chem p12...hmm that was a tough one !!!

[sweetiepie]

@ mr paudel oh gr8...

 

[grumpy]

yaro i need help q 36 of may june 08.
i still dont understand why the nitrogen is not considered to be oxidised.
similar question came in the todays paper.36 When the yellow liquid NCl3 is stirred into aqueous sodium hydroxide, the reaction that occurs
can be represented by the following equation.
2NCl3(l) + 6NaOH(aq) → N2(g) + 3NaCl (aq) + 3NaOCl (aq) + 3H2O(l)
What will be the result of this reaction?
1 The nitrogen is oxidised.
2 A bleaching solution remains after the reaction.
3 The final solution gives a precipitate with acidified silver nitrate.

 

[lychee26]

Could you please post it here.

 

[BILALrox01]

A is the answer. and Nitrogen has been reduced.. its oxidation state was +3 and is zero now.

 

[sadabrahman]

Chemistry ne maar daala

 

[rocker]

hey guys what was the answer for one with change in number of chiral with kmno4?

 

[onepersonaway]

hey guys what was the answer for one with change in number of chiral with kmno4?

It was Most probably +2 and -1

 

[grumpy]

i wrote +2 and 0

 

[alphabravocharlie]

i wrote +2 and 0

Me too.

 

[Gooners]

Guys wat was the answer to:
1) hw many iaomers fr c5h10 fr pie bond?
2) hw many chiral centers remaining after the K2Cr2O7 was aded .....
Probably the Q on the last page Q 38 ^^^^
3)last question... Dnt remembr
4) what had same Electronegativity as Al?
5)wat was the graph fr PH values of those oxides
6) and the Q asked above ie whether Nitrogen was redoxed?
Looking fwrd twrds answers........ 8)

 

[grumpy]

yaro ans discuss karo.
1 6 but i wrote 5 }
2 see above
3 d
4 al4c3
5 b
6 a actuallt it was c

 

[sniper7137]

i wrote +2 and 0

Me too.

Me too.

 

[veiled_fantasy]

Wasn't the answer to the isomer question six?

C5H10

Compounds with 1 unsaturated bond and no ring:
1-pentene
cis-2-pentene
trans-2-pentene
2-methyl-1-butene
2-methyl-2-butene
3-methyl-1-butene
http://www.chem.ucalgary.ca/courses/350/exams/3513/351f98/351mt98sd.gif

 

[oohlala]

i wrote +2 and 0

Me too.

Me too.

Me three

 

[oohlala]

you know, time wasnt enough!! nd i had to guess a few qns! thats soo bad

 

[intel1993]

i wrote +2 and 0

Me too.

Me tooo

 

[beststriker]

i choose C for the 40th question (the one with calcium and ethanoic acid), wht abt u guyz.....& what abt the ionisation energy mcq..It was group 1 elements na???

 

[Aloo007]

Ye it was group 1 metals but dude i think i made the same mistake as you in the last question i think it said which molecoule doesnot give the salt I answered C because i thought i said which molecoules give a salt with ca

 

[intel1993]

yea the answere was C...................n yea it was grup 1 elemnts

 

[Gooners]

yaro ans discuss karo.
1 6 but i wrote 5 }
2 see above
3 d
4 al4c3
5 b
6 a actuallt it was c

Q4------------Al4c3 was a diff ques.........Q4 ki options were like beryllium nd magnesium etc...???????
Q 2 of above was. Different than wat mentioned above itvwas 38 Q like 1(d) 1&2(b) etc not in first like (+2 +0)
please reply!