Physics (35 Questions)
1. The SI unit of momentum is:
A) kg·m
B) kg·m/s
C) kg·m/s²
D) kg/s
2. The rate of change of velocity is called:
A) Acceleration
B) Speed
C) Distance
D) Displacement
3. The energy possessed by a body due to its position is:
A) Kinetic energy
B) Thermal energy
C) Potential energy
D) Chemical energy
4. The unit of angular velocity is:
A) m/s
B) rad/s²
C) m/s²
D) rad/s
5. The image formed by a convex mirror is always:
A) Virtual and diminished
B) Real and magnified
C) Real and diminished
D) Virtual and magnified
6. The phenomenon of superposition of waves is observed in:
A) Diffraction
B) Interference
C) Refraction
D) Polarization
7. The SI unit of current is:
A) Volt
B) Ohm
C) Ampere
D) Watt
8. The equivalent resistance of resistors in parallel is:
A) Less than the smallest resistance
B) Equal to the largest resistance
C) Sum of all resistances
D) Average of all resistances
9. The speed of electromagnetic waves in a vacuum is:
A) 3 × 10^6 m/s
B) 3 × 10^7 m/s
C) 3 × 10^9 m/s
D) 3 × 10^8 m/s
10. The second law of motion states that force is equal to:
A) Mass × velocity
B) Mass × acceleration
C) Momentum × time
D) Velocity × time
11. The critical angle is related to:
A) Total internal reflection
B) Refraction
C) Diffraction
D) Dispersion
12. The unit of impulse is:
A) N/m
B) kg·m/s²
C) kg·m/s
D) N·m
13. The magnetic effect of electric current was discovered by:
A) Faraday
B) Oersted
C) Ampere
D) Maxwell
14. The wavelength of a wave is measured in:
A) Meter
B) Hertz
C) Second
D) Joule
15. A concave lens is used to correct:
A) Hypermetropia
B) Presbyopia
C) Myopia
D) Astigmatism
16. The device used to measure electric current is:
A) Voltmeter
B) Ohmmeter
C) Galvanometer
D) Ammeter
17. The phenomenon of light scattering by particles is called:
A) Diffraction
B) Tyndall effect
C) Refraction
D) Reflection
18. The latent heat of fusion is associated with:
A) Solid to liquid
B) Liquid to gas
C) Gas to liquid
D) Solid to gas
19. The magnetic field lines around a current-carrying wire are:
A) Straight
B) Elliptical
C) Circular
D) Parabolic
20. The principle behind an electric motor is:
A) Electromagnetic induction
B) Magnetic effect of current
C) Ohm’s law
D) Faraday’s law
21. The speed of sound in water is approximately:
A) 1500 m/s
B) 330 m/s
C) 3000 m/s
D) 1000 m/s
22. The unit of capacitance is:
A) Ohm
B) Volt
C) Farad
D) Henry
23. The energy stored in an inductor is given by:
A) LI²
B) 1/2 LI²
C) LI
D) 1/2 LI
24. The angle of deviation in a prism depends on:
A) Angle of incidence
B) Wavelength of light
C) Material of prism
D) All of the above
25. The unit of magnetic field strength is:
A) Weber
B) Tesla
C) Gauss
D) Farad
26. The second law of thermodynamics is related to:
A) Conservation of energy
B) Work done
C) Entropy
D) Heat transfer
27. The energy of a photon is given by:
A) hv²
B) hv
C) h/v
D) h²v
28. The image formed by a convex lens when the object is at infinity is:
A) Real and at the focus
B) Virtual and magnified
C) Real and magnified
D) Virtual and at the focus
29. The SI unit of density is:
A) kg/m²
B) kg/m³
C) g/cm²
D) g/m³
30. The phenomenon responsible for the blue color of the sky is:
A) Diffraction
B) Reflection
C) Scattering
D) Refraction
31. The force acting on a current-carrying conductor in a magnetic field is given by:
A) Fleming’s left-hand rule
B) Fleming’s right-hand rule
C) Lenz’s law
D) Ohm’s law
32. The decay constant of a radioactive substance is related to:
A) Atomic mass
B) Half-life
C) Atomic number
D) Binding energy
33. The magnifying power of a microscope depends on:
A) Focal length of lenses
B) Aperture of lenses
C) Size of the object
D) Distance of the object
34. The unit of electrical conductivity is:
A) Ohm
B) Ohm-meter
C) Siemens per meter
D) Ampere
35. The effect of a magnetic field on a moving charge is described by:
A) Coulomb’s law
B) Lorentz force
C) Ohm’s law
D) Faraday’s law
Chemistry (35 Questions)
36. The mass number of an element is equal to the number of:
A) Protons and neutrons
B) Protons only
C) Neutrons only
D) Electrons and protons
37. The chemical formula of carbon dioxide is:
A) CO
B) CO₂
C) C₂O
D) C₂O₂
38. The pH of an acidic solution is:
A) Less than 7
B) Greater than 7
C) Equal to 7
D) Equal to 14
39. The gas used in refrigeration is:
A) Nitrogen
B) Oxygen
C) Freon
D) Helium
40. The bond formed by the transfer of electrons is called:
A) Covalent bond
B) Ionic bond
C) Metallic bond
D) Hydrogen bond
41. The primary source of energy in stars like the sun is:
A) Nuclear fusion
B) Nuclear fission
C) Chemical reaction
D) Combustion
42. The number of electrons in the outermost shell of an alkali metal is:
A) 2
B) 1
C) 8
D) 7
43. The process of conversion of a liquid into a gas is called:
A) Sublimation
B) Condensation
C) Evaporation
D) Melting
44. The chemical formula of calcium carbonate is:
A) CaCO₃
B) CaCl₂
C) CaSO₄
D) Ca(OH)₂
45. The catalyst used in the contact process for sulfuric acid production is:
A) Iron
B) Nickel
C) Vanadium pentoxide
D) Platinum
46. The molecular formula of ethanol is:
A) CH₃OH
B) C₂H₅OH
C) C₃H₇OH
D) C₄H₉OH
47. The oxidation state of chlorine in HCl is:
A) +1
B) +2
C) 0
D) -1
48. The IUPAC name of CH₃CH₂OH is:
A) Methanol
B) Propanol
C) Ethanol
D) Butanol
49. The gas responsible for ozone layer depletion is:
A) Carbon dioxide
B) Chlorofluorocarbon
C) Nitrogen
D) Sulfur dioxide
50. The functional group in aldehydes is:
A) -CHO
B) -COOH
C) -OH
D) -NH₂
51. The process of corrosion involves:
A) Reduction
B) Sublimation
C) Oxidation
D) Neutralization
52. The chemical formula of nitrous oxide is:
A) NO
B) N₂O
C) NO₂
D) N₂O₅
53. The monomer of PVC is:
A) Vinyl chloride
B) Ethene
C) Propene
D) Styrene
54. The element with atomic number 18 belongs to:
A) Alkali metals
B) Halogens
C) Noble gases
D) Transition metals
55. The process of heating an ore in the presence of oxygen is called:
A) Smelting
B) Roasting
C) Calcination
D) Refining
56. The freezing point of water at standard atmospheric pressure is:
A) 0°C
B) 100°C
C) -10°C
D) 50°C
57. The chemical name of washing soda is:
A) Sodium chloride
B) Sodium bicarbonate
C) Sodium carbonate
D) Sodium hydroxide
58. The rate of a chemical reaction decreases with:
A) Increase in temperature
B) Decrease in concentration
C) Increase in pressure
D) Use of a catalyst
59. The valency of oxygen in H₂O is:
A) 1
B) 4
C) 2
D) 3
60. The softest naturally occurring substance is:
A) Talc
B) Diamond
C) Quartz
D) Graphite
61. The gas essential for photosynthesis is:
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
62. The chemical formula of hydrochloric acid is:
A) HCl
B) H₂SO₄
C) HNO₃
D) H₃PO₄
63. The gas used in soda water is:
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Helium
64. The process of conversion of a liquid into a solid is called:
A) Evaporation
B) Freezing
C) Sublimation
D) Condensation
65. The element used in fluorescent lamps is:
A) Mercury
B) Sodium
C) Calcium
D) Potassium
66. The chemical name of caustic soda is:
A) Sodium chloride
B) Sodium carbonate
C) Sodium bicarbonate
D) Sodium hydroxide
67. The type of bond in CH₄ is:
A) Ionic
B) Metallic
C) Covalent
D) Hydrogen
68. The atomic mass unit is based on the mass of:
A) Hydrogen-1
B) Carbon-12
C) Oxygen-16
D) Nitrogen-14
69. The gas that causes global warming is:
A) Methane
B) Nitrogen
C) Oxygen
D) Helium
70. The IUPAC name of HCOOH is:
A) Ethanoic acid
B) Methanoic acid
C) Propanoic acid
D) Butanoic acid
Biology (30 Questions)
71. The control center of the cell is:
A) Mitochondrion
B) Nucleus
C) Ribosome
D) Lysosome
72. The process of respiration occurs in:
A) Mitochondria
B) Chloroplast
C) Nucleus
D) Endoplasmic reticulum
73. The molecule that carries genetic information from DNA to ribosomes is:
A) DNA
B) RNA
C) Protein
D) Lipid
74. The number of chromosomes in human gametes is:
A) 23
B) 46
C) 48
D) 44
75. The primary source of energy for Earth’s food chains is:
A) Soil
B) Water
C) Sunlight
D) Air
76. The process by which plants absorb water from soil is called:
A) Transpiration
B) Osmosis
C) Photosynthesis
D) Respiration
77. The enzyme that breaks down fats is:
A) Amylase
B) Pepsin
C) Trypsin
D) Lipase
78. The blood group known as the universal recipient is:
A) A
B) O
C) AB
D) B
79. The process of cell division in reproductive cells is called:
A) Mitosis
B) Meiosis
C) Binary fission
D) Budding
80. The structural unit of the lungs is:
A) Nephron
B) Alveolus
C) Neuron
D) Bronchus
81. The pigment responsible for oxygen transport in blood is:
A) Melanin
B) Chlorophyll
C) Hemoglobin
D) Carotene
82. The deficiency of Vitamin D causes:
A) Scurvy
B) Rickets
C) Beriberi
D) Night blindness
83. The site of DNA replication in a cell is:
A) Nucleus
B) Mitochondria
C) Ribosome
D) Lysosome
84. The gas exchanged during photosynthesis in plants is:
A) Nitrogen
B) Carbon dioxide and oxygen
C) Helium
D) Hydrogen
85. The process of breakdown of sugars in the absence of oxygen is called:
A) Respiration
B) Photosynthesis
C) Transpiration
D) Fermentation
86. The smallest gland in the human body is:
A) Liver
B) Thyroid
C) Pancreas
D) Pituitary
87. The tissue responsible for transport of food in plants is:
A) Phloem
B) Xylem
C) Parenchyma
D) Collenchyma
88. The disease caused by the deficiency of iron is:
A) Goitre
B) Scurvy
C) Rickets
D) Anemia
89. The process of formation of spores in bacteria is called:
A) Sporulation
B) Meiosis
C) Mitosis
D) Binary fission
90. The organ responsible for filtering blood in humans is:
A) Heart
B) Lungs
C) Kidney
D) Liver
91. The pigment that gives carrots their orange color is:
A) Chlorophyll
B) Hemoglobin
C) Melanin
D) Carotene
92. The basic unit of classification in biology is:
A) Genus
B) Family
C) Species
D) Order
93. The part of the brain responsible for involuntary actions is:
A) Cerebrum
B) Cerebellum
C) Medulla
D) Hypothalamus
94. The hormone that prepares the body for emergency situations is:
A) Insulin
B) Adrenaline
C) Thyroxine
D) Oxytocin
95. The main function of the small intestine is:
A) Absorption of water
B) Absorption of nutrients
C) Digestion of proteins
D) Secretion of bile
96. The causative agent of tuberculosis is:
A) Virus
B) Protozoa
C) Bacteria
D) Fungus
97. The process of conversion of nitrates into nitrogen gas is called:
A) Nitrogen fixation
B) Nitrification
C) Ammonification
D) Denitrification
98. The tissue that connects bones to bones is:
A) Ligament
B) Tendon
C) Cartilage
D) Adipose
99. The vitamin essential for vision is:
A) Vitamin A
B) Vitamin K
C) Vitamin C
D) Vitamin D
100. The sum of all chemical reactions in an organism is called:
A) Homeostasis
B) Metabolism
C) Photosynthesis
D) Respiration
No comments:
Post a Comment