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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

So, is the answer option 4?

Asked by bjayanta 15th May 2017, 3:09 PM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

what mass of iron is liberated from a solution of potassium iodide  when 1 litre of chlorine gas at 10 degree C and 750mm pressure is passed through it ?

Asked by komal 1st July 2016, 7:04 AM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

<div>a compound which contains one atom of X, two atoms of Y for each three atoms of Z is made by mixing 5g X, 1.15<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=a7f143a795e909e200e48ce3247d997b.png" alt="cross times" align="middle" />10<sup>23 atoms of Y and 0.03mol atoms of Z. if only 4.4g of the compound is produced in the process, calculate the atomic mass of Y given that atomic masses of X and Z are 60u and 80u respectively.&nbsp;</sup> <!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>EN-IN</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> 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Asked by debaratib24 28th June 2016, 9:17 PM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

Why SO3, SO2 & O2 does not obey the Law Of Reciprocal Proportions? Are these the only which does not obey this law?

Asked by bhawnanaman 6th April 2016, 9:30 AM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

plz solve it......

Asked by manali 11th December 2015, 10:51 AM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

Which element has convex meniscus? With diagram.

Asked by k.manju2007 10th September 2015, 12:52 PM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

WHAT IS MOLARITY

Asked by irfanfarooqui27 11th July 2015, 6:01 PM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

1 ml of gaseous aliphatic compound CnH3nOm is completely burnt in an excess of O2 and cooled to room temperature. The contraction in volume is 

A.   A   (1+1/2n-3/4m)

B.   B   (1+1/4n-1/4m)

C.   C   (1+3/4n-1/4m)

 D.  D   (1+3/4n-1/2m)

     please mention the steps used in finding the answer

P



Asked by Ashok Maheshwari 28th June 2015, 2:20 PM
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CBSE - XI Science - Chemistry - Some Basic Concepts of Chemistry

For 1.34 x 10 -3  moles of KBrO 3  to reduce into bromide 4.02 x 10 -3  mole of X n+  ion is needed.

Asked by Amyra B 12th June 2015, 8:42 AM
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