JKSSB General Science MCQs

1. If the R.L. of canal bed level and high flood level of drainage are 208 meter and 215 meter respectively then cross drainage work will be:

A

Aqueduct

B

Super passage

C

Syphon aqueduct

D

Syphon

Civil JE Civil 28-08-2021 S3 REPORT ERROR
Correct Answer: B
Explanation:

Super passage

Correct Answered:

Wrong Answered:

2. In 2024, which spacecraft successfully retrieved lunar samples from the far side of the Moon?

A

Luna 25

B

Chang`e-6

C

Artemis I

D

Vikram Lander

Science - Space Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

China`s Chang`e-6 brought lunar samples from the far side of the Moon in 2024.

Correct Answered:

Wrong Answered:

3. Consider the following statement:

Assertion (A): An antibody is represented as H2L2.

Reason (R): An antibody has two heavy chains and two light chains.

Choose the correct options: 

A

Both (A) and (R) are true and (R) is the correct explanation of (A).

B

Both (A) and (R) are true but (R) is not the correct explanation of (A).

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

Antibody structure consists of 2 heavy and 2 light chains (H2L2).

Correct Answered:

Wrong Answered:

4. A complement component that is strongly chemotactic for neutrophils is:

A

C3

B

C3b

C

C5a

D

C5b

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

C5a acts as a strong chemotactic factor attracting neutrophils.

Correct Answered:

Wrong Answered:

5. Match the Antibody Types with their functions.

Column -A(Antibody Type)                                Column -B (Found in)

i. IgA                                                                        1. Blood and extracellular fluid 

ii. IgG                                                                       2. Surface of immature B cells 

iii. IgD                                                                      3. Basophils and mastocytes 

iv. IgE                                                                      4. Mucosal secretions like saliva, tears, and breast milk 

A

i-4, ii-1, iii-2, iv-3

B

i-3, ii-4, iii-1, iv-2

C

i-1, ii-4, iii-2, iv-3

D

i-2, ii-1, iii-4, iv-3

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

IgA -> Mucosal secretions, IgG > Blood, IgD > Immature B cells, IgE > Allergy & mast cells.

Correct Answered:

Wrong Answered:

6. B lymphocytes are involved in response to bacterial infection. Which of the following processes would typically be carried out?

I. Cell division by mitosis

II. Transcription producing mRNA

III. Engulfing and digesting bacteria

A

I and II only

B

III only

C

I and III only

D

I only

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

B lymphocytes divide and produce antibodies but do not engulf bacteria like phagocytes.

Correct Answered:

Wrong Answered:

7. In humans, what are MHCs called as ________?

A

HHC

B

HLA

C

HAT

D

HPFC

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

In humans, MHCs are known as HLA (Human Leukocyte Antigens).

Correct Answered:

Wrong Answered:

8. Select the correct statements regarding the receptors of the innate immune system:

I. They are included in the Toll family.

II. They include MHC complexes.

III. They recognize molecular patterns.

IV. They include scavenger receptors.

A

I, III, and IV

B

I and II

C

III and IV

D

II and IV

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

Innate receptors include Toll-like receptors, scavenger receptors, and recognize molecular patterns. MHC is adaptive.

Correct Answered:

Wrong Answered:

9. Which is the correct order of activities showcased by endogenous antigens?

A

i-iii-ii

B

iii-ii-i

C

ii-iii-i

D

iii-i-ii

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Endogenous antigen pathway: Peptide generated by proteolysis ? Transport to ER ? Binding to MHC I.

Correct Answered:

Wrong Answered:

10. Which of the following co-receptors recognizes the beta2 microglobulin subunit of class I MHCs?

A

CD24

B

CD4

C

CD8

D

CD16

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

CD8 co-receptor recognizes MHC class I molecules, interacting with beta2 microglobulin.

Correct Answered:

Wrong Answered:

11. Match the Cytokines with Their Functions.

A

i-4, ii-1, iii-2, iv-3

B

i-1, ii-2, iii-4, iv-3

C

i-3, ii-4, iii-1, iv-2

D

i-2, ii-3, iii-1, iv-4

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

IL-1 promotes inflammation and fever, IL-2 stimulates T-cell growth, IFN-? regulates immune responses, TNF-? plays a role in inflammation and apoptosis.

Correct Answered:

Wrong Answered:

12. What is the role of regulatory T cells in the immune system?

A

To activate B cells

B

To suppress immune responses

C

To produce antibodies

D

To enhance phagocytosis

Immunology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Regulatory T cells suppress immune responses to maintain immune tolerance and prevent autoimmunity.

Correct Answered:

Wrong Answered:

13. Choose the correct statement(s):

I. Genetic variation can only arise from sexual reproduction.

II. Organic variation is always beneficial.

III. Environmental factors have no effect on variation. IV. Some isolating mechanisms are pre-zygotic.

A

I and II are correct

B

I, II, III are correct

C

Only IV is correct

D

All are correct

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Pre-zygotic isolation is true, while other statements are false.

Correct Answered:

Wrong Answered:

14. Which of the following is the most famous example of industrial melanism?

A

Peppered moth

B

Darwin?s finches

C

Gal?pagos tortoises

D

Turtles

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

Industrial melanism is best demonstrated by Biston betularia (peppered moth).

Correct Answered:

Wrong Answered:

15. Match the theories with scientists:

A

i-1, ii-2, iii-3, iv-4

B

i-3, ii-4, iii-1, iv-2

C

i-2, ii-1, iii-4, iv-3

D

i-4, ii-3, iii-2, iv-1

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Inheritance of acquired characters ? Lamarck, Species concept ? Ernst Mayr, Natural selection ? Darwin, Modern synthesis ? Dobzhansky.

Correct Answered:

Wrong Answered:

16. Assertion (A): Stabilizing selection favours individuals with extreme phenotypes.

Reason (R): Stabilizing selection reduces diversity by selecting for the average phenotype.

A

Both Assertion and Reason are true, and Reason is the correct explanation.

B

Both Assertion and Reason are true, but Reason is not the correct explanation.

C

Assertion is false, Reason is true.

D

Assertion is true, Reason is false.

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Stabilizing selection favors average phenotypes, not extreme ones.

Correct Answered:

Wrong Answered:

17. The fossil of Java-Man was found in 1891 on banks of Solo River in Eastern Java by:

A

Davidson Black

B

Dubois

C

Leakey

D

Robert Broom

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Java Man (Homo erectus) was discovered by Eugene Dubois in 1891.

Correct Answered:

Wrong Answered:

18. The unit of evolution is the:

A

individual

B

social groups

C

population

D

species

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Population is the basic unit of evolution.

Correct Answered:

Wrong Answered:

19. Some of the oldest known fossils appear as stromatolites, formed by:

A

Marine invertebrates

B

Photosynthetic prokaryotes

C

Amoeba

D

Heterotrophic prokaryotes

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Stromatolites were formed by cyanobacteria (photosynthetic prokaryotes).

Correct Answered:

Wrong Answered:

20. Correct sequence of evolutionary events in allopatric speciation:

I. Geographical isolation

II. Ecological isolation

III. Pre-mating reproductive isolation

IV. Increased genetic divergence

V. Selection completed

A

III, IV, II, V

B

I, IV, II, V

C

II, III, IV, V

D

I, II, III, IV, V

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: D
Explanation:

Allopatric speciation sequence starts with geographical isolation followed by ecological isolation, reproductive isolation, divergence, and selection.

Correct Answered:

Wrong Answered:

21. Sibling species exhibit:

A

Only III is correct

B

I and II are correct

C

II, III and IV are correct

D

I, II, III and IV are correct

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Sibling species show morphological similarity, genetic identity, and reproductive isolation.

Correct Answered:

Wrong Answered:

22. Match the following:

A

i-3, ii-4, iii-1, iv-2

B

i-1, ii-3, iii-2, iv-4

C

i-4, ii-2, iii-1, iv-3

D

i-3, ii-4, iii-1, iv-2

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

Eohippus ? Dawn horse, Mesohippus ? Ancestor with 3 toes, Merychippus ? Grazing diet, Equus ? Modern horse.

Correct Answered:

Wrong Answered:

23. Choose the Correct Statements about Resting Membrane Potential.

A

Only I and II

B

Only III, IV

C

Only II, IV

D

All of the above

Biology - Nervous System Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: D
Explanation:

All four statements (I-IV) about resting potential are correct.

Correct Answered:

Wrong Answered:

24. Cholecystokinin, a hormone of digestive tract, stimulates release of:

A

Trypsin

B

Pepsin

C

Lipase

D

All of the above

Biology - Digestive System Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

CCK stimulates pancreatic lipase release and bile secretion.

Correct Answered:

Wrong Answered:

25. Assertion (A): Marine fishes excrete nitrogenous waste primarily as ammonia.

Reason (R): Marine fishes are hyperosmotic, leading to high water retention.

A

Both A and R are true, and R explains A.

B

Both A and R are true, but R does not explain A.

C

A is correct, R is incorrect.

D

A is incorrect, R is correct.

Biology - Excretion Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Marine fishes excrete urea/trimethylamine oxide, not ammonia; so A is wrong.

Correct Answered:

Wrong Answered:

26. Match the Photoreceptor Cells with Their Function.

A

i-4, ii-2, iii-1, iv-3

B

i-1, ii-3, iii-4, iv-2

C

i-2, ii-1, iii-3, iv-4

D

i-3, ii-4, iii-2, iv-1

Biology - Senses Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

Rods ? Dim light, Cones ? Bright light, Fovea ? Sharp vision, Optic nerve ? Transmits signals.

Correct Answered:

Wrong Answered:

27. Match Brain Regions with Their Function.

A

i-2, ii-1, iii-3, iv-4

B

i-1, ii-2, iii-3, iv-4

C

i-3, ii-2, iii-1, iv-4

D

i-2, ii-3, iii-4, iv-1

Biology - Nervous System Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Cerebrum ? Intelligence, Cerebellum ? Voluntary movement, Medulla ? Reflex, Hypothalamus ? Homeostasis.

Correct Answered:

Wrong Answered:

28. If loop of Henle were absent from nephron, what would be expected?

A

The urine will be more dilute

B

The urine will be more concentrated

C

There will be no urine formation

D

There will hardly be any change

Biology - Excretion Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

Loop of Henle concentrates urine; without it urine is more dilute.

Correct Answered:

Wrong Answered:

29. A high respiratory quotient indicates:

A

Absence of respiration

B

Aerobic respiration

C

Anaerobic respiration

D

Inhibition of respiration

Biology - Respiration Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

High RQ suggests carbohydrate metabolism and aerobic respiration.

Correct Answered:

Wrong Answered:

30. Which option indicates correct chronology of changes during nerve impulse transmission?

A

Depolarization ? Action potential ? Repolarization ? Na+ and K+ pump

B

Depolarization ? Action potential ? Na+ and K+ pump ? Repolarization

C

Depolarization ? Repolarization ? Action potential ? Na+ and K+ pump

D

Na+ and K+ pump ? Depolarization ? Repolarization

Biology - Nervous System Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

The correct sequence is depolarization, action potential, repolarization, and Na+/K+ pump.

Correct Answered:

Wrong Answered:

31. Partial pressure of oxygen in alveolar air is:

A

159 mm Hg

B

90 mm Hg

C

104 mm Hg

D

45 mm Hg

Biology - Respiration Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: C
Explanation:

The alveolar pO2 is approximately 104 mm Hg.

Correct Answered:

Wrong Answered:

32. Which of the following hormone helps in secretion of HCL from stomach?

A

Renin

B

Gastrin

C

Secretin

D

Pepsin

Biology - Human Physiology Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Gastrin stimulates secretion of gastric acid (HCl).

Correct Answered:

Wrong Answered:

33. Which of the following reptile orders includes lizards and snakes?

A

Crocodilia

B

Squamata

C

Testudines

D

Chelonia

Biology - Reptiles Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: B
Explanation:

Order Squamata includes snakes and lizards.

Correct Answered:

Wrong Answered:

34. Which of the following is considered an example of adaptive radiation in mammals?

A

I and III are correct

B

II and IV are correct

C

I, III, and IV are correct

D

II, III, and IV are correct

Biology - Evolution Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: D
Explanation:

Ungulates, marine mammals, and bats are classic adaptive radiation examples.

Correct Answered:

Wrong Answered:

35. Which of the following statements about parental care in amphibians is/are correct?

A

Statements I, II, and III are correct.

B

Statements I, II, and IV are correct.

C

Only statements I and II are correct.

D

Only statements II and IV are correct.

Biology - Amphibians Veterinary Pharmacist 2025 REPORT ERROR
Correct Answer: A
Explanation:

Parental care includes egg guarding, vocal sac tadpole carrying, and leaving eggs (frogs).

Correct Answered:

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