16. What two processes are carried out in oil refineries to modify the octane number of hydrocarbons?
17. When crude oil is heated and passed through a fractionating column, the different fractions separate out according to their
18. Which is the most undesirable component in kerosene ?
19.
Severity: Warning
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Filename: views/quiz-view.php
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Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
20.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
21.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
22.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
23.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
24.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
25.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
26.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
27.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
28.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
29.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
30.
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: views/quiz-view.php
Line Number: 138
Backtrace:
File: /home/objectiv/public_html/application/views/quiz-view.php
Line: 138
Function: _error_handler
File: /home/objectiv/public_html/application/controllers/Index.php
Line: 303
Function: view
File: /home/objectiv/public_html/index.php
Line: 294
Function: require_once
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