Odisha SSB TGT (CBZ) – Mock Test 7
Latest SSB Pattern | High Difficulty Level
Total Questions: 100
Total Marks: 150
Time: 2 Hours
Negative Marking: −0.5
BOTANY (Questions 1–28)
Cell Biology
1. Which component of the plasma membrane is mainly responsible for membrane fluidity?
A. Cellulose
B. Phospholipids
C. DNA
D. RNA
2. Ribosomes attached to rough endoplasmic reticulum synthesize:
A. Membrane proteins
B. Lipids
C. ATP
D. Cellulose
3. Which organelle is involved in intracellular digestion?
A. Golgi apparatus
B. Lysosome
C. Mitochondrion
D. Ribosome
4. The primary cell wall is mainly composed of:
A. Lignin
B. Cellulose
C. Chitin
D. Cutin
5. Microtubules are mainly composed of:
A. Actin
B. Tubulin
C. Keratin
D. Collagen
Plant Anatomy
6. Passage cells are present in the:
A. Epidermis
B. Cortex
C. Endodermis
D. Pericycle
7. Protoxylem develops:
A. Before metaxylem
B. After metaxylem
C. Along with phloem
D. After secondary growth
8. Which tissue is living at maturity?
A. Vessel
B. Tracheid
C. Companion cell
D. Xylem fibre
9. Annual rings are produced due to the activity of:
A. Cork cambium
B. Vascular cambium
C. Apical meristem
D. Intercalary meristem
Plant Physiology
10. The ascent of sap is best explained by:
A. Root pressure theory
B. Cohesion–Tension theory
C. Imbibition theory
D. Diffusion theory
11. Which element is essential for the photolysis of water?
A. Calcium
B. Manganese
C. Potassium
D. Iron
12. Wilting of plants occurs when:
A. Osmotic pressure is low
B. Turgor pressure becomes zero
C. Diffusion pressure deficit is zero
D. Photosynthesis increases
Photosynthesis
13. The reaction centre of Photosystem I is:
A. P680
B. P700
C. Chlorophyll b
D. Xanthophyll
14. In the Calvin cycle, the enzyme responsible for CO₂ fixation is:
A. ATP synthase
B. Rubisco
C. Catalase
D. Peroxidase
15. Cyclic photophosphorylation produces:
A. ATP only
B. NADPH only
C. ATP and NADPH
D. Oxygen only
16. Kranz anatomy is an adaptation for:
A. CAM pathway
B. C₄ photosynthesis
C. Photorespiration
D. Nitrogen fixation
Respiration
17. The enzyme catalysing the conversion of pyruvate to acetyl-CoA is:
A. Hexokinase
B. Pyruvate dehydrogenase
C. ATP synthase
D. Citrate synthase
18. FADH₂ is produced during:
A. Glycolysis
B. Krebs cycle
C. Calvin cycle
D. Fermentation
19. The maximum ATP is generated during:
A. Glycolysis
B. Krebs cycle
C. Electron Transport Chain
D. Fermentation
Genetics & Molecular Biology
20. Transformation was first demonstrated by:
A. Avery
B. Griffith
C. Hershey
D. Watson
21. Okazaki fragments are synthesized during:
A. Transcription
B. DNA replication
C. Translation
D. Mutation
22. The anticodon is present on:
A. mRNA
B. tRNA
C. rRNA
D. DNA
Biotechnology
23. Restriction enzymes are also known as:
A. Molecular scissors
B. Molecular glue
C. Molecular motors
D. Molecular pumps
24. The selectable marker gene in recombinant DNA technology is mainly used for:
A. DNA replication
B. Identification of transformed cells
C. Protein synthesis
D. Cell division
Ecology
25. The ecological pyramid of biomass is inverted in:
A. Forest ecosystem
B. Grassland ecosystem
C. Pond ecosystem
D. Desert ecosystem
26. The largest biome on Earth is:
A. Tropical rainforest
B. Desert
C. Marine biome
D. Tundra
27. Which of the following is a keystone species?
A. Tiger
B. Sea otter
C. Cow
D. Goat
28. The maximum biodiversity is found in:
A. Polar regions
B. Temperate regions
C. Tropical rainforests
D. Grasslands
Q. No. | Ans | Q. No. | Ans | Q. No. | Ans | Q. No. | Ans |
1 | B | 8 | C | 15 | A | 22 | B |
2 | A | 9 | B | 16 | B | 23 | A |
3 | B | 10 | B | 17 | B | 24 | B |
4 | B | 11 | B | 18 | B | 25 | C |
5 | B | 12 | B | 19 | C | 26 | C |
6 | C | 13 | B | 20 | B | 27 | B |
7 | A | 14 | B | 21 | B | 28 | C |
ZOOLOGY (Questions 29–56)
Latest Odisha SSB Pattern | High Difficulty Level
Animal Cell Biology
29. The fluid mosaic model of plasma membrane was proposed by:
A. Watson and Crick
B. Singer and Nicolson
C. Schleiden and Schwann
D. Robert Hooke
30. Which organelle is responsible for intracellular digestion?
A. Ribosome
B. Golgi apparatus
C. Lysosome
D. Centrosome
31. The inner membrane of mitochondria is folded into:
A. Grana
B. Cristae
C. Thylakoids
D. Cisternae
32. The site of protein synthesis in animal cells is:
A. Lysosome
B. Golgi apparatus
C. Ribosome
D. Centriole
Human Physiology – Digestion & Respiration
33. Which enzyme is secreted in an inactive form as trypsinogen?
A. Pepsin
B. Amylase
C. Trypsin
D. Lipase
34. The functional unit of the lungs is:
A. Nephron
B. Alveolus
C. Bronchiole
D. Trachea
35. Carbon dioxide is transported mainly in the blood as:
A. Carbaminohaemoglobin
B. Dissolved CO₂
C. Bicarbonate ions
D. Carbonic acid
36. The respiratory centre is located in the:
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hypothalamus
Circulatory System
37. Which blood vessel carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery
B. Pulmonary vein
C. Aorta
D. Superior vena cava
38. The universal recipient blood group is:
A. O
B. A
C. AB
D. B
39. The lifespan of human red blood cells is approximately:
A. 90 days
B. 100 days
C. 120 days
D. 150 days
Excretion & Osmoregulation
40. Ultrafiltration in the nephron occurs in the:
A. Loop of Henle
B. Distal convoluted tubule
C. Glomerulus
D. Collecting duct
41. Antidiuretic hormone (ADH) is secreted from the:
A. Anterior pituitary
B. Posterior pituitary
C. Thyroid gland
D. Adrenal cortex
Nervous & Endocrine Systems
42. The neurotransmitter released at the neuromuscular junction is:
A. Dopamine
B. Acetylcholine
C. Serotonin
D. Adrenaline
43. Which endocrine gland is known as the "master gland"?
A. Thyroid
B. Adrenal
C. Pituitary
D. Pineal
Reproduction
44. The site of fertilization in humans is:
A. Ovary
B. Uterus
C. Ampulla of the fallopian tube
D. Cervix
45. Human sperm contains:
A. 46 chromosomes
B. 23 chromosomes
C. 44 chromosomes
D. 22 chromosomes
Genetics & Molecular Biology
46. The "one gene–one enzyme" hypothesis was proposed by:
A. Watson and Crick
B. Beadle and Tatum
C. Mendel
D. Morgan
47. DNA replication is:
A. Conservative
B. Semi-conservative
C. Dispersive
D. Random
48. Which RNA carries amino acids to the ribosome?
A. mRNA
B. rRNA
C. tRNA
D. snRNA
Evolution
49. The theory of natural selection was proposed by:
A. Lamarck
B. Hugo de Vries
C. Charles Darwin
D. Mendel
50. Homologous organs provide evidence for:
A. Convergent evolution
B. Divergent evolution
C. Mutation
D. Artificial selection
Biotechnology & Ecology
51. PCR was developed by:
A. Watson
B. Kary Mullis
C. Crick
D. Meselson
52. Restriction enzymes are used to:
A. Join DNA fragments
B. Cut DNA at specific sequences
C. Replicate DNA
D. Translate proteins
53. The 10% law of energy transfer was proposed by:
A. Odum
B. Lindeman
C. Elton
D. Tansley
54. Which ecosystem has the highest primary productivity?
A. Desert
B. Tropical rainforest
C. Grassland
D. Tundra
55. Ozone depletion is mainly caused by:
A. SO₂
B. NO₂
C. Chlorofluorocarbons (CFCs)
D. CO₂
56. Which of the following is an example of in situ conservation?
A. Botanical garden
B. Seed bank
C. National Park
D. Tissue culture
Q. No. | Ans | Q. No. | Ans | Q. No. | Ans | Q. No. | Ans |
29 | B | 36 | C | 43 | C | 50 | B |
30 | C | 37 | B | 44 | C | 51 | B |
31 | B | 38 | C | 45 | B | 52 | B |
32 | C | 39 | C | 46 | B | 53 | B |
33 | C | 40 | C | 47 | B | 54 | B |
34 | B | 41 | B | 48 | C | 55 | C |
35 | C | 42 | B | 49 | C | 56 | C |
CHEMISTRY (Questions 57–84)
Latest Odisha SSB Pattern | High Difficulty Level
Physical Chemistry
57. The SI unit of pressure is:
A. Atmosphere
B. Bar
C. Pascal
D. Torr
58. Which law states that the total pressure of a mixture of non-reacting gases is equal to the sum of the partial pressures of the individual gases?
A. Boyle's Law
B. Dalton's Law of Partial Pressures
C. Charles' Law
D. Graham's Law
59. The molarity of a solution containing 9.8 g H₂SO₄ (M = 98 g mol⁻¹) in 500 mL solution is:
A. 0.1 M
B. 0.2 M
C. 0.5 M
D. 1.0 M
60. Which process is endothermic?
A. Freezing of water
B. Condensation of steam
C. Sublimation of iodine
D. Neutralization reaction
61. The oxidation number of chromium in K₂Cr₂O₇ is:
A. +2
B. +3
C. +6
D. +7
62. Which of the following is a state function?
A. Heat
B. Work
C. Enthalpy
D. Path length
63. The catalyst used in the Haber process is:
A. Vanadium pentoxide
B. Iron
C. Nickel
D. Platinum
Inorganic Chemistry
64. Which of the following has the highest first ionization energy?
A. Lithium
B. Sodium
C. Potassium
D. Helium
65. The electronic configuration of Fe³⁺ (Z = 26) is:
A. [Ar] 3d⁵
B. [Ar] 3d⁶
C. [Ar] 3d⁷
D. [Ar] 4s²3d³
66. Which oxide is amphoteric?
A. Na₂O
B. CaO
C. Al₂O₃
D. SO₃
67. Brass is an alloy of:
A. Copper and Tin
B. Copper and Zinc
C. Iron and Carbon
D. Copper and Nickel
68. The ore of aluminium is:
A. Hematite
B. Magnetite
C. Bauxite
D. Cinnabar
69. Which gas is liberated when zinc reacts with dilute hydrochloric acid?
A. Oxygen
B. Chlorine
C. Hydrogen
D. Nitrogen
70. The bleaching action of chlorine is due to:
A. Reduction
B. Oxidation
C. Hydrolysis
D. Neutralization
Organic Chemistry
71. The IUPAC name of CH₃CH₂OH is:
A. Methanol
B. Ethanol
C. Propanol
D. Ethanal
72. Which hydrocarbon is aromatic?
A. Ethane
B. Cyclohexane
C. Benzene
D. Ethene
73. Which functional group is present in aldehydes?
A. –COOH
B. –CHO
C. –OH
D. –NH₂
74. Polymerization of ethene produces:
A. PVC
B. Polythene
C. Nylon-6
D. Bakelite
75. The monomer of natural rubber is:
A. Isoprene
B. Ethene
C. Styrene
D. Vinyl chloride
76. Which vitamin is water-soluble?
A. Vitamin A
B. Vitamin D
C. Vitamin C
D. Vitamin E
77. The major component of LPG is:
A. Methane
B. Propane and Butane
C. Ethane
D. Hydrogen
Environmental Chemistry
78. Acid rain is mainly caused by:
A. CO₂ and CH₄
B. SO₂ and NOₓ
C. O₂ and N₂
D. H₂ and CO
79. Which pollutant is responsible for the depletion of the ozone layer?
A. Carbon dioxide
B. Sulphur dioxide
C. Chlorofluorocarbons (CFCs)
D. Carbon monoxide
80. The pH of acid rain is generally:
A. Above 7
B. Exactly 7
C. Below 5.6
D. Around 8
Applied Chemistry
81. The chemical formula of baking soda is:
A. Na₂CO₃
B. NaHCO₃
C. CaCO₃
D. NaOH
82. Vinegar contains:
A. Oxalic acid
B. Citric acid
C. Acetic acid
D. Lactic acid
83. Which metal is used for galvanizing iron?
A. Tin
B. Copper
C. Zinc
D. Aluminium
84. Which gas is evolved during the reaction of dilute HCl with marble chips (CaCO₃)?
A. Hydrogen
B. Carbon dioxide
C. Oxygen
D. Chlorine
Q. No. | Ans | Q. No. | Ans | Q. No. | Ans | Q. No. | Ans |
57 | C | 64 | D | 71 | B | 78 | B |
58 | B | 65 | A | 72 | C | 79 | C |
59 | B | 66 | C | 73 | B | 80 | C |
60 | C | 67 | B | 74 | B | 81 | B |
61 | C | 68 | C | 75 | A | 82 | C |
62 | C | 69 | C | 76 | C | 83 | C |
63 | B | 70 | B | 77 | B | 84 | B |
PEDAGOGY & EVALUATION (Questions 85–100)
Latest Odisha SSB Pattern | High Difficulty Level
Educational Psychology
85. According to Jean Piaget, conservation of quantity is acquired during:
A. Sensorimotor Stage
B. Pre-operational Stage
C. Concrete Operational Stage
D. Formal Operational Stage
86. According to Lev Vygotsky, effective teaching should focus on:
A. Memorization of facts
B. Zone of Proximal Development (ZPD)
C. Individual differences only
D. Intelligence Quotient (IQ)
87. The theory of Operant Conditioning was proposed by:
A. Ivan Pavlov
B. Edward Thorndike
C. B.F. Skinner
D. Albert Bandura
88. According to Howard Gardner, linguistic intelligence refers to the ability to:
A. Solve mathematical problems
B. Understand and use language effectively
C. Understand nature
D. Create visual designs
Teaching–Learning Process
89. Which teaching method is most suitable for developing scientific inquiry and problem-solving skills?
A. Lecture Method
B. Demonstration Method
C. Inquiry Method
D. Storytelling Method
90. In the 5E Learning Model, the sequence after Explore is:
A. Evaluate
B. Explain
C. Elaborate
D. Engage
91. Which of the following is an example of formative assessment?
A. Annual Examination
B. Unit Test with Feedback
C. Board Examination
D. Entrance Examination
92. A teacher asks students to prepare a working model of the human heart. This mainly develops:
A. Rote Memorization
B. Psychomotor Skills
C. Mechanical Learning
D. Passive Learning
Assessment & Evaluation
93. A good achievement test should possess:
A. Reliability only
B. Validity only
C. Reliability, Validity and Objectivity
D. Difficult questions only
94. Which question type has the highest objectivity?
A. Essay
B. Short Answer
C. Multiple Choice Question
D. Long Answer
95. Bloom's revised taxonomy places "Evaluate" at which cognitive level?
A. Remember
B. Apply
C. Evaluate
D. Understand
96. Diagnostic evaluation is mainly used to:
A. Award grades
B. Identify learning difficulties
C. Promote students
D. Conduct final examinations
Inclusive Education & ICT
97. Inclusive education primarily aims to:
A. Separate children with disabilities
B. Provide equal learning opportunities for all learners
C. Teach only gifted children
D. Reduce classroom diversity
98. Which ICT tool is most useful for demonstrating complex biological processes such as mitosis?
A. Chalkboard only
B. Multimedia Animation
C. Printed Notes only
D. Flash Cards only
NEP 2020 & Professional Ethics
99. NEP 2020 emphasizes:
A. Rote learning
B. Competency-based and experiential learning
C. Only annual examinations
D. Teacher-centred instruction
100. A professionally competent science teacher should:
A. Encourage curiosity, experimentation and scientific attitude
B. Depend only on textbooks
C. Avoid laboratory activities
D. Discourage student questioning
Q. No. | Answer | Q. No. | Answer | Q. No. | Answer | Q. No. | Answer |
85 | C | 89 | C | 93 | C | 97 | B |
86 | B | 90 | B | 94 | C | 98 | B |
87 | C | 91 | B | 95 | C | 99 | B |
88 | B | 92 | B | 96 | B | 100 | A |