SSC GD General Science Part 2, 2026

General Science

1. Clouds float in the atmosphere due to their low:

• A) Temperature
• B) Velocity
• C) Pressure
• D) Density

D) Density

2. What is the horizontal heat transfer process in the atmosphere called?

• A) Advection
• B) Convection
• C) Conduction
• D) Radiation

A) Advection (Abhivan)

3. Which element has the highest ionization energy based on periodic trends?

• A) Hydrogen
• B) Helium
• C) Lithium
• D) Neon

B) Helium

4. What percentage of human blood volume consists of plasma?

• A) 45%
• B) 50%
• C) 55%
• D) 60%

C) 55%

5. Tuberculosis (TB) is caused by which type of organism?

• A) Virus
• B) Bacteria
• C) Protozoa
• D) Fungus

B) Bacteria

6. Kala-azar fever is transmitted by the bite of:

• A) Housefly
• B) Tsetse fly
• C) Sandfly (Sikta makkhi)
• D) Mosquito

C) Sandfly (Sikta makkhi)

7. When iron rusts, its total weight:

• A) Increases
• B) Decreases
• C) Remains the same
• D) Becomes zero

A) Increases

8. Which chemical compound is naturally dissolved in human tears?

• A) Common Salt (NaCl)
• B) Potassium Sulfate
• C) Calcium Chloride
• D) Sodium Carbonate

A) Common Salt (NaCl)

9. Which gas is used for the artificial ripening of green fruits?

• A) Ethane
• B) Acetylene / Ethylene
• C) Carbon Dioxide
• D) Methane

B) Acetylene / Ethylene

10. Who discovered Insulin?

• A) Frederick Banting
• B) Gerhard Domagk
• C) Ronald Ross
• D) William Harvey

A) Frederick Banting

11. Which of the following natural processes does NOT pollute the air?

• A) Burning of wood
• B) Photosynthesis
• C) Volcanic eruption
• D) Chemical insecticides

B) Photosynthesis

12. The observable physical characteristics of an individual (like height, eye color) are called:

• A) Genotype
• B) Phenotype
• C) Pedigree
• D) Mutation

B) Phenotype

13. A galvanometer is used to detect the presence of:

• A) Electric current
• B) Magnetic field
• C) Sound waves
• D) Heat

A) Electric current

14. Light waves are transverse waves because they can be:

• A) Reflected
• B) Refracted
• C) Diffracted
• D) Polarized

D) Polarized

15. Which enzyme is produced by the salivary glands in the mouth?

• A) Pepsin
• B) Trypsin
• C) Ptyalin
• D) Lipase

C) Ptyalin

16. Vegetable oils are converted into solid fat ghee through the process of:

• A) Heat treatment
• B) Hydrogenation
• C) Oxidation
• D) Enzyme treatment

B) Hydrogenation

17. Which of the following is an alloy?

• A) Zinc
• B) Steel
• C) Lead
• D) Aluminum

B) Steel

18. Which gas is the most abundant and important component of Biogas?

• A) Methane
• B) Butane
• C) Propane
• D) Ethane

A) Methane

19. Which substance is used inside fire extinguishers to release carbon dioxide?

• A) Washing soda
• B) Baking Soda
• C) Bleaching powder
• D) Slaked lime

B) Baking Soda