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- Question
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
- Correct Answer
- silicon dioxide
- 1. Sodium metal is kept under
Options- A. petrol
- B. alcohol
- C. water
- D. kerosene Discuss
- 2. Bell metal is an alloy of
Options- A. nickel and copper
- B. zinc and copper
- C. brass and nickel
- D. tin and copper Discuss
- 3. Which of the following metals remain in liquid for under normal conditions?
Options- A. Radium
- B. Zinc
- C. Uranium
- D. Mercury Discuss
- 4. Actinides are the elements with atomic numbers from
Options- A. 97 to 104
- B. 101 to 115
- C. 89 to 103
- D. 36 from 43 Discuss
- 5. Which of the following does not contain a coinage metal?
Options- A. Silver and Gold
- B. Zinc and Gold
- C. Copper and Silver
- D. Copper and Gold Discuss
- 6. 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
- 7. 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
- 8. Permanent hardness of water can be removed by adding
Options- A. chlorine
- B. washing soda
- C. potassium permanganate
- D. bleaching powder Discuss
- 9. Monazite is an ore of
Options- A. titanium
- B. zirconium
- C. iron
- D. thorium Discuss
- 10. Which of the following is an element?
Options- A. Ruby
- B. Sapphire
- C. Emerald
- D. Diamond Discuss
General Science problems
Search Results
Correct Answer: kerosene
Correct Answer: tin and copper
Correct Answer: Mercury
Correct Answer: 89 to 103
Correct Answer: Zinc and Gold
Correct Answer: sulphur
Correct Answer: deliquescence
Correct Answer: washing soda
Correct Answer: thorium
Correct Answer: Diamond
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