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Home /Doubts and Solutions/CBSE/Class 11 Science/Chemistry/Some Basic Concepts Of Chemistry

Some Basic Concepts Of Chemistry Free Doubts and Solutions

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

What are the lessons necessary to prepare for final exam   

Asked by kumaran0553 14th March 2019, 10:06 PM
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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

Q) the vapour density of a mixture containing N O subscript 2 space & space N subscript 2 O subscript 4 space end subscript space i s space 38.3 space a t space 27 degree C space. space C a l c u l a t e space t h e space m o l e space o f space N O subscript 2 space i n space 100 g space m i x t u r e.

Asked by araima2001 28th November 2016, 10:08 AM
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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

a compound which contains one atom of X, two atoms of Y for each three atoms of Z is made by mixing 5g X, 1.15cross times1023 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. 

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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