. 93. Flavoring agent used in Jam industry
Carboxylic acid Ester Aldehyde Alcohol (b ) Esters provide fruity flavors in jams. 94. Which of the following electronic configuration has highest 1st IE?
1s² 2s² 2p¹ 1s² 2s² 2p² 1s² 2s² 2p³ 1s² 2s² 2p⁴ (c ) Half-filled p-subshell (2p³) has high stability and IE. 95. Chloroform on reaction with aniline and KOH gives
Phenyl isocyanide Phenyl cyanide Phenol Benzene (a ) C₆H₅NH₂ + CHCl₃ + KOH → C₆H₅NC (isocyanide). 96. Cu reacts with which of the following to give blue colouration?
NaNO₃ Mg(NO₃) Zn(NO₃)₂ AgNO₃ (d ) Cu + AgNO₃ → Cu(NO₃)₂ (blue solution). 97. Unit of specific conductivity is
ohm cm ohm⁻¹ Ohm⁻¹ cm⁻¹ Seimen cm (c ) Specific conductivity = κ (unit: Ω⁻¹ cm⁻¹). 98. Formic acid is formed by
Glycerol and (COOH)₂ is heated (CH₃COO)₂Ca is heated CH₃COOH + CH₃CH₂COOK CH₃MgBr + CH₃CHO (a ) Glycerol + oxalic acid → formic acid on heating. 99. Ionic moment is more in which type of solution
Low value of dielectric in solution High value of dielectric in solution independence of dielectric strength None of the above (b ) High dielectric solvents stabilize ions (higher ionic moment). 100. Characteristic reaction of carbonyl group is
Electrophilic addition Electrophilic substitution Nucleophilic addition Nucleophilic substitution (c ) Carbonyls (C=O) undergo nucleophilic addition. 