1. An Aeroplane moving with 300 Km/hr in circular path then what is change in velocity in half revolution
Zero 300√2 300 km/hr 600 km/hr (d ) Change in velocity = vfinal - vinitial = 300 - (-300) = 600 km/hr (direction reverses). 2. A body cover 1/3rd distance with v1 velocity next and distance with v2 velocity then average velocity
(2v1 v2 )/(v1 +v2 ) (v1 +v2 )/2 (1v1 v2 )/(2v1 +3v2 ) (3v1 v2 )/(v2 +2v1 ) (d ) vavg = Total distance/Total time = D/[(D/3)/v1 + (2D/3)/v2 ] = 3v1 v2 /(2v1 + v2 ) 3. Heater is 1000 W then energy consumed in 2hrs is
(c ) Energy = Power × Time = 1000W × 2h = 2 kWh. 4. 25 W - 220 V and 100 W - 220 V is joined in series with 220 V mains then power will be
4 W and 16 W 32 W and 16 W 8 W and 32 W 16 W and 64 W (d ) P = V²/R → R1 = 1936Ω, R2 = 484Ω. Series current I = 220/(1936+484) = 0.09A. P1 = I²R1 ≈ 16W, P2 ≈ 64W. 5. A cylinder has mass 'M' a length "l" and Radius 'R' then M.I. about own axis is
MR2 (MR2 )/2 (MR2 )/4 M(R2 /4+l2 /12) (b ) Moment of inertia of solid cylinder about its axis = ½MR². 6. The escape velocity from earth surface is 11 Km/sec then what is escape velocity from another plant of double radius having mean density same
5.5 km/sec 11 mk/sec 22 km/sec 15.5 km/sec (c ) vesc ∝ R√ρ → If R doubles and ρ same, vesc doubles (22 km/s). 7. The thermometer reads 1° ice is melt and in boiling water 99° then what is temperature when it reads 25°C.
24.4°C 25.34°C 26.3°C 22.3°C (a ) Actual temp = (Reading - Lower fixed point)/(Upper - Lower) × 100 = (25-1)/(99-1) × 100 ≈ 24.4°C. 8. The time period of simple pendulum when
Length is increases by 2 times Mass is increases by 2 times Length is increases by 4 times Length is reduced to half (c ) T = 2π√(L/g) → T ∝ √L → If L increases 4×, T doubles. 9. The pressure and volume are changing but temperature is constant in the process
Adiabatic Isothermal Isobaric Isochoric (b ) Isothermal process: PV = constant (Boyle's law) at fixed T. 10. Heat is flowing through two cylinder of same material. The diameter for rods are in the ratio and their length in 2:1. If the temperature deference between their end are same then ratio of amount of heat inducted though them per unit time will be
(a ) Q/t = kAΔT/L → Q ∝ D²/L → Ratio = (1/2)² / (2/1) = 1:8. 11. The heat energy produced by radiation is proportional to
Square of temperature in K Square root of temperature in K 4th power of temperature in K Thrice power of temperature in K (c ) Stefan-Boltzmann law: P ∝ T⁴. 12. Which of the following is vector
Electric potential Electric flux Charge density Electric field intensity (d ) Electric field intensity (E = F/q) is a vector quantity. 13. When the Battery of voltage 'E' of internal resistance 'r' is connected in a circuit of resistance 'R' then 'i' current flows which is correct for voltage in circuit is
(b ) Terminal voltage V = E - ir (voltage drop across internal resistance). 14. The sound travels with speed 300 ms-1 in string. Then find the distance between two successive nodes. If frequency is 1000 Hz
(c ) λ = v/f = 300/1000 = 0.3 m. Distance between nodes = λ/2 = 15 cm. 15. For production of beats the radio should tune with
Same frequency, difference phase Difference frequency, same phase Difference frequency constant phase Same amplitude, and same frequency (b ) Beats require two waves with slightly different frequencies (Δf) and same phase. 16. When ice cube is placed in table then it's melts which is correct
The K.E. of gas molecules decreases The P.E. of gas molecules decreases The P.E. of gas molecules increases The energy of gas molecules does not change (c ) Melting increases intermolecular distance → Potential energy increases. 17. The reciprocal of wavelength is called
Velocity Wave frequency Amplitude Wave number (d ) Wave number (k) = 1/λ (units: m-1 ). 18. For floating body to be stable
Metacenter should lies above the C.G Metacenter should lies below the C.G. Metacenter coincide with C.G. Center of buoyancy above C.G (a ) Stability requires metacenter (M) to be above center of gravity (G). 19. A moving charge experience forces if
All charge particle deflect in magnetic field All charge particle do not deflect Charge particle move along magnetic field Charge particle move inclined to magnetic field (d ) F = qvBsinθ → Force exists when θ ≠ 0° or 180°. 20. The convex lens has focal length 20 cm the power is
-5.0 D +0.05 D +5.0 D -0.05 D (c ) Power (P) = 1/f (in meters) = 1/0.2 = +5 D (convex lens). 21. The V.D. of X is 4 times of Y. If molecular wt. of X is M then that of Y is
(d ) V.D. ∝ M.W. → If V.D.X = 4×V.D.Y → M.W.Y = M/4. 22. Fractional atomic wt of an element is because
Of existence of allotropic form Eq. wt are not whole no. Of existence of isotopes Valency of element have fractional value (c ) Fractional atomic weights arise from isotopic abundance averages. 23. The radioactive substance after 90 days reduces to 12.5% then find the decay constant of substance
0.3845/day 0.0234/day 0.467/day 0.0467/day (b ) 12.5% = (½)3 → 3 half-lives in 90 days → t½ = 30 days. λ = 0.693/t½ ≈ 0.0231/day. 24. The compound [Fe(CN)6 ]4- has hybridization
(c ) Fe2+ in [Fe(CN)6 ]4- undergoes sp3 d2 hybridization (octahedral). 25. When SO2 is passed through potassium iodate then the O.N. of iodine change from
+5 to 0 +7 to -1 -5 to 0 +7 to 0 (a ) 2IO3 - + 5SO2 + 4H2 O → I2 + 5SO4 2- + 8H+ (I changes from +5 to 0). 26. When 100 cc of 1M H2 SO4 is mixed with 20 cc of 5 M NaOH the resulting solution is
Acidic Slightly basic Strongly basic Neutral (a ) Moles H+ = 100×1×2 = 200 meq; Moles OH- = 20×5 = 100 meq → Excess H+ → Acidic. 27. The wt of CuSO4 .5H2 O required to neutralize 500cc of 0.5M solution?
31.18 gm 61.36 gm 63.28 gm 128.12 gm (a ) Moles of CuSO4 needed = 0.5×0.5 = 0.25. M.W. of CuSO4 .5H2 O = 249.7 → Mass = 0.25×249.7 ≈ 62.4g (Note: Options may need revision). 28. Milk is colloidal solution of
Water disperse in fat Fat disperse in water Fat disperse in lactic acid Lactic acid disperse in fat (b ) Milk is an oil-in-water (O/W) emulsion with fat globules dispersed in aqueous phase. 29. The conc. of cane sugar (C6 H12 O11 ) which is isotonic to 6 gm of urea in 1 litre
34.2 g/lit 68.4 g/l 102.6 g/l 342 g/l (a ) Isotonic solutions have same molarity. M.W. urea=60 → 6g/L=0.1M. M.W. sucrose=342 → 0.1M=34.2g/L. 30. Bond formation is accompanied by
Increase in energy Decrease in energy Energy remain same The repulsive force dominant over attractive force (b ) Energy is released (ΔH < 0) when bonds form (stable configuration). 31. Which represents the 1st law of thermodynamics
P△V=△E−q △E=q−W △q=△E−P△V △E=P△V (b ) First law: ΔE = q - W (Energy conservation). 32. When 2 ice cube are pressed over each other, they unite to form one cube due to
Ionic interaction Vanderwal force Covalent bond Hydrogen bond formation (d ) Pressure melting and refreezing via H-bonding fuses ice cubes. 33. The ore are concentrated for
Roasting Smelting Calcination Benification (d ) Beneficiation removes gangue to increase ore concentration. 34. The N2 gas is collected by
Upward displacement of air Downward displacement of air Upward displacement of water Downward displacement of water (d ) N2 is slightly soluble in water → collected over water downward. 35. Which of the following is character of Ionic bond
Low melting and boiling point Insoluble in polar solvent Vander waal's force of attraction High melting and boiling point (d ) Ionic compounds have strong electrostatic forces → high m.p./b.p. 36. In which of the following there is change is 5 oxidation state
MnO4 - →Mn2+ Cr2 O4 2- →Mn2+ MnO4 2- →MnO2 Cr2 O7 2- →2Cr3+ (a ) Mn changes from +7 (MnO4 - ) to +2 (Mn2+ ) → ΔO.N.=5. 37. Which is more conducting
(b ) Ag has highest electrical conductivity among metals (6.3×107 S/m). 38. No. of electron in CO2 molecule
(b ) CO2 : C (6e) + 2×O (2×8e) = 22 electrons. 39. Which of the following goes on elimination and substitution rxn but never addition
Alkane Alkene Alkyne Benzene (a ) Alkanes undergo substitution (e.g., halogenation) and elimination (e.g., cracking) but not addition. 40. Which is used in dynamite blasting process
Nitrophenol TNT Nitroglycerine Phenol (c ) Nitroglycerin is the explosive component in dynamite. 41. The Nessler's reagent is used to identity
(d ) Nessler's reagent (K2 [HgI4 ]) detects NH4 + via yellow-brown precipitate. 42. When ammonium cyanate is heated it form urea is an example of
Addition Elimination Substitution Rearrangement (d ) NH4 OCN → (NH2 )2 CO (Wöhler synthesis) involves molecular rearrangement. 43. Which of the following most reactive to nitration
Toulene Benzene Benzoic acid Benzaldehyde (a ) Toluene's -CH3 group activates the ring for electrophilic substitution. 44. When ethyl alcohol is passed to K2 Cr2 O7 the CH3 CHO is formed it is
Addition Reduction Oxidation Elimination (c ) K2 Cr2 O7 oxidizes ethanol (CH3 CH2 OH) to acetaldehyde (CH3 CHO). 45. Which of the following is a functional isomer
Ethyl alcohol and dimethyl ether Methyl alcohol and dimethyl ether Propanoic acids and propanone Acetone and acetaldehyde (a ) C2 H5 OH (alcohol) and CH3 OCH3 (ether) are functional isomers (C2 H6 O). 46. Which of the following does not contain carboxy group
Benzoic acid Picric acid Ascorbic acid Acetyl salicylic acid (b ) Picric acid (2,4,6-trinitrophenol) has -NO2 groups, not -COOH. 47. When nitrobenzene is treated with Zn and Ammonium chloride then
Azobenzene Azoxybenzene Phenyl hydroxylamine Aniline (c ) C6 H5 NO2 + 4[H] → C6 H5 NHOH (phenyl hydroxylamine). 48. Which process convert the optically active to inactive compounds
Racemization Resolution Optical inversion Mutarotation (a ) Racemization produces a 1:1 mixture of enantiomers (optically inactive). 49. Which alcohol is formed from water gas
Ethanol Methanol Propanol Butanol (b ) CO + 2H2 (water gas) → CH3 OH (methanol) via catalytic hydrogenation. 50. Limit test is quantitave and qualitative test used to
To remove large quantity of organic impurity To identify and control small quantities of organic impurity To remove and control small quantities of medicinal impurity To identity and separate medicinal substance (b ) Limit tests detect/control minor impurities (e.g., heavy metals) in pharmaceuticals. 51. Which is the protein factory of the cell?
ER Golgi bodies Ribosomes Mitochondira (c ) Ribosomes synthesize proteins via translation of mRNA. 52. Spicules forming cells is:
Pinocytes Porocyte Choanocyte Fibroblast (c ) Choanocytes in sponges secrete spicules (structural elements). 53. Whale belongs to the class:
Rodientia Carnivora Cetacea Chiroptera (c ) Whales, dolphins, and porpoises are marine mammals of order Cetacea. 54. Which is not a totally blood ingesting parasite?
Trypanosoma Plasmodium Schistosma Ancylostoma (d ) Ancylostoma (hookworm) ingests blood when available but is not an obligate blood parasite. 55. Euglena belongs to the class:
Monera Protista Plantae Animalia (b ) Euglena is a unicellular protist with both plant (chloroplasts) and animal (motility) features. 56. African sleeping sickness is caused by:
Leismania Trypanosoma Wucheria Giardia (b ) Trypanosoma brucei (transmitted by tsetse fly) causes African trypanosomiasis. 57. Locomotion in starfish is occurs by:
Tantacles Feet Water vascular system Cilia (c ) Tube feet (part of water vascular system) enable starfish movement. 58. Water vascular system is found in:
Porifera Coelenterata Echinodermata Mollusca (c ) Unique to echinoderms (starfish, sea urchins). 59. In which of the following animal asexual reproduction is absent?
Paramecium Pheretima Hydra Sponge (b ) Earthworms (Pheretima) reproduce only sexually. 60. What is correct about earthworm?
Fertilization is internal inside ovary Lacunar blood vascular system present Fertilization is external and inside cocoon. It don't have brain (c ) Earthworms are hermaphrodites with cross-fertilization in cocoons. 61. Epidermal cells of hydra has:
Interstitial cell Nematocysts Sensory cell Musculo-endothelial cell (d ) Hydra's epidermis contains epitheliomuscular (musculo-endothelial) cells. 62. In which of the organism pseudocoelom is present?
Coelenterata Hydra Platyhelminthes Nemathelminthes (d ) Nematodes (roundworms) have a pseudocoelom (false body cavity). 63. Which of the following is cold blooded animals?
(c ) Lizards are ectothermic (cold-blooded) reptiles. 64. Acromian process is found in?
Pelvic girdle Pectoral girdle Humerous Radio ulna (b ) Acromion is a scapula feature (part of pectoral girdle). 65. Where do we find malphighian capsule?
Renal cortex Renal medulla Renal calyx Pelvis (a ) Malpighian corpuscles (glomerulus + Bowman's capsule) are in renal cortex. 66. Endocrine part of pancreas is:
Crypts of Leiberkuhn Islets of Langerhans Payer's patches Acinii (b ) Islets of Langerhans secrete insulin/glucagon. 67. During wound healing and infection which tissue are formed?
Lymphatic Reticular Adipose Areolar (d ) Areolar connective tissue forms granulation tissue during healing. 68. Site for hearing in ear is?
Cochlea Sacculus Utriculus Semi circular canal (a ) Cochlea's organ of Corti contains auditory hair cells. 69. Acid rain is caused due to gas which also effect respiratory passage?
(d ) SO2 forms H2 SO4 (acid rain) and irritates respiratory tract. 70. Deoxygenated blood is passed to right auricle in frog from:
Sinus venosus Carotid vein Pulmonary vein Venacava (a ) Sinus venosus collects blood and empties into right atrium. 71. Longest cranial nerve is:
Occulomotor Vagus Abducens Occipatal (b ) Vagus nerve (CN X) extends to abdominal organs. 72. Maximum individual are found in which of the following?
(b ) Species is the basic taxonomic unit with most individuals (e.g., Homo sapiens). 73. Which enzyme is not found in carnivore:
Salivary amylase Lipase Trypsin Pepsin (a ) Carnivores lack salivary amylase (no need to digest plant starch). 74. RBCs are short lived due to:
Nucleus Mitochondria Ribosome Golgi bodies (b ) Lack of mitochondria limits RBC lifespan (~120 days). 75. Which part is not found in frog stomach:
Fundic Pyloric Cardiac Fundic and cardiac (d ) Frog stomach lacks distinct fundic/cardiac regions (unlike mammals). 76. No. of cranial nerve in rabbit:
(d ) Rabbits, like humans, have 12 pairs of cranial nerves. 77. Corpus luteum is formed by?
Germinal epithelial tissue Endometrium Ruptured graffian follicle Luitinise cell (c ) Corpus luteum develops from follicular cells after ovulation. 78. Chromophil cells serve to
Secrete mucus Secrete saliva Pigmentation Fat storage (a ) Chromophil (staining) cells in pituitary secrete hormones (not mucus). (Note: Question may need correction). 79. In which of the following association both the organisms are benefitted?
Symbiosis Commensalism Parasitism Proto-cooperation (a ) Symbiosis (mutualism) benefits both partners (e.g., lichens). 80. Totipotency refers to
Potency of plants to give young one Potency of animals to give young one Potency of plant to reproduce asexually Fusion of gametes during sexual reproduction (c ) Totipotency: Plant cells' ability to regenerate whole organisms (e.g., cuttings). 81. What is the scientific name of Mango?
Mangifera indica Magno champance Morus alba Atropa belloda (a ) Binomial name: Mangifera indica (Anacardiaceae family). 82. Which of the following is a dual complex tissue?
Parenchyma Sclerenchyma Aerenchyma Xylem (d ) Xylem contains both tracheary elements (dead) and parenchyma (living). 83. Trachea, tracheids, wood parenchyma and vessels are present in?
Collenchyma Parenchyma Aerenchyma Xylem (d ) All listed components are part of xylem tissue. 84. Glycolysis occurs in
Golgi complex Cytoplasm Mitochondria ER (b ) Glycolysis (glucose → pyruvate) occurs in cytosol. 85. Which component is most dispersed in a cell?
Carbohydrate Lipid Protein Nucleic acid (c ) Proteins are ubiquitous (membranes, cytoplasm, organelles). 86. The mitotic poison is
Auxin Colchicine Giberellin High temperature (b ) Colchicine arrests mitosis by disrupting spindle fibers. 87. Typical 8 nucleated embryo sac is of which type
Polygonium Allium Atriplex Fritillium (a ) Polygonum-type (most common): 8-nucleate, 7-celled embryo sac. 88. Which of the following is male gametophyte in higher plant?
Microspore Male gamete Pollen grain Microsporangium (c ) Pollen grain is the mature male gametophyte (2-3 cells). 89. A food chain always start with
Decay Photosynthesis Respiration Transpiration (b ) Producers (photoautotrophs) form the base of food chains. 90. In which stage chromosome are arranged in equator?
Prophase Anaphase Metaphase Telophase (c ) Metaphase: Chromosomes align at equatorial plate. 91. In meiosis, bivalent is attached to spindle fiber at
Chromomere Centromere Chromosome Chromatid (b ) Spindle fibers attach to centromeres of paired homologous chromosomes. 92. DNA is genetic material because
It is found in nucleus Produce t-RNA Can replicate Transformation (d ) Avery-MacLeod-McCarty experiment proved DNA mediates transformation. 93. A fruit developed without fertilization
Parthenogenesis Apogamy Parthenocarpy Apospory (c ) Parthenocarpy produces seedless fruits (e.g., banana) without fertilization. 94. Influenza virus is
(a ) Influenza A/B viruses have segmented (-)ssRNA genomes (8 segments). 95. Jute fibre is obtained from
Xylem fibres Bast fibres Epidermal hairs Endosperm (b ) Jute comes from phloem (bast) fibers in Corchorus stems. 96. Site of evaporation of water is
Lenticels Walls of mesophyll cell Stomata Epidermis (c ) Stomatal pores are primary sites for transpiration (water vapor loss). 97. For plasmolysis, cell is placed in
Isotonic Hypothermic Hypotonic Hyperthermic (c ) Plasmolysis occurs in hypertonic solutions (water exits cell). (Note: Option 'c' should be hypertonic). 98. In RNA uracil is present instead of
Adenine Cytocine Guanine Thymine (d ) RNA replaces thymine (T) with uracil (U). 99. Largest cell organelle is
Lysosome Ribosome Chromosome Mitochondria (d ) Mitochondria are the largest organelles (except nucleus in eukaryotes). 