General Science problems
- 1. Quartz crystals normally used in quartz clocks etc. is chemically
Options- A. silicon dioxide
- B. germanium oxide
- C. a mixture of germanium oxide and silicon dioxide
- D. sodium silicate Discuss
Correct Answer: silicon dioxide
- 2. The chemical (ethyl mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
Options- A. bromine
- B. fluorine
- C. chlorine
- D. sulphur Discuss
Correct Answer: sulphur
- 3. The property of a substance to absorb moisture from the air on exposure is called
Options- A. osmosis
- B. deliquescence
- C. efflorescence
- D. desiccation Discuss
Correct Answer: deliquescence
- 4. Permanent hardness of water can be removed by adding
Options- A. chlorine
- B. washing soda
- C. potassium permanganate
- D. bleaching powder Discuss
Correct Answer: washing soda
- 5. Monazite is an ore of
Options- A. titanium
- B. zirconium
- C. iron
- D. thorium Discuss
Correct Answer: thorium
- 6. Which of the following is an element?
Options- A. Ruby
- B. Sapphire
- C. Emerald
- D. Diamond Discuss
Correct Answer: Diamond
- 7. The filament of an electric bulb is made of
Options- A. tungsten
- B. nichrome
- C. graphite
- D. iron Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: tungsten
- 8. Which of the following is used as a lubricant?
Options- A. Graphite
- B. Silica
- C. Iron Oxide
- D. Diamond Discuss
Correct Answer: Graphite
- 9. The gas usually filled in the electric bulb is
Options- A. nitrogen
- B. hydrogen
- C. carbon dioxide
- D. oxygen Discuss
Correct Answer: nitrogen
- 10. Non stick cooking utensils are coated with
Options- A. Teflon
- B. PVC
- C. black paint
- D. polystyrene Discuss
Correct Answer: Teflon
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