Class 10 Chemistry MCQs - Chapter 5
Chemical Industries Quiz Questions & Answers PDF Download - 7
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Chemical Industries Exam Questions and Answers PDF Download: Test 7
Which of the following is used as a lubricant for machines and engines?
- diesel
- lubricating oil
- fuel oil
- bitumen
Ore of lead is called
- galena
- zinc blende
- cinnabar
- chromite
Number of carbon atoms per molecule in LPG is
- 1 to 4
- 5 to 10
- 8 to 12
- 10 to 16
The last step of the Solvay process is
- preparation of ammonical brine
- carbonation
- preparation of carbon dioxide and slaked lime
- recovery of ammonia
The boiling point of LPG is
- below 20 °C
- 35 °C to 70 °C
- 70 °C to 120 °C
- 170 °C to 250 °C
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