MCQ practice · SSC Chemistry Board questions · Chapter 2: States of Matter
What is the melting point of urea fertiliser?
Think it through first, then pick an option.
- a 100 °C
- b 115 °C
- c 119 °C
- d 133 °C
Answer and explanation
Correct answer: d 133 °C
Experiment 4: urea starts melting at 133°C and all of it melts at that temperature.
Why the other options are wrong
- a 100 °C: 100°C is the boiling point of water, not urea’s melting point.
- b 115 °C: 115°C is the melting point of sulfur, not of urea.
- c 119 °C: 119°C is not in the book; urea melts at 133°C.
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