Chemistry
Discussion
Ask a question about this paper, or help someone else with theirs. Answers are emailed to whoever asked.
No questions yet — be the first to ask.
Need a paper or stuck on a question? Ask here — students reply and you get an email.
Ask about a paper-
BS ZOOLOGY first semester Animal diversity ZOOL 101 - university of Punjab 2025
0 replies Reply → -
Literary criticism
1 reply Reply → -
this paper consists of 60 marks but now we have 35 marks paper.
1 reply Reply → -
Can you please tell me more past papers please because my exams are starting from next week
1 reply Reply → -
Did you provide the past papers of the science of society uos?
1 reply Reply →
More Chemistry papers
See all
Paper text
THE ANSWERS MUST BE ATTEMPTED ON THE ANSWER SHEET PROVIDED
Q.1. Answer the following short questions:
(15x2=30)
1. Draw N(E) curves for N-type and P-type semiconductors.
il. Discuss the d'sp hybridization with one example of metal carbonyl.
lil. What are the reactions of Fe(CO)s with the
(i) NaOH (il) X:
Iv. Discuss the preparation of NI(CO)+
v. Calculate the EAN of (Fe(NO)(CO)s)
What are metal nitrosyls?
Discuss the structure of [(NI(CN),]* on the basis of VBT.
Calculate the CFSE for low-spin d°- system.
Ix. Write the reaction of NI(CO), with
(a) Na
(b) 8rz
*. Discuss the crystal field splitting in tetrahedral complexes
xi. What is the effect of Impurity in metals and semi-conductors?
xii. Discuss Sidgwick's theory about coordination compounds.
Xil.
Define Fermi level with example.
xiv.
How are X-rays produced and what is soft X-rays spectra?
xv. What is the effect of temperature on intrinsic and extrinsic semiconductors?
Answer the following questions.
(Зх10=30)
Q.2.
Discuss the chemistry of dicobalt octacarbonyl. Give preparation, properties and structure.
0.3.
Explain Crystal Field Theory in detall. How 10 Do can be determined and how is it affected by var
factors?
1.4.
How doN(E) curves explain the difference in conductivity of univalent, bivalent and trivalen
