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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. Which of these is not a computer?
Options- A. Aptiva
- B. Macintosh
- C. Acorn
- D. Paseo Discuss
- 2. On July 12, 1982, the ARDC was merged into
Options- A. RBI
- B. NABARD
- C. EXIM Bank
- D. None of the above Discuss
- 3. Outer covering of virus made up of protein is
Options- A. capsid
- B. coat
- C. virion
- D. viriod Discuss
- 4. What is part of a database that holds only one type of information?
Options- A. Report
- B. Field
- C. Record
- D. File Discuss
- 5. In which year did Milkha Singh win the first National title in the 400 m race?
Options- A. 1955
- B. 1956
- C. 1957
- D. 1970 Discuss
- 6. Bismillah Khan was associated with?
Options- A. Sarod
- B. Shehnai
- C. Flute
- D. Tabla Discuss
- 7. The light of distant stars is affected by
Options- A. the earth's atmosphere
- B. interstellar dust
- C. both (a) and (b)
- D. None of the above Discuss
- 8. The minor planets revolving between the orbits of Jupiter and Mars are called
Options- A. Novas
- B. Comets
- C. Meteors
- D. Asteroids Discuss
- 9. HTML is used to...
Options- A. Plot complicated graphs
- B. Author webpages
- C. Translate one language into another
- D. Solve equations Discuss
- 10. What is the Websites code for the country Mongolia?
Options- A. MN
- B. ML
- C. MG
- D. MO Discuss
More questions
Correct Answer: Paseo
Correct Answer: NABARD
Correct Answer: capsid
Correct Answer: Field
Correct Answer: 1957
Correct Answer: Shehnai
Correct Answer: both (a) and (b)
Correct Answer: Asteroids
Correct Answer: Author webpages
Correct Answer: MN
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