JKSSB GENERAL SCIENCE MOCK TEST – 4
(Latest JKSSB Pattern | Moderate to High Level)
Time: 20 Minutes
Maximum Marks: 20
1. A body weighs 980 N on Earth. Assuming the acceleration due to gravity on the Moon is one-sixth of that on Earth, what will be its weight on the Moon?
A) 980 N
B) 490 N
C) 163.3 N
D) 98 N
2. Match the following Scientists with their Contributions.
| Scientist | Contribution |
|---|---|
| i. Isaac Newton | a. Cell discovery |
| ii. Robert Hooke | b. Law of Gravitation |
| iii. Gregor Mendel | c. Father of Genetics |
| iv. Carolus Linnaeus | d. Binomial Nomenclature |
Choose the correct option.
A) i-b, ii-a, iii-c, iv-d
B) i-a, ii-b, iii-c, iv-d
C) i-b, ii-c, iii-a, iv-d
D) i-d, ii-a, iii-b, iv-c
3. Which of the following statements regarding biomass energy are correct?
I. It is a renewable source of energy.
II. Biogas mainly contains methane.
III. Gobar gas plants reduce environmental pollution.
A) Only I
B) Only II
C) Only I and II
D) I, II and III
4. Which of the following energy sources depends directly on the gravitational pull of the Moon?
A) Wind energy
B) Solar energy
C) Tidal energy
D) Geothermal energy
5. Which of the following substances is an alloy?
A) Copper
B) Brass
C) Iron
D) Aluminium
6. Which of the following statements are correct?
I. Copper is less reactive than zinc.
II. Iron is more reactive than copper.
III. Silver is more reactive than sodium.
IV. Gold is among the least reactive metals.
A) Only I and II
B) Only I, II and IV
C) Only II and III
D) I, II, III and IV
7. Which of the following metals reacts with steam but not with cold water?
A) Sodium
B) Potassium
C) Iron
D) Calcium
8. Which gas is evolved when dilute hydrochloric acid reacts with magnesium?
A) Oxygen
B) Carbon dioxide
C) Hydrogen
D) Chlorine
9. Which ore is correctly matched with its principal metal?
A) Bauxite — Aluminium
B) Galena — Zinc
C) Cinnabar — Iron
D) Hematite — Copper
10. Which of the following methods is commonly used for refining copper?
A) Distillation
B) Electrolytic refining
C) Roasting
D) Calcination
11. Which of the following statements are correct regarding respiration?
I. Respiration releases energy from food.
II. Oxygen is essential for aerobic respiration.
III. Carbon dioxide is released during aerobic respiration.
IV. Mitochondria are called the powerhouse of the cell.
A) Only I and II
B) Only II, III and IV
C) Only I, II and III
D) I, II, III and IV
12. Which blood vessel carries deoxygenated blood from the heart to the lungs?
A) Pulmonary artery
B) Pulmonary vein
C) Aorta
D) Vena cava
13. Which part of the nephron performs ultrafiltration of blood?
A) Loop of Henle
B) Collecting duct
C) Glomerulus
D) Ureter
14. Which pollutant is primarily responsible for acid rain?
A) Oxygen
B) Nitrogen
C) Sulphur dioxide
D) Hydrogen
15. Which organisms recycle nutrients back into the ecosystem?
A) Producers
B) Consumers
C) Decomposers
D) Herbivores
16. Which of the following is NOT a greenhouse gas?
A) Carbon dioxide
B) Methane
C) Nitrous oxide
D) Nitrogen
17. Which of the following statements regarding Mendel's laws are correct?
I. Law of Dominance explains why only one trait appears in the F₁ generation.
II. Law of Segregation states that alleles separate during gamete formation.
III. Law of Independent Assortment applies to genes inherited independently.
A) Only I
B) Only I and II
C) Only II and III
D) I, II and III
18. Match the following.
| Organism | Group |
|---|---|
| i. Hydra | a. Arthropoda |
| ii. Earthworm | b. Annelida |
| iii. Cockroach | c. Cnidaria |
| iv. Starfish | d. Echinodermata |
Choose the correct option.
A) i-c, ii-b, iii-a, iv-d
B) i-b, ii-c, iii-a, iv-d
C) i-c, ii-a, iii-b, iv-d
D) i-d, ii-b, iii-a, iv-c
19. Which of the following plants belongs to Gymnosperms?
A) Mango
B) Pine
C) Wheat
D) Mustard
20. Which of the following statements regarding birds and mammals are correct?
I. Both are warm-blooded animals.
II. Both possess four-chambered hearts.
III. Birds possess feathers.
IV. Mammals possess mammary glands.
A) Only I and II
B) Only II and III
C) Only I, III and IV
D) I, II, III and IV
ANSWER KEY
| Q. No. | Answer |
|---|---|
| 1 | C |
| 2 | A |
| 3 | D |
| 4 | C |
| 5 | B |
| 6 | B |
| 7 | C |
| 8 | C |
| 9 | A |
| 10 | B |
| 11 | D |
| 12 | A |
| 13 | C |
| 14 | C |
| 15 | C |
| 16 | D |
| 17 | D |
| 18 | A |
| 19 | B |
| 20 | D |