ECH-III (UT-113)
ECH-III (UT-113)
¶ß±Ó¬fl¡ ¬Û±Í¬Sê˜ ( B.D.P.)
ø˙鬱¬ı¯∏«±ôL ¬Û¬ı˛œé¬± ( Term End Examination )
øάÀ¸•§¬ı˛, 2013 › Ê≈√Ú, 2014
[‡]
¬ı˛¸±˚˛Ú ( Chemistry )
!
‹ø26√fl¡ ¬Û±Í¬Sê˜ ( Elective )
Ó‘¬Ó¬œ˚˛ ¬ÛS ( 3rd
¸˜˚˛ – ≈√˝◊√ ‚KI◊±¬
Paper : Inorganic Chemistry-II)
!
۔̫˜±Ú – 50
Time : 2 hours
3º
Full Marks : 50
Œfl¡ ¬ı±ø˘ › ·±Ï¬ˇ H2 SO4 ¸˝√√À˚±À· ά◊M√5
fl¡¬ı˛± ˝√√˘ º
[·] B2 H6 -¤ ’…±À˜±øÚ˚˛± Œ˚±· fl¡À¬ı˛ ά◊M√5 fl¡¬ı˛± ˝√√˘ º
[‚] ¸√… õ∂dÓ¬
^¬ıÌ øÊ√À˘øȬÀÚ¬ı˛ ά◊¬Ûø¶öøÓ¬ÀÓ¬
’…±À˜±øÚ˚˛± ^¬ıÀÌ Œ˚±· fl¡¬ı˛± ˝√√˘ º
1º
!
10 × 2 = 20
[fl¡] Œ¬ıø¬ı˛˘ ŒÔÀfl¡ Œ¬ıø¬ı˛ø˘˚˛±˜ øfl¡ˆ¬±À¬ı øÚ©®±˙Ú fl¡¬ı˛± ˝√√˚˛ ∑
¸˜œfl¡¬ı˛Ì¸˝√√ ’±À˘±‰¬Ú± fl¡èÚº
3+ 2
4º
!
21
¬ı˛±¸±˚˛øÚfl¡ ¸˜œfl¡¬ı˛Ì¸˝√√ fl¡œ ‚ÀȬ ø˘‡≈Ú –
[fl¡] ’•°˚≈Mê√
˝√√˘ º
B.Sc-5254-Y
!
KMnO4 ^¬ıÀÌ
2
×
NF3
¬ÛÀ¬ı˛¬ı˛ ¬Û‘ᬱ˚˛ ^©Ü¬ı…
˝√√˚˛
!
¸≈ø¶ö¬ı˛, øfl¡c
BCl3
NCl3
ø¬ıÀ¶£¬±¬ı˛fl¡ º
!
·…±¸ øfl¡c
AlCl3
fl¡øÍ¬Ú ¬Û√±Ô« º
[fl¡] ˝√√±˝◊√ÀE±ÀÊ√ÀÚ¬ı˛ ’ôLÒ‘øÓ¬ ¬ı˘ÀÓ¬ fl¡œ Œ¬ı±ÀÁ¡Ú ∑ ’ôLÒ‘«øÓ¬¬ı˛
fl¡±¬ı˛Ì ¬ı…±‡…±
fl¡èÚ º
3+ 2
!
Œ|Ìœ¬ı˛ õ∂Ô˜ Œ˜Ã˘ N-¤¬ı˛ ’±‰¬¬ı˛Ì ¬ı…øÓ¬Sê±ôL º ¤¬ı˛
fl¡±¬ı˛Ì ά◊À~‡ fl¡À¬ı˛ ¸—Àé¬À¬Û ’±À˘±‰¬Ú± fl¡èÚ º
5
15
Œ˚-Œfl¡±ÀÚ± øÓ¬ÚøȬ õ∂Àùü¬ı˛ ά◊M√¬ı˛ ø√Ú –
5º
6 × 3 = 18
Ù≈¬À˘ø¬ı˛Ú fl¡œ ∑ ¤À√¬ı˛ õ∂døÓ¬ › ¬ı…¬ı˝√√±¬ı˛ ¸•§Àg fl¡œ Ê√±ÀÚÚ
ø˘‡≈Ú º
2 + 3+ 1
!
[
CCl4
4
ø¬ıˆ¬±· - ‡¡
4
¤fl¡ È≈¬fl¡À¬ı˛± √ô¶± Œ˚±· fl¡¬ı˛±
¸˝√√ÀÊ√˝◊√ ’±^« ø¬ıÀù≠ø¯∏Ó¬ ˝√√˚˛, øfl¡c
×
[·¡] Œ¬ı±ø¬ı˛fl¡ ’…±ø¸Î ¤fl¡øȬ ˜‘≈√ ’…±ø¸Î¬√ ˝√√À˘› ø¢≠¸±¬ı˛À˘¬ı˛
ά◊¬Ûø¶öøÓ¬ÀÓ¬
Ó¬œ¬ıË ’…±ø¸Àά¬ı˛ ˜Ó¬ ’±‰¬¬ı˛Ì fl¡À¬ı˛ º
!
[‡]
[‡] ø˘øÔ˚˛±˜ ¤¬ı— ˜…±·ÀÚø¸˚˛±À˜¬ı˛ fl¡Ì« ¸•Ûfl«¡ fl¡±¬ı˛Ì¸˝√√
’±À˘±‰¬Ú± fl¡èÚ º Ò±Ó≈¬≈√øȬ¬ı˛ ÒÀ˜«¬ı˛ øÓ¬ÚøȬ ¸±‘√À˙…¬ı˛
ά◊À~‡ fl¡èÚ º
2+ 3
2º
[‡¡]
[‚¡]
Œ˚-Œfl¡±ÀÚ± ≈√íøȬ õ∂Àùü¬ı˛ ά◊M√¬ı˛ ø√Ú –
SiCl4
2
Ú± º
!
ø¬ıˆ¬±· - fl¡
21
fl¡±¬ı˛Ì¸˝√!√ ¬ı…±‡…± fl¡èÚ –
Weightage of Marks : 70%
¬Ûø¬ı˛ø˜Ó¬ › ˚Ô±˚Ô Î¬◊M√ À¬ı˛¬ı˛ Ê√Ú… ø¬ıÀ˙¯∏ ˜”˘… Œ√›˚˛± ˝√√À¬ıº
’qX ¬ı±Ú±Ú, ’¬Ûø¬ı˛26√ißÓ¬± ¤¬ı— ’¬Ûø¬ı˛©®±¬ı˛ ˝√√ô¶±é¬À¬ı˛¬ı˛ Œé¬ÀS Ú•§¬ı˛ Œfl¡ÀȬ
ŒÚ›˚˛± ˝√√À¬ıº ά◊¬Û±ÀôL õ∂Àùü¬ı˛ ˜”˘…˜±Ú ¸”ø‰¬Ó¬ ’±ÀÂ√º
CaF2
!
NaOCl
[fl¡]
[ ˜±ÀÚ¬ı˛ &èQ – 70% ]
2
B.Sc-5254-Y
3
6º
ECH-III (UT-113)
ECH-III (UT-113)
[fl¡] ’ÀÔ«±Ú±˝◊√À¬∏C±ÀÙ¬Ú˘
àœ˜
ά◊¡Z±˚˛œ
øfl¡c
¬Û…±¬ı˛±Ú±˝◊√À¬∏C±ÀÙ¬Ú˘ àœ˜ ά◊¡Z±˚˛œ Ú˚˛ º ¬ı…±‡…± fl¡èÚ º
ø¬ıˆ¬±· - ·¡
11º
[‡] Sê±Î¬◊Ú ˝◊√Ô±¬ı˛ fl¡±À√¬ı˛ ¬ı˘± ˝√√˚˛ ∑ ¤À√¬ı˛ ∆¬ıø˙©Ü… fl¡œ ∑
1+ 2
8º
[fl¡] ’¬Û¬ı˛±Ó¬øάˇ»Òø˜«Ó¬±¬ı˛ ÿÒ√ı«SêÀ˜ ¸±Ê√±Ú –
Sn º
9º
3+ 3
13º
!
14º
!
2
+
[‡]
1
!
17º
2
’˚˛(≈•§fl¡œ˚˛ (paramagnetic) ¤¬ı— NO +
øÓ¬¬ı˛(≈•§fl¡œ˚˛ ¬ (diamagnetic) ı…±‡…± fl¡èÚ º 3
NO
!
B.Sc-5254-Y
SiO2
ά◊2‰¬ ·˘Ú±—fl¡ ø¬ıø˙©Ü fl¡øͬÚ, øfl¡c
[¬ÛÀ¬ı˛¬ı˛ ¬Û‘ᬱ˚˛ ^©Ü¬ı…
CO2 ·…±¸º
—
3
!
(i)
Al4 C 3 + D2 O = ....+....
(ii)
3
H
1
SiHCl3
-¤¬ı˛ ¶£≈¬È¬Ú±Ç
!
fl¡˜ º ¬ı…±‡…± fl¡èÚ º
18º
H3PO2 , H3PO
! 3
Sê˜ ¬ı…±‡…± fl¡èÚ º
!
!
B.Sc-5254-Y
11
2
"
2
2
+ 1H = ......+.......
!
!
3
16º ø¬ıøSê˚˛±&ø˘ ¸•Û”Ì« fl¡èÚ –
10º [fl¡] øÙˬ˚˛Ú fl¡œˆ¬±À¬ı ∆Ó¬¬ı˛œ fl¡¬ı˛± ˝√√˚˛ ∑ Ó¬±¬ı˛± fl¡œˆ¬±À¬ı
¬Ûø¬ı˛À¬ıÀ˙¬ı˛ é¬øÓ¬ fl¡À¬ı˛ ∑
11 + 11
2
Œé¬ÀS ¬ıgÚ¡ Œfl¡±À̬ı˛
15º ø¸øÊ√˚˛±˜ ˝√√±˝◊√E±˝◊√ά ¤¬ı— ø˘øÔ˚˛±˜! ˝√√±˝◊√E±˝◊√Àά¬ı˛ ˜ÀÒ… Œfl¡±ÚƒøȬ
Œ¬ı˙œ ¶ö±˚˛œ ¤¬ı— Œfl¡Ú ∑
1+ 2
3
[‡] q©® ¬ı¬ı˛Ù¬ fl¡œ ∑ ¤¬ı˛ ¬ı…¬ı˝√√±¬ı˛ ά◊À~‡ fl¡èÚ º
NH3 "
"# PH3 "
"# AsH3 -¤¬ı˛
¬ı…±‡…± fl¡èÚ º
Cs + > Rb + > K + > Na + > Li + —¬¬¬ı…±‡…±
!
3
˜±¬Û-¤¬ı˛ Sê˜ ¬ı…±‡…± fl¡èÚ º
[fl¡] ^¬ıÀÌ é¬±¬ı˛ Ò±Ó≈¬¬ı˛ ’±˚˛Ú ¬Ûø¬ı˛¬ı±ø˝√√Ó¬±¬ı˛ ˜±Ú øڕ߬ı˛+À¬Û
˝}√±¸ ¬Û±˚˛ –
fl¡èÚ º
Œ|Ìœ¬ı˛ Œ˜Ã˘&ø˘¬ı˛ ’±˚˛ÚÚ ø¬ıˆ¬¬ı Œ|Ìœ ¬ı¬ı˛±¬ı¬ı˛ fl¡œˆ¬±À¬ı
12º ˝√√±˝◊√ÀE±ÀÊ√Ú Œ¸Ó≈¬¬ıgÚ fl¡±Àfl¡ ¬ıÀ˘ ∑ ά◊√±˝√√¬ı˛Ì ø√Ú º 2 + 1
3
[fl¡] ø¸ø˘Àfl¡±Ú
[‡] ›˚˛±È¬±¬ı˛ ·…±¸ º
13
¬Ûø¬ı˛¬ıøÓ«¬Ó¬ ˝√√˚˛ ∑ ¬ı…±‡…± fl¡èÚ º
C, Si, Ge,
[‡¡] Œ¸±˝√√±·± &øȬ ¬Û¬ı˛œé¬± fl¡œ ∑ ¬ı˛±¸±˚˛øÚfl¡ ¸˜œfl¡¬ı˛Ì¸˝√√
ø¬ı¬ı‘Ó¬ fl¡èÚ º
3
øÚ•ßø˘ø‡Ó¬ Œ˚÷&ø˘¬ı˛ õ∂døÓ¬ › ¤fl¡øȬ fl¡À¬ı˛ ¬ı…¬ı˝√√±¬ı˛ ø˘‡≈Ú –
3 × 4 = 12
Œ˚-Œfl¡±ÀÚ± ‰¬±¬ı˛øȬ¬ õ∂Àùü¬ı˛ ά◊M√¬ı˛ ø√Ú –
3
7º
4
CHCl3
!
-¤¬ı˛!¶£≈¬È¬Ú±Ç ’À¬Û鬱
3
¤¬ı—
H3PO4
-¤¬ı˛ ’±ø•°fl¡ Ó¬œ¬ıËÓ¬±¬ı˛
3
ECH-III (UT-113)
ECH-III (UT-113)
( English Version )
(c)
Special credit will be given for precise and correct
answer. Marks will be deducted for spelling
mistakes, untidiness and illegible handwriting.
The figures in the margin indicate full marks.
Group-A
Answer any two questions.
1.
2.
10 × 2 = 20
(a) How is beryllium extracted from beryl ?
Discuss with equations.
3+2
(b) Discuss with reasons the diagonal
relationship of lithium and magnesium.
Mention three similarities of properties
of the two metals.
2+3
Write with chemical equations what happens
when —
(a)
(b)
(c)
! (d)
3.
2
2
1
2
SiCl4 is readily hydrolised but CCl4 is
not.
!
NF3 is stable but NCl3 is explosive.
!
[
!
¬ÛÀ¬ı˛¬ı˛ ¬Û‘ᬱ˚˛ ^©Ü¬ı…
although
a
weak
acid
of glycerol.
4.
(d)
BCl3 is a gas but AlCl 3 is a solid.
(a)
What do you mean by occlusion of
hydrogen
!
?
occlusion .
(b)
Explain
!
the
causes
of
3+2
The behaviour of N, the first element of
group 15 is anomalous. Discuss briefly
stating reasons.
5
Group-B
×4
×4
acid,
behaves like a strong acid in presence
Answer any three questions :
5.
6.
6 × 3 = 18
What are fullerenes ? Write what you know
about their preparation and uses.
(a)
2+3+1
Ortho-nitrophenol is steam volatile but
para-nitrophenol is not. — Explain.
a freshly prepared NaOCl solution is
added!to ammonia solution in presence
of gelatine. !
(b)
!
B.Sc-5254-Y
!
2
a piece of zinc is added to an acidified
solution of KMnO4 .
CaF2 is heated with ! sand and
concentrated H2 SO4 .
ammonia
is added to B2 H6 and heated.
!
Explain with reasons :
(a)
1
Boric
2
(b)
Which are called crown ethers ? What
are their characteristics ?
7.
(a)
3
Arrange
in
the
increasing
1+2
order
:
Electro-negativity of C, Si, Ge and Sn. 3
(b)
What is Borax bead test ? State with
chemical equations.
B.Sc-5254-Y
3
3
8.
ECH-III (UT-113)
Write down the preparation and one use of
ECH-III (UT-113)
12. What is Hydrogen
the following compounds :
9.
a)
Silicones
b)
Water gas.
(a)
In
4
bridge bond
? Give
example.
2+1
13. Explain the sequence of bond angles in case
solution
conductivity
3+3
the
of
values
the
of
alkali
of NH3 "
"# PH3 "
"# AsH3 .
3
ionic
metals
14. SiO 2 is a high melting solid but CO2 is a
!
decrease in the following order :
Cs + > Rb + > K + > Na + > Li + — Explain.
gas. Explain.
! Between
15.
cesium
3
!
hydride
and
lithium
3
hydride, which one is more stable and why ?
! (b)
What is dry ice ? Mention its uses. 2 + 1
1+2
10. (a)
How are freons prepared ? How do they
cause damage to the environment ?
1
(b)
NO
is
paramagnetic
and
diamagnetic. — Explain.
!
Group-C
Answer any four questions.
1
2
NO
!
+1
+
1
2
is
3
!
3 × 4 = 12
11. How do the ionisation potentials of Group
16. Complete the following reactions :
(i)
Al4 C 3 + D2 O = .......+........
(ii)
3
1H
+ 21H = ..... + .....
B.Sc-5254-Y
[¬ÛÀ¬ı˛¬ı˛ ¬Û‘ᬱ˚˛ ^©Ü¬ı…
1
2
×2
!
17. The boiling point of SiHCl 3 is less than that
!
!
of CHCl 3 . Explain.
3
!
18. Explain the sequence
of increase in acidic
!
strength in H3PO2 , H3PO3 ad H3PO4 .
13 elements vary along the group ? Explain.
3
1
!
B.Sc-5254-Y
!
3