Physics (35 Questions)
1. What is the SI unit of force?
A) Joule
B) Watt
C) Newton
D) Pascal
2. A body moves with constant velocity. What is its acceleration?
A) Positive
B) Zero
C) Negative
D) Variable
3. The work done by a force is zero when the displacement is:
A) Perpendicular to the force
B) Parallel to the force
C) Equal to the force
D) Opposite to the force
4. Which of the following is a vector quantity?
A) Speed
B) Mass
C) Energy
D) Velocity
5. The focal length of a concave mirror is:
A) Positive
B) Negative
C) Zero
D) Infinite
6. The phenomenon of bending of light around obstacles is called:
A) Reflection
B) Refraction
C) Diffraction
D) Polarization
7. The unit of electric potential is:
A) Volt
B) Ampere
C) Ohm
D) Coulomb
8. The resistance of a conductor depends on:
A) Current only
B) Length and cross-sectional area
C) Voltage only
D) Temperature only
9. The speed of sound in air is approximately:
A) 300 m/s
B) 3,000 m/s
C) 330 m/s
D) 33,000 m/s
10. The law of conservation of energy states that:
A) Energy cannot be created or destroyed
B) Energy can be created but not destroyed
C) Energy can be destroyed but not created
D) Energy is always constant
11. The angle of incidence is equal to the angle of reflection in:
A) Refraction
B) Reflection
C) Diffraction
D) Dispersion
12. The SI unit of power is:
A) Newton
B) Joule
C) Volt
D) Watt
13. The force of attraction between two masses is described by:
A) Coulomb’s law
B) Ohm’s law
C) Newton’s law of gravitation
D) Faraday’s law
14. The frequency of a wave is measured in:
A) Hertz
B) Meter
C) Second
D) Joule
15. A convex lens is used to correct:
A) Myopia
B) Hypermetropia
C) Astigmatism
D) Presbyopia
16. The potential difference across a resistor is measured using:
A) Ammeter
B) Galvanometer
C) Voltmeter
D) Ohmmeter
17. The phenomenon of splitting of light into colors is called:
A) Dispersion
B) Diffraction
C) Interference
D) Polarization
18. The specific heat capacity of a substance is defined as:
A) Heat required to raise the temperature of 1 kg by 1°C
B) Heat required to raise the temperature of 1 g by 1°C
C) Heat required to change the state of 1 kg
D) Heat required to change the state of 1 g
19. The magnetic field inside a solenoid is:
A) Zero
B) Non-uniform
C) Circular
D) Uniform
20. The principle behind the working of a transformer is:
A) Ohm’s law
B) Lenz’s law
C) Electromagnetic induction
D) Newton’s law
21. The speed of light in a vacuum is approximately:
A) 3 × 10^8 m/s
B) 3 × 10^6 m/s
C) 3 × 10^10 m/s
D) 3 × 10^4 m/s
22. The unit of electric charge is:
A) Ampere
B) Coulomb
C) Volt
D) Ohm
23. The energy stored in a capacitor is given by:
A) CV
B) 1/2 CV
C) 1/2 CV^2
D) CV^2
24. The refractive index of a medium is defined as:
A) Speed of light in vacuum / Speed of light in medium
B) Speed of light in medium / Speed of light in vacuum
C) Wavelength in vacuum / Wavelength in medium
D) Frequency in vacuum / Frequency in medium
25. The unit of magnetic flux is:
A) Tesla
B) Weber
C) Gauss
D) Henry
26. The first law of thermodynamics is related to:
A) Entropy
B) Work done
C) Conservation of energy
D) Heat transfer
27. The minimum energy required to remove an electron from an atom is called:
A) Work function
B) Binding energy
C) Ionization energy
D) Kinetic energy
28. The image formed by a plane mirror is:
A) Real and inverted
B) Virtual and erect
C) Real and erect
D) Virtual and inverted
29. The SI unit of pressure is:
A) Newton
B) Joule
C) Pascal
D) Watt
30. The phenomenon of total internal reflection occurs when light travels from:
A) Denser to rarer medium
B) Rarer to denser medium
C) Vacuum to medium
D) Medium to vacuum
31. The direction of induced current is given by:
A) Newton’s law
B) Lenz’s law
C) Coulomb’s law
D) Ohm’s law
32. The half-life of a radioactive substance is the time taken for:
A) Complete decay
B) One-third decay
C) Half of the substance to decay
D) One-fourth decay
33. The power of a lens is measured in:
A) Dioptre
B) Watt
C) Joule
D) Meter
34. The unit of specific resistance is:
A) Ohm
B) Ohm-meter
C) Volt
D) Ampere
35. The Doppler effect is observed in:
A) Electric field
B) Magnetic field
C) Sound and light waves
D) Gravitational field
Chemistry (35 Questions)
36. The atomic number of an element is equal to the number of:
A) Neutrons
B) Protons
C) Electrons
D) Nucleons
37. The chemical formula of water is:
A) H₂O
B) H₂O₂
C) HO
D) H₃O
38. The pH of a neutral solution is:
A) 0
B) 14
C) 7
D) 1
39. The gas used in balloons is:
A) Hydrogen
B) Helium
C) Nitrogen
D) Oxygen
40. The bond formed by sharing of electrons is called:
A) Covalent bond
B) Ionic bond
C) Metallic bond
D) Hydrogen bond
41. The main source of energy in the sun is:
A) Fission
B) Combustion
C) Fusion
D) Oxidation
42. The number of electrons in the outermost shell of a noble gas is:
A) 2
B) 8
C) 1
D) 18
43. The process of conversion of a solid directly into a gas is called:
A) Sublimation
B) Evaporation
C) Condensation
D) Melting
44. The chemical formula of sodium chloride is:
A) NaCl₂
B) Na₂Cl
C) NaCl
D) Na₂Cl₂
45. The catalyst used in the Haber process for ammonia synthesis is:
A) Platinum
B) Iron
C) Nickel
D) Copper
46. The molecular formula of glucose is:
A) C₆H₁₂O₆
B) C₆H₁₀O₅
C) C₅H₁₀O₅
D) C₆H₁₂O₅
47. The oxidation state of oxygen in H₂O₂ is:
A) +1
B) +2
C) -1
D) -2
48. The IUPAC name of CH₃OH is:
A) Ethanol
B) Methanol
C) Propanol
D) Butanol
49. The gas responsible for the greenhouse effect is:
A) Carbon dioxide
B) Nitrogen
C) Oxygen
D) Helium
50. The functional group in alcohols is:
A) -COOH
B) -CHO
C) -OH
D) -NH₂
51. The process of rusting of iron involves:
A) Reduction
B) Oxidation
C) Sublimation
D) Neutralization
52. The chemical formula of ozone is:
A) O₃
B) O₂
C) O
D) O₄
53. The monomer of polythene is:
A) Ethyne
B) Propene
C) Ethene
D) Butene
54. The element with atomic number 17 belongs to:
A) Alkali metals
B) Halogens
C) Noble gases
D) Transition metals
55. The process of removing impurities from a crude metal is called:
A) Refining
B) Roasting
C) Calcination
D) Smelting
56. The boiling point of water at standard atmospheric pressure is:
A) 0°C
B) 50°C
C) 100°C
D) 150°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 temperature
C) No change in temperature
D) Decrease in concentration
59. The valency of carbon in CH₄ is:
A) 1
B) 2
C) 4
D) 3
60. The hardest naturally occurring substance is:
A) Graphite
B) Diamond
C) Quartz
D) Talc
61. The primary source of energy for Earth’s climate system is:
A) Sun
B) Moon
C) Earth’s core
D) Wind
62. The chemical formula of sulfuric acid is:
A) HCl
B) HNO₃
C) H₂SO₄
D) H₃PO₄
63. The gas used in fire extinguishers is:
A) Oxygen
B) Carbon dioxide
C) Nitrogen
D) Hydrogen
64. The process of conversion of a gas into a liquid is called:
A) Condensation
B) Evaporation
C) Sublimation
D) Melting
65. The element used in thermometers is:
A) Sodium
B) Potassium
C) Mercury
D) Calcium
66. The chemical name of common salt is:
A) Sodium carbonate
B) Sodium chloride
C) Sodium bicarbonate
D) Sodium hydroxide
67. The type of bond in NaCl is:
A) Ionic
B) Covalent
C) Metallic
D) Hydrogen
68. The atomic mass unit is defined as:
A) Mass of one proton
B) Mass of one neutron
C) 1/12th mass of a carbon-12 atom
D) Mass of one electron
69. The gas that causes acid rain is:
A) Carbon monoxide
B) Sulfur dioxide
C) Nitrogen
D) Oxygen
70. The IUPAC name of CH₃COOH is:
A) Ethanoic acid
B) Methanoic acid
C) Propanoic acid
D) Butanoic acid
Biology (30 Questions)
71. The powerhouse of the cell is:
A) Nucleus
B) Ribosome
C) Mitochondrion
D) Golgi apparatus
72. The process of photosynthesis occurs in:
A) Mitochondria
B) Chloroplast
C) Nucleus
D) Endoplasmic reticulum
73. The genetic material in humans is:
A) DNA
B) RNA
C) Protein
D) Lipid
74. The number of chromosomes in a human cell is:
A) 23
B) 48
C) 46
D) 44
75. The primary source of energy for Earth’s ecosystems is:
A) Soil
B) Sunlight
C) Water
D) Air
76. The process by which plants lose water through leaves is called:
A) Transpiration
B) Photosynthesis
C) Respiration
D) Guttation
77. The enzyme that breaks down starch into sugar is:
A) Pepsin
B) Trypsin
C) Amylase
D) Lipase
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) Neuron
B) Alveolus
C) Nephron
D) Bronchus
81. The pigment responsible for skin color is:
A) Hemoglobin
B) Melanin
C) Chlorophyll
D) Carotene
82. The deficiency of Vitamin C causes:
A) Scurvy
B) Rickets
C) Beriberi
D) Night blindness
83. The site of protein synthesis in a cell is:
A) Nucleus
B) Mitochondria
C) Ribosome
D) Lysosome
84. The gas exchanged during respiration in humans is:
A) Nitrogen
B) Oxygen and carbon dioxide
C) Helium
D) Hydrogen
85. The process of breakdown of glucose to release energy is called:
A) Respiration
B) Photosynthesis
C) Transpiration
D) Fermentation
86. The largest gland in the human body is:
A) Pancreas
B) Thyroid
C) Liver
D) Pituitary
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) Scurvy
C) Rickets
D) Anemia
89. The process of formation of gametes is called:
A) Mitosis
B) Binary fission
C) Meiosis
D) Budding
90. The organ responsible for pumping blood in humans is:
A) Lungs
B) Heart
C) Kidney
D) Liver
91. The pigment that gives plants their green color is:
A) Chlorophyll
B) Hemoglobin
C) Melanin
D) Carotene
92. The smallest unit of life is:
A) Tissue
B) Organ
C) Cell
D) Organism
93. The part of the brain responsible for balance 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) Digestion of proteins
B) Absorption of nutrients
C) Absorption of water
D) Secretion of enzymes
96. The causative agent of malaria is:
A) Virus
B) Protozoa
C) Bacteria
D) Fungus
97. The process of conversion of nitrogen into nitrates is called:
A) Nitrogen fixation
B) Denitrification
C) Ammonification
D) Nitrification
98. The tissue that connects muscles to bones is:
A) Ligament
B) Cartilage
C) Tendon
D) Adipose
99. The vitamin essential for blood clotting is:
A) Vitamin A
B) Vitamin K
C) Vitamin C
D) Vitamin D
100. The process by which organisms maintain a stable internal environment is called:
A) Homeostasis
B) Metabolism
C) Photosynthesis
D) Respiration
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