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NEET PCB PRACTICE TEST 100 MCQS QUIZ

RAVI MATHS TUITION CENTER 0
June July Portion – 5 Theory MCQ Tests

June–July Portion Combined Test

5 Theory MCQ Tests × 20 Questions = 100 Questions

Correct answers appear directly under each question after submission.

Test 1 – Theory MCQs

1. Physics primarily deals with the study of:
Correct Answer: C) Nature and natural phenomena
2. Which of the following is a fundamental SI unit rather than a derived unit?
Correct Answer: C) Kilogram
3. The best way to reduce random errors in an experiment is to:
Correct Answer: B) Repeat observations and take the mean
4. Mass of an object:
Correct Answer: C) Is a basic property of matter
5. Niels Bohr's atomic theory was based on the:
Correct Answer: B) Quantum theory of hydrogen atom
6. Lightning is historically associated with the experiments of:
Correct Answer: B) Franklin
7. When two vectors are perpendicular, their dot product is:
Correct Answer: C) Zero
8. A vector can theoretically be split into:
Correct Answer: D) Any number of components
9. In uniform circular motion:
Correct Answer: B) Speed remains constant
10. When a stone moving in a circle is released from its string, it initially moves:
Correct Answer: C) Tangentially
11. Friction that acts up to the maximum value before a body begins to move is called:
Correct Answer: B) Limiting friction
12. Which statement about rolling friction is correct?
Correct Answer: A) It is generally smaller than sliding friction
13. The coefficient of sliding friction is:
Correct Answer: C) Dimensionless
14. Newton's second law implies that a body accelerates when:
Correct Answer: B) A net force acts
15. Which phenomenon is NOT explained as an action-reaction pair under Newton's third law?
Correct Answer: D) A thrown body returning due to gravity
16. No real body is perfectly rigid because real bodies:
Correct Answer: B) Deform under forces
17. In circular motion, work done by the centripetal force is zero because the force is:
Correct Answer: C) Perpendicular to displacement
18. During an inelastic collision of an isolated system, which quantity is always conserved?
Correct Answer: B) Total linear momentum
19. Momentum is most directly related to:
Correct Answer: A) Impulse
20. For two equal-mass spheres in a glancing elastic collision, with one initially at rest, their final directions are:
Correct Answer: C) At right angles

Test 2 – Theory MCQs

1. A taxon that includes related families is:
Correct Answer: A) Order
2. Biological names are generally:
Correct Answer: C) Binomial and universal
3. A taxonomic category refers to:
Correct Answer: A) A rank in taxonomic hierarchy
4. A pair of contrasting characters used in a taxonomic key is called a:
Correct Answer: B) Couplet
5. In a biological name, the first word represents the:
Correct Answer: C) Genus
6. In printed scientific nomenclature, biological names are generally:
Correct Answer: B) Italicized
7. When handwritten, the two words of a biological name should be:
Correct Answer: B) Underlined separately
8. The generic name in binomial nomenclature begins with a:
Correct Answer: B) Capital letter
9. The specific epithet normally begins with a:
Correct Answer: B) Small letter
10. The term 'taxon' can refer to:
Correct Answer: C) Any rank in a taxonomic hierarchy
11. The plant equivalent of the animal taxonomic rank 'phylum' is:
Correct Answer: B) Division
12. A herbarium sheet normally does NOT record the:
Correct Answer: D) Height of the entire plant
13. Classification is useful because it:
Correct Answer: B) Groups organisms into categories for systematic study
14. Each individual statement in a taxonomic key is called a:
Correct Answer: A) Lead
15. The third name in trinomial nomenclature commonly represents a:
Correct Answer: C) Subspecies
16. The suffix '-oideae' is used for a plant:
Correct Answer: B) Subfamily
17. Species are considered dynamic groups because they:
Correct Answer: B) May change over time through variation
18. Biological museums commonly preserve specimens for:
Correct Answer: A) Study and reference
19. Insects in biological museums are commonly preserved after:
Correct Answer: B) Collecting, killing and pinning
20. Museums may contain collections of:
Correct Answer: C) Animal skeletons

Test 3 – Theory MCQs

1. Mycoplasmas are classified under kingdom:
Correct Answer: A) Monera
2. Viruses outside a living cell can occur as:
Correct Answer: B) Inert crystalline structures
3. Viruses are best described as:
Correct Answer: B) Non-cellular infectious entities
4. Cyanobacteria belong to kingdom:
Correct Answer: A) Monera
5. Mycorrhiza is an association between:
Correct Answer: A) Fungi and roots of higher plants
6. Lichens represent a symbiotic association between:
Correct Answer: A) Algae and fungi
7. Citric acid is commercially produced using:
Correct Answer: A) Aspergillus niger
8. Yeast is:
Correct Answer: B) A unicellular fungus
9. Fungal cell walls commonly contain:
Correct Answer: B) Chitin and polysaccharides
10. In Paramecium, genetic information involved in reproduction is associated mainly with the:
Correct Answer: A) Micronucleus
11. Fimbriae in some bacteria help in:
Correct Answer: B) Attachment to surfaces or host tissues
12. Phylogeny refers to the:
Correct Answer: B) Evolutionary history
13. Peat moss is:
Correct Answer: A) Sphagnum
14. Dense mats of mosses help prevent:
Correct Answer: B) Soil erosion
15. Artificial systems of plant classification are limited because vegetative characters are often:
Correct Answer: B) Affected by environment
16. In gymnosperms, endosperm is formed:
Correct Answer: B) Before fertilization as female gametophyte tissue
17. A cup-shaped chloroplast is characteristic of:
Correct Answer: B) Chlamydomonas
18. The deepest-growing marine algae are generally:
Correct Answer: B) Red algae
19. The main plant body of pteridophytes is the:
Correct Answer: B) Sporophyte differentiated into roots, stem and leaves
20. Heterospory is found in:
Correct Answer: A) Selaginella and Salvinia

Test 4 – Theory MCQs

1. A concentration unit that does not change with temperature is:
Correct Answer: C) Molality
2. The law of multiple proportions deals with:
Correct Answer: A) Simple whole-number ratios of masses of one element combining with a fixed mass of another
3. According to Bohr's model, the energy of an electron orbit generally becomes less negative as:
Correct Answer: A) n increases
4. The Heisenberg uncertainty principle relates uncertainties in:
Correct Answer: A) Position and momentum
5. The visible region is:
Correct Answer: B) A small portion of the electromagnetic spectrum detectable by human eyes
6. For transition elements, the differentiating electron generally enters the:
Correct Answer: A) (n-1)d subshell
7. Across a period from left to right, metallic character generally:
Correct Answer: B) Decreases
8. Down a group, the basic character of metallic oxides generally:
Correct Answer: B) Increases
9. The modern periodic law relates properties of elements to their:
Correct Answer: B) Atomic numbers
10. Compared with metallic elements, non-metallic elements are:
Correct Answer: B) Generally fewer in number
11. An alkali metal has a characteristic outer electronic configuration of:
Correct Answer: A) ns¹
12. Halogens typically have the outer configuration:
Correct Answer: B) ns²np⁵
13. The number of significant figures in a calculated multiplication result is limited by the factor with:
Correct Answer: B) The fewest significant figures
14. A mole is used primarily to express:
Correct Answer: B) Amount of substance
15. Avogadro's concept is useful because chemical samples contain:
Correct Answer: B) Extremely large numbers of atoms or molecules
16. During electrolysis, electric charge is associated with the transfer of:
Correct Answer: A) Electrons
17. An alpha particle is essentially a:
Correct Answer: B) Helium nucleus
18. The carbon family belongs to periodic table group:
Correct Answer: C) 14
19. The energy of a photon is proportional to its:
Correct Answer: A) Frequency
20. In the photoelectric effect, the minimum frequency needed for electron emission is called the:
Correct Answer: B) Threshold frequency

Test 5 – Theory MCQs

1. A rigid body is ideally defined as one in which distances between constituent particles:
Correct Answer: B) Remain unchanged
2. Static friction is called a self-adjusting force because it:
Correct Answer: B) Adjusts up to a limiting value to oppose impending motion
3. The limiting friction is experimentally found to depend on the:
Correct Answer: A) Normal reaction
4. The coefficient of friction is a ratio of:
Correct Answer: A) Two forces
5. In an isolated collision, conservation of linear momentum follows because:
Correct Answer: A) External net force is absent
6. An elastic collision differs from an inelastic collision because in an elastic collision:
Correct Answer: B) Total kinetic energy is conserved
7. A taxonomic key identifies organisms mainly using:
Correct Answer: A) Contrasting characters
8. Scientific names are universal primarily because they:
Correct Answer: A) Avoid dependence on local common names
9. A species is commonly recognized as a group of organisms sharing:
Correct Answer: A) Fundamental similarities
10. Specific epithets such as indica, leo and tuberosum represent the:
Correct Answer: B) Second component of a biological name
11. The F-factor of bacteria is:
Correct Answer: A) A self-replicating DNA element associated with fertility
12. The bacterial sex pilus assists in:
Correct Answer: A) Cell-to-cell contact and genetic transfer
13. Mycoplasma is notable for:
Correct Answer: B) Lacking a conventional cell wall
14. Red algae generally reproduce sexually using:
Correct Answer: B) Non-motile gametes
15. Heterospory means production of:
Correct Answer: B) Two different types/sizes of spores
16. Heterospory is evolutionarily important because it is associated with the origin of:
Correct Answer: A) Seed habit
17. Methanogens are important in the production of:
Correct Answer: A) Biogas
18. A haplontic life cycle is common in:
Correct Answer: A) Many algae
19. Natural classification differs from a simple artificial system because it considers:
Correct Answer: A) A larger set of meaningful characters
20. The fundamental purpose of biological classification is to:
Correct Answer: A) Organize diversity for systematic study
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