Discussion
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- Question
Terylene is a condensation polymer of ethylene glycol and which acid?
Options- A. Benzoic Acid
- B. Salicylic acid
- C. Phthalic acid
- D. Terephthalic acid
- Correct Answer
- Terephthalic acid
- 1. The most serious air pollutant causing health hazard is
Options- A. Sulphur dioxide
- B. Carbon monoxide
- C. Ozone
- D. Nitrogen oxide Discuss
- 2. 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
- 3. 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
- 4. 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
- 5. 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 Discuss
- 6. Atomic explosion is triggered by
Options- A. thermo nuclear reaction
- B. chemical reaction
- C. controlled chain reaction
- D. uncontrolled chain reaction Discuss
- 7. Which of the following is used as non stick coating for cooking utensils?
Options- A. Perspex
- B. Styrofoam
- C. Polystyrene
- D. Teflon Discuss
- 8. Crystallisation is an example of?
Options- A. Physical Change
- B. Chemical Change
- C. Chemical Reaction
- D. Galvanisation Discuss
- 9. Vinegar and Baking Soda together produce ____________.
Options- A. Copper
- B. Carbon Dioxide
- C. Copper Sulphate
- D. Magnesium Oxide Discuss
- 10. The salt concentration (measured as salinity in parts per thousand), is _______ % in sea.
Options- A. 10-20
- B. 30-35
- C. 40-50
- D. 60-70 Discuss
Chemistry problems
Search Results
Correct Answer: Sulphur dioxide
Correct Answer: Reacts with haemoglobin
Correct Answer: Formation of lather with soap
Correct Answer: its boiling point
Correct Answer: Red phosphorus
Correct Answer: uncontrolled chain reaction
Correct Answer: Teflon
Correct Answer: Physical Change
Correct Answer: Carbon Dioxide
Correct Answer: 30-35
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