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- Question
Temporary hardness is due to the presence of
Options- A. Calcium carbonate
- B. calcium bicarbonate
- C. magnesium sulphate
- D. calcium sulphate
- Correct Answer
- calcium bicarbonate
ExplanationTemporary hardness is due to the presence of soluble bicarbonates of calcium and magnesium in water. Permanent hardness is due to the presence of sulphates and chlorides of calcium and magnesium.
- 1. The mean surface temperature of the sun is estimated to be of the prder of
Options- A. 5500?C
- B. 4000?C
- C. 2000?C
- D. 1000?C Discuss
- 2. The Pyrenees mountains are located on the border between ____ and ____
Options- A. Romania, Bulgaria
- B. Norway, Sweden
- C. Hungary, Romania
- D. France, Spain Discuss
- 3. What is the relationship between resistivity r and conductivity s?
Options- A. R = s2
- B. R = s
- C. R > s
- D. R = 1/s Discuss
- 4. Which of the following is used as a lubricant?
Options- A. Graphite
- B. Silica
- C. Iron Oxide
- D. Diamond Discuss
- 5. Fenway Park is the home field of what Major League Baseball team?
Options- A. New York Yankees
- B. Chicago White Sox
- C. Montreal Expos
- D. Boston Red Sox Discuss
- 6. The religion of Afghanistan is
Options- A. Islam
- B. Buddhism
- C. Hinduism
- D. Christianity Discuss
- 7. Who was the first Indian woman to win a medal in the Olympics?
Options- A. P.T.Usha
- B. Karnam Malleshwari
- C. Kunjarani Devi
- D. Bachendri Pal Discuss
- 8. Who is known as 'Desert Fox'?
Options- A. Bismarck
- B. Eisenhower
- C. Gen. Rommel
- D. Walter Scott Discuss
- 9. The letters, "DOS" stand for...
Options- A. Data Out System
- B. Disk Out System
- C. Disk Operating System
- D. Data Operating System Discuss
- 10. Which of the following countries is not a member of SAARC?
Options- A. Nepal
- B. Bangladesh
- C. Afghanistan
- D. Myanmar Discuss
More questions
Correct Answer: 5500?C
Correct Answer: France, Spain
Correct Answer: R = 1/s
Correct Answer: Graphite
Correct Answer: Boston Red Sox
Correct Answer: Islam
Correct Answer: Karnam Malleshwari
Correct Answer: Gen. Rommel
Correct Answer: Disk Operating System
Correct Answer: Myanmar
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