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<p><b><span style="font-size:22pt">Explaination 151: &nbsp;</span></b></p>

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	<p>
	The only SQL*Plus command in this list : DESCRIBE. It cannot be used as SQL command. <br>
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	  This command returns a description of tablename, including all columns in that table, the datatype for each column and an indication of whether the column permits storage of NULL values. <br>
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	<p>
	  Incorrect answer: <br>
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	<p>
	  A INSERT is not a SQL*PLUS command <br>
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	  B UPDATE is not a SQL*PLUS command <br>
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	  C SELECT is not a SQL*PLUS command <br>
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	  E DELETE is not a SQL*PLUS command <br>
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	  F RENAME is not a SQL*PLUS command <br>
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	  Refer : Introduction to Oracle9i : SQL, Oracle University Study Guide, 7
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