Discussion
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- Question
Sour taste of lemon is due to the presence of which of the following ?
Options- A. Citric acid
- B. Acetic acid
- C. Oxalic acid
- D. Formic acid
- Correct Answer
- Citric acid
- 1. Chemical properties of isotopes .............
Options- A. must be same
- B. must be different
- C. need not be same
- D. need not be different Discuss
- 2. Limestone is a raw material used by which industry?
Options- A. Aluminium
- B. Fertilizers
- C. Cement
- D. Petrochemicals Discuss
- 3. What is the name of the acid in grapes?
Options- A. Lactic acid
- B. Formic acid
- C. Acetic acid
- D. Tartaric acid Discuss
- 4. Magnesium oxide (MgO) + Water (H2O) = ?
Options- A. [Mg(OH)]
- B. [Mg(O2H)2]
- C. [Mg2(OH)]
- D. [Mg(OH)2] Discuss
- 5. The oceanic crust mainly consists of silica and __________.
Options- A. magnesium
- B. iron
- C. manganese
- D. sulphur Discuss
- 6. Glycol is used to manufacture which of the following ?
Options- A. Nylon
- B. Artificial silk
- C. Terylene
- D. Rubber Discuss
- 7. Which of the following green house gases has the greatest heat-trapping ability?
Options- A. Chlorofluoro carbon
- B. Methane
- C. Carbon dioxide
- D. Nitrous oxide Discuss
- 8. Iron and manganese present as pollutants in water cannot be removed by_____
Options- A. oxidation followed by settling and filtration
- B. chlorination
- C. ion exchange process
- D. lime soda process or manganese zeolite process Discuss
- 9. When iron rusts, its weight .....
Options- A. decreases
- B. increases
- C. remains the same
- D. first increases and then decreases Discuss
- 10. Metals react with sodium hydroxide to produce ___________.
Options- A. oxygen gas
- B. sodium
- C. water
- D. hydrogen gas Discuss
Chemistry problems
Search Results
Correct Answer: must be same
Correct Answer: Cement
Correct Answer: Tartaric acid
Correct Answer: [Mg(OH)2]
Correct Answer: magnesium
Correct Answer: Terylene
Correct Answer: Chlorofluoro carbon
Correct Answer: chlorination
Correct Answer: increases
Correct Answer: hydrogen gas
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