Class 10 Chemistry MCQs - Chapter 5

Chemical Industries Quiz Questions and Answers PDF - 7

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Chemical Industries Questions & Answers PDF Download: MCQ Quiz 7

MCQ 31: Which of the following is used as a lubricant for machines and engines?

A) diesel

B) lubricating oil

C) fuel oil

D) bitumen

MCQ 32: Ore of lead is called

A) galena

B) zinc blende

C) cinnabar

D) chromite

MCQ 33: Number of carbon atoms per molecule in LPG is

A) 1 to 4

B) 5 to 10

C) 8 to 12

D) 10 to 16

MCQ 34: The last step of the Solvay process is

A) preparation of ammonical brine

B) carbonation

C) preparation of carbon dioxide and slaked lime

D) recovery of ammonia

MCQ 35: The boiling point of LPG is

A) below 20 °C

B) 35 °C to 70 °C

C) 70 °C to 120 °C

D) 170 °C to 250 °C

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