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- Question
Which one of the following types of laser is used in laser printers?
Options- A. Semiconductor laser
- B. Dye laser
- C. Gas laser
- D. Excimer laser
- Correct Answer
- Semiconductor laser
- 1. Which of the following plants is not capable of manufacturing own food?
Options- A. Algae
- B. Mushroom
- C. Carrot
- D. Cabbage Discuss
- 2. Which is the largest satellite in the solar system? Discuss
- 3. When a gas is turned into a liquid, the process is called
Options- A. condensation
- B. evaporation
- C. deposition
- D. sublimation Discuss
- 4. The gases used in different types of welding would include
Options- A. oxygen and hydrogen
- B. oxygen and acetylene
- C. oxygen, acetylene and argon
- D. oxygen, hydrogen, acetylene and nitrogen Discuss
- 5. The radioactive element most commonly detected in humans is
Options- A. potassium-40
- B. cobalt-60
- C. iodine-131
- D. plutonium-238 Discuss
- 6. What happens when some charge is placed on a soap bubble?
Options- A. Its radius decreases
- B. Its radius increases
- C. The bubble Collapses
- D. The bubble expands Discuss
- 7. The filament of an electric bulb is made of
Options- A. tungsten
- B. nichrome
- C. graphite
- D. iron Discuss
- 8. What is the scientific name for washing soda?
Options- A. Sodium carbonate
- B. Sodium bicarbonate
- C. Calcium carbonate
- D. Calcium bicarbonate Discuss
- 9. If a tropical rain forest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because
Options- A. The soil of rain forest is deficient in nutrients
- B. Propagules of the trees in a rain forest have poor viability
- C. The rain forest species are slow growing
- D. Exotic species invade the fertile soil of rain forest Discuss
- 10. The uranium fuel used worldwide is mainly in the form of
Options- A. U3O8
- B. UO2
- C. UF6
- D. U metal Discuss
General Science problems
Search Results
Correct Answer: Mushroom
Correct Answer: Ganymede , satellite of Jupiter
Correct Answer: condensation
Correct Answer: oxygen and acetylene
Correct Answer: potassium-40
Correct Answer: Its radius increases
Correct Answer: tungsten
Correct Answer: Sodium carbonate
Correct Answer: The soil of rain forest is deficient in nutrients
Correct Answer: UO2
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