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- Question
The main constituents of pearls are
Options- A. calcium oxide and ammonium chloride
- B. calcium carbonate and magnesium carbonate
- C. aragonite and conchiolin
- D. ammonium sulphate and sodium carbonate
- Correct Answer
- calcium carbonate and magnesium carbonate
- 1. Which metal pollute the air of a big city?
Options- A. Copper
- B. Chromium
- C. Lead
- D. Cadmium Discuss
- 2. Potassium Permanganate is used for purifying drinking water, because
Options- A. it is a sterilising agent
- B. it dissolves the impurities of water
- C. it is a reducing agent
- D. it is an oxidising agent Discuss
- 3. LPG consists of mainly
Options- A. methane, ethane and hexane
- B. ethane, hexane and nonane
- C. methane, hexane and nonane
- D. methane, butane and propane Discuss
- 4. Amalgams are
Options- A. highly coloured alloys
- B. alloys which contain mercury as one of the contents
- C. alloys which have great resistance to abrasion
- D. alloys which contain carbon Discuss
- 5. Which of the following are the ingredients of gun metal?
Options- A. Iron, Zinc, Titanium
- B. Iron, tin
- C. Iron, Brass, Tin
- D. Copper, Tin Discuss
- 6. 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
- 7. 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
- 8. Which of the following metals remain in liquid for under normal conditions?
Options- A. Radium
- B. Zinc
- C. Uranium
- D. Mercury Discuss
- 9. Bell metal is an alloy of
Options- A. nickel and copper
- B. zinc and copper
- C. brass and nickel
- D. tin and copper Discuss
- 10. Sodium metal is kept under
Options- A. petrol
- B. alcohol
- C. water
- D. kerosene Discuss
General Science problems
Search Results
Correct Answer: Lead
Correct Answer: it is an oxidising agent
Correct Answer: methane, butane and propane
Correct Answer: alloys which contain mercury as one of the contents
Correct Answer: Copper, Tin
Correct Answer: Zinc and Gold
Correct Answer: 89 to 103
Correct Answer: Mercury
Correct Answer: tin and copper
Correct Answer: kerosene
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