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- Question
Which of the following is applied on the top of the matchsticks?
Options- A. Red phosphorus
- B. White phosphorus
- C. Potassium sulphate
- D. No option is correct
- Correct Answer
- Red phosphorus
- 1. Which one of the following is a good electrical conductor?
Options- A. Graphite
- B. Diamond
- C. Peat
- D. Charcoal Discuss
- 2. What are Aldehydes ?
Options- A. Mild oxidising agents
- B. Strong oxidising agents
- C. Strong reducing agents
- D. Mild reducing agents Discuss
- 3. Cinnabar is an ore/mineral of
Options- A. Lead
- B. Manganese
- C. Molybdenum
- D. Mercury Discuss
- 4. _______ is an anaesthetic agent.
Options- A. Acetylene
- B. Glycol
- C. Diethylether
- D. Ethylene Discuss
- 5. Atomic number of which of the following elements is greater than that of Chlorine
Options- A. Potassium
- B. Sulphur
- C. Aluminium
- D. Phosphorus Discuss
- 6. Alcohol is more volatile than water because _________ is lower than water
Options- A. its boiling point
- B. its density
- C. its viscosity
- D. its surface tension Discuss
- 7. Which method will be employed to test the hardness of water?
Options- A. Boiling
- B. Distillation
- C. Formation of lather with soap
- D. None of these Discuss
- 8. Why is Carbon Monoxide a pollutant ?
Options- A. Reacts with haemoglobin
- B. Makes nervous system inactive
- C. It reacts with Oxygen
- D. It inhibits glycolysis Discuss
- 9. The most serious air pollutant causing health hazard is
Options- A. Sulphur dioxide
- B. Carbon monoxide
- C. Ozone
- D. Nitrogen oxide Discuss
- 10. Terylene is a condensation polymer of ethylene glycol and which acid?
Options- A. Benzoic Acid
- B. Salicylic acid
- C. Phthalic acid
- D. Terephthalic acid Discuss
Chemistry problems
Search Results
Correct Answer: Graphite
Correct Answer: Strong reducing agents
Correct Answer: Mercury
Correct Answer: Diethylether
Correct Answer: Potassium
Correct Answer: its boiling point
Correct Answer: Formation of lather with soap
Correct Answer: Reacts with haemoglobin
Correct Answer: Sulphur dioxide
Correct Answer: Terephthalic acid
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