Physics (35 Questions)
1. The SI unit of power is:
A) Joule
B) Newton
C) Watt
D) Pascal
2. The force that opposes the motion of an object is called:
A) Tension
B) Friction
C) Gravity
D) Buoyancy
3. The work done by a force is measured in:
A) Joule
B) Watt
C) Newton
D) Pascal
4. The unit of frequency is:
A) Meter
B) Second
C) Ampere
D) Hertz
5. The image formed by a plane mirror is:
A) Real and inverted
B) Virtual and erect
C) Real and erect
D) Virtual and inverted
6. The bending of light around an obstacle is called:
A) Diffraction
B) Reflection
C) Refraction
D) Dispersion
7. The SI unit of resistance is:
A) Ampere
B) Ohm
C) Volt
D) Watt
8. The equivalent resistance of resistors in series is:
A) Less than the smallest resistance
B) Equal to the smallest resistance
C) Sum of all resistances
D) Average of all resistances
9. The speed of light in air is approximately:
A) 3 × 10^8 m/s
B) 3 × 10^7 m/s
C) 3 × 10^6 m/s
D) 3 × 10^9 m/s
10. The first law of motion is also known as the law of:
A) Acceleration
B) Force
C) Inertia
D) Momentum
11. The splitting of white light into colors is called:
A) Refraction
B) Dispersion
C) Interference
D) Diffraction
12. The unit of pressure is:
A) Pascal
B) Joule
C) Newton
D) Watt
13. The electromagnetic induction was discovered by:
A) Oersted
B) Ampere
C) Maxwell
D) Faraday
14. The time period of a wave is measured in:
A) Meter
B) Second
C) Hertz
D) Joule
15. A convex lens is used to correct:
A) Hypermetropia
B) Myopia
C) Astigmatism
D) Presbyopia
16. The device used to measure potential difference is:
A) Voltmeter
B) Ammeter
C) Galvanometer
D) Ohmmeter
17. The phenomenon of bending of light when it passes from one medium to another is called:
A) Reflection
B) Diffraction
C) Refraction
D) Interference
18. The latent heat of vaporization is associated with:
A) Solid to liquid
B) Liquid to gas
C) Gas to solid
D) Liquid to solid
19. The magnetic field inside a solenoid is:
A) Uniform
B) Circular
C) Elliptical
D) Parabolic
20. The principle behind an electric generator is:
A) Magnetic effect of current
B) Ohm’s law
C) Joule’s law
D) Electromagnetic induction
21. The speed of sound in air at 0°C is approximately:
A) 1500 m/s
B) 331 m/s
C) 1000 m/s
D) 3000 m/s
22. The unit of inductance is:
A) Ohm
B) Farad
C) Volt
D) Henry
23. The energy stored in a capacitor is given by:
A) 1/2 CV²
B) CV²
C) 1/2 CV
D) CV
24. The colors of light observed in a rainbow are due to:
A) Reflection
B) Diffraction
C) Interference
D) Dispersion
25. The unit of magnetic flux is:
A) Weber
B) Tesla
C) Gauss
D) Henry
26. The first law of thermodynamics is related to:
A) Conservation of energy
B) Entropy
C) Heat transfer
D) Work done
27. The momentum of a photon is given by:
A) hv
B) h/v
C) h/λ
D) hv²
28. The image formed by a concave mirror when the object is beyond the center of curvature is:
A) Virtual and magnified
B) Real and diminished
C) Virtual and diminished
D) Real and magnified
29. The SI unit of specific heat capacity is:
A) J/kg·K
B) J/kg
C) J/K
D) J/m³
30. The phenomenon responsible for the twinkling of stars is:
A) Diffraction
B) Reflection
C) Scattering
D) Refraction
31. The force on a charged particle in an electric field is given by:
A) F = qvB
B) F = qE
C) F = qB
D) F = qvE
32. The half-life of a radioactive substance is the time taken for:
A) Half the substance to decay
B) All the substance to decay
C) One-third of the substance to decay
D) Twice the substance to decay
33. The resolving power of a telescope depends on:
A) Focal length of eyepiece
B) Aperture of objective lens
C) Distance of object
D) Magnification of eyepiece
34. The unit of electric field strength is:
A) Newton per coulomb
B) Joule per coulomb
C) Watt per coulomb
D) Ampere per coulomb
35. The effect of an electric field on a moving charge is described by:
A) Faraday’s law
B) Coulomb’s law
C) Lorentz force
D) Ohm’s law
Chemistry (35 Questions)
36. The atomic number of an element is equal to the number of:
A) Neutrons
B) Protons
C) Electrons and neutrons
D) Protons and neutrons
37. The chemical formula of water is:
A) H₂O
B) CO₂
C) H₂O₂
D) NH₃
38. The pH of a neutral solution is:
A) Less than 7
B) Equal to 7
C) Greater than 7
D) Equal to 14
39. The gas used in balloons is:
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Helium
40. The bond formed by sharing of electrons is called:
A) Covalent bond
B) Ionic bond
C) Metallic bond
D) Hydrogen bond
41. The primary source of energy in nuclear power plants is:
A) Nuclear fusion
B) Nuclear fission
C) Chemical reaction
D) Combustion
42. The number of electrons in the outermost shell of a noble gas is:
A) 1
B) 2
C) 8
D) 7
43. The process of conversion of a gas into a liquid is called:
A) Evaporation
B) Condensation
C) Sublimation
D) Freezing
44. The chemical formula of sodium chloride is:
A) NaCO₃
B) NaCl
C) NaOH
D) Na₂SO₄
45. The catalyst used in the Haber process for ammonia production is:
A) Platinum
B) Nickel
C) Vanadium pentoxide
D) Iron
46. The molecular formula of methane is:
A) CH₄
B) C₂H₆
C) C₃H₈
D) C₄H₁₀
47. The oxidation state of oxygen in H₂O is:
A) -2
B) -1
C) 0
D) +2
48. The IUPAC name of CH₃COOH is:
A) Methanoic acid
B) Ethanoic acid
C) Propanoic acid
D) Butanoic acid
49. The gas responsible for acid rain is:
A) Sulfur dioxide
B) Carbon dioxide
C) Nitrogen
D) Helium
50. The functional group in ketones is:
A) -CHO
B) -CO-
C) -OH
D) -COOH
51. The process of rusting involves:
A) Oxidation
B) Reduction
C) Neutralization
D) Sublimation
52. The chemical formula of carbon monoxide is:
A) CO₂
B) C₂O
C) CO
D) C₂O₂
53. The monomer of polyethylene is:
A) Vinyl chloride
B) Ethene
C) Styrene
D) Propene
54. The element with atomic number 17 belongs to:
A) Noble gases
B) Halogens
C) Alkali metals
D) Transition metals
55. The process of heating an ore in the absence of oxygen is called:
A) Roasting
B) Smelting
C) Calcination
D) Refining
56. The boiling point of water at standard atmospheric pressure is:
A) 0°C
B) 100°C
C) 50°C
D) -10°C
57. The chemical name of baking soda is:
A) Sodium chloride
B) Sodium bicarbonate
C) Sodium carbonate
D) Sodium hydroxide
58. The rate of a chemical reaction increases with:
A) Increase in temperature
B) Decrease in pressure
C) Decrease in concentration
D) Absence of a catalyst
59. The valency of nitrogen in NH₃ is:
A) 2
B) 3
C) 4
D) 1
60. The hardest naturally occurring substance is:
A) Talc
B) Diamond
C) Graphite
D) Quartz
61. The gas produced during photosynthesis is:
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
62. The chemical formula of sulfuric acid is:
A) HCl
B) H₂SO₄
C) HNO₃
D) H₃PO₄
63. The gas used in fire extinguishers is:
A) Nitrogen
B) Oxygen
C) Helium
D) Carbon dioxide
64. The process of conversion of a solid into a gas is called:
A) Sublimation
B) Condensation
C) Freezing
D) Evaporation
65. The element used in incandescent lamps is:
A) Mercury
B) Tungsten
C) Sodium
D) Potassium
66. The chemical name of quicklime is:
A) Sodium hydroxide
B) Sodium carbonate
C) Calcium oxide
D) Calcium hydroxide
67. The type of bond in NaCl is:
A) Ionic
B) Covalent
C) Metallic
D) Hydrogen
68. The atomic mass unit is approximately equal to the mass of:
A) Proton
B) Electron
C) 1/12th of Carbon-12
D) Neutron
69. The gas that contributes to the greenhouse effect is:
A) Nitrogen
B) Carbon dioxide
C) Oxygen
D) Helium
70. The IUPAC name of CH₃CH₂CH₂OH is:
A) Methanol
B) Ethanol
C) Propanol
D) Butanol
Biology (30 Questions)
71. The powerhouse of the cell is:
A) Mitochondrion
B) Nucleus
C) Ribosome
D) Lysosome
72. The process of photosynthesis occurs in:
A) Mitochondria
B) Chloroplast
C) Nucleus
D) Endoplasmic reticulum
73. The molecule that stores genetic information is:
A) RNA
B) Protein
C) DNA
D) Lipid
74. The number of chromosomes in human somatic cells is:
A) 23
B) 46
C) 48
D) 44
75. The primary producers in an ecosystem are:
A) Plants
B) Herbivores
C) Carnivores
D) Decomposers
76. The process by which plants lose water vapor is called:
A) Transpiration
B) Osmosis
C) Photosynthesis
D) Respiration
77. The enzyme that breaks down proteins is:
A) Amylase
B) Pepsin
C) Lipase
D) Maltase
78. The blood group known as the universal donor is:
A) A
B) O
C) AB
D) B
79. The process of cell division in somatic cells is called:
A) Mitosis
B) Meiosis
C) Binary fission
D) Budding
80. The structural unit of the kidney is:
A) Alveolus
B) Neuron
C) Nephron
D) Bronchus
81. The pigment responsible for photosynthesis in plants is:
A) Hemoglobin
B) Chlorophyll
C) Melanin
D) Carotene
82. The deficiency of Vitamin C causes:
A) Scurvy
B) Rickets
C) Beriberi
D) Anemia
83. The site of protein synthesis in a cell is:
A) Nucleus
B) Ribosome
C) Mitochondria
D) Lysosome
84. The gas absorbed during photosynthesis in plants is:
A) Carbon dioxide
B) Oxygen
C) Nitrogen
D) Hydrogen
85. The process of breakdown of sugars in the presence of oxygen is called:
A) Fermentation
B) Aerobic respiration
C) Photosynthesis
D) Transpiration
86. The largest gland in the human body is:
A) Pituitary
B) Liver
C) Thyroid
D) Pancreas
87. The tissue responsible for transport of water in plants is:
A) Phloem
B) Xylem
C) Parenchyma
D) Collenchyma
88. The disease caused by the deficiency of iodine is:
A) Goitre
B) Anemia
C) Scurvy
D) Rickets
89. The process of cell division in bacteria is called:
A) Mitosis
B) Meiosis
C) Binary fission
D) Sporulation
90. The organ responsible for gas exchange in humans is:
A) Heart
B) Lungs
C) Kidney
D) Liver
91. The pigment that gives blood its red color is:
A) Chlorophyll
B) Hemoglobin
C) Melanin
D) Carotene
92. The highest level of biological classification is:
A) Kingdom
B) Phylum
C) Class
D) Species
93. The part of the brain responsible for coordination is:
A) Cerebrum
B) Cerebellum
C) Medulla
D) Hypothalamus
94. The hormone that regulates blood sugar levels is:
A) Insulin
B) Adrenaline
C) Thyroxine
D) Oxytocin
95. The main function of the large intestine is:
A) Absorption of water
B) Absorption of nutrients
C) Digestion of proteins
D) Secretion of bile
96. The causative agent of malaria is:
A) Protozoa
B) Bacteria
C) Virus
D) Fungus
97. The process of conversion of atmospheric nitrogen into nitrates is called:
A) Nitrogen fixation
B) Denitrification
C) Nitrification
D) Ammonification
98. The tissue that connects muscles to bones is:
A) Ligament
B) Tendon
C) Cartilage
D) Adipose
99. The vitamin essential for blood clotting is:
A) Vitamin A
B) Vitamin K
C) Vitamin C
D) Vitamin D
100. The maintenance of a constant internal environment in an organism is called:
A) Homeostasis
B) Metabolism
C) Photosynthesis
D) Respiration
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