SCORE MAXIMUM MARKS FROM PRACTICAL PART IN CHEMISTRY -II PUC EXAMINATION-2011

Dear students ,
We think you might have finished your practical examinations by this time successfully.Theory paper also contains questions from practical part for ten marks. No one should lose marks in this part . To score ten marks in part d-2, first get ready to answer two questions. you can be selective . this part has three questions of five marks each.  Out of which you have to answer two questions.
therefore you must read
1) both  preparations (3M)
2) test for carbohydrates and proteins (2M)
3) all the three titration (5M)
4) Another question will be from kinetics experiments – that you can leave.
scoring marks in practical is easier than theory. Five-page reading in practical procedure gets a definite 10 marks in final examination theory paper (part d-2). so don’t loose marks in this part.

QUESTIONS ON PRACTICAL PART FOR TEN MARKS     (very ,. Imp.)

1. How is m-dinitro benzene prepared from nitro benzene?—3M

2. How is p- bromoacetanilide prepared from acetanilide?—3M

3. Explain   a) Molisch test(general testfor carbohydrate )   b) Benedicts test (test for a reducing sugar) c)Seliwanoff’s test (test for aldose and ketose)  d)Acrolin test e)Biuret test(general test for proteins)  f)xanthoprotic acid test  g)Millon test(test for proteins which contains benzene ring)—2M

4. Estimate the mass of KMnO4 present in one liter  of given solution using standard oxalic acid solution . —-5M

5. Estimate the mass of KMnO4 present in one liter  of given solution using standard ferrous ammonium sulphate  solution . —-5M

6. Estimate the mass of    ferrous ammonium sulphate  solution present in one liter  of given solution using standard K2Cr2O7 solution . —-5M

Advertisements
Post a comment or leave a trackback: Trackback URL.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: