CBSE Class 12 Textile Chemical Processing Question Paper 2020

H$moS> Z§.
Code No. 303
amob Z§. narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð
Roll No. >na Adí` {bIo§ &
Candidates must write the Code on the
title page of the answer-book.

ZmoQ> NOTE
(I) H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV (I) Please check that this question
n¥ð> 7 h¢ & paper contains 7 printed pages.

(II) àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS (II) Code number given on the right
>Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na hand side of the question paper
{bI| & should be written on the title page of
the answer-book by the candidate.
(III) H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| (III) Please check that this question
>20 àíZ h¢ & paper contains 20 questions.
(IV) H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go (IV) Please write down the Serial
nhbo, CÎma-nwpñVH$m _| àíZ H$m H«$_m§H$ Number of the question in the
Adí` {bI| & answer-book before attempting it.
(V) Bg àíZ-nÌ H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m (V) 15 minute time has been allotted to
g_` {X`m J`m h¡ & àíZ-nÌ H$m {dVaU read this question paper. The
nydm©• _| 10.15 ~Oo {H$`m OmEJm & question paper will be distributed
10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db at 10.15 a.m. From 10.15 a.m. to
10.30 a.m., the students will read the
àíZ-nÌ H$mo n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ question paper only and will not
do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & write any answer on the
answer-book during this period.
dñÌ agm`Z g§gmYZ
TEXTILE CHEMICAL PROCESSING

{ZYm©[aV g_` : 2 12 KÊQ>o A{YH$V_ A§H$ : 50
1
Time allowed : 2 hours Maximum Marks : 50
2

.303 1 P.T.O.

gm_mÝ` {ZX}e :
{ZåZ{b{IV {ZX}em| H$mo ~hþV gmdYmZr go n{‹T>E Am¡a CZH$m g™Vr go nmbZ H$s{OE :
(i) Bg àíZ-nÌ _| 20 àíZ em{_b h¢ &
(ii) àíZ-nÌ Xmo IÊS>m| _| {d^m{OV h¡ &
IÊS> H$
 ~hþ{dH$ënr` àíZ /[aº ñWmZ ^[aE /grYo àíZ : Hw$b 12 àíZ em{_b h¢ Omo
1 – 1 A§H$ Ho$ h¢ & BZ_| go {H$Ýht 10 àíZm| Ho$ CÎma Xr{OE &
 A{V bKw-CÎmar` àíZ : BZ_| Hw$b 7 àíZ em{_b h¢, àË`oH$ àíZ 2 A§H$ H$m h¡ &
BZ_| go {H$Ýht 5 àíZm| Ho$ CÎma Xr{OE &
 bKw-CÎmar` àíZ : BZ_| Hw$b 7 àíZ em{_b h¢, àË`oH$ àíZ 3 A§H$ H$m h¡ & BZ_| go
{H$Ýht 5 àíZm| Ho$ CÎma Xr{OE &
IÊS> I
XrK©-CÎmar` /{Z~ÝYmË_H$ àíZ : BZ_| Hw$b 5 àíZ em{_b h¢, àË`oH$ àíZ 5 A§H$ H$m h¡ &
BZ_| go {H$Ýht 3 àíZm| Ho$ CÎma Xr{OE &
(iii) Ohm± gå^d hmo, AnZo CÎmam| H$mo {M{ÌV H$s{OE &
IÊS> H$
1. [aº$ ñWmZm| H$s ny{V© C{MV eãXm| go H$s{OE ({H$Ýht Xg) : 110=10
(i) àma§{^H$ n[agÁOm __________ (H$m~m}ZmBqµOJ/Ob AdamoYH$) 1
(ii) ñH$m°[a¨J ____________ (NaOCl/NaOH) 1
(iii) C^ao V§Vw ___________ (g¡Z\$moamBµOoeZ/qgqOJ) 1
(iv) \¡$bo hþE dñÌ H$s a§JmB© __________ ({OJa/qdM) 1
(v) D$Z H$s a§JmB© ___________ (gë\$a/Eo{gS>) 1
(vi) gyVr dñÌm| H$s a§JmB© ___________ ({S>ñng©/S>mBaoŠQ>) 1
(vii) OWF H$m AW© h¡ ____________ (Am°Z doQ> Am°\$ \¡$~[aH$/AmonZ {dS²>W \¡$~[aH$) 1
(viii) S>mBaoŠQ> N>nmB© ____________ (amoba/amoQ>ar ñH«$sZ) 1
(ix) N>nmB© noñQ> gm_J«r ___________ (hmBS´>mogë\$mBQ>/hmBJ«moñH$mo{nH$ nXmW©) 1
(x) {d{eîQ> H¡$b|S>[a¨J _________ (E_amBqµOJ/_m°B[a¨J) 1
(xi) nmM©_|Q>mBµOoeZ _________ (gmÝÐ H2SO4/VZw H2SO4) 1
(xii) EñWo{Q>H$ d _________ n[agÁOmE± (\§$ŠeZb/âbwAmoamoH$m~©Z) 1

.303 2

General Instructions :
Read the following instructions very carefully and strictly follow them :
(i) This question paper contains 20 questions.
(ii) The question paper is divided into two sections.

SECTION A
 Multiple choice questions / Fill in the blanks/Direct questions :
contains total 12 questions of 1 mark each. Answer any 10 questions.
 Very short answer type questions : contains total 7 questions of
2 marks each. Answer any 5 questions.
 Short answer type questions : contains total 7 questions of 3 marks
each. Answer any 5 questions.
SECTION B
Long answer / Essay type questions : contains total 5 questions of 5 marks
each. Answer any 3 questions.

(iii) Illustrate your answers wherever possible.

SECTION A

1. Fill in the blanks with suitable words (Any ten) : 110=10
(i) Preparatory finish ___________ (Carbonizing/Water resistant) 1
(ii) Scouring ______________ (NaOCl/NaOH) 1
(iii) Protruding fibres __________ (Sanforization/Singeing) 1
(iv) Open width fabric dyeing __________ (Jigger/Winch) 1
(v) Dyeing of wool ___________ (Sulphur/Acid) 1
(vi) Dyeing of cotton fabrics ___________ (Disperse/Direct) 1
(vii) OWF stands for __________ (On Weight of Fabric/Open Width
Fabric) 1
(viii) Direct printing __________ (Roller/Rotary Screen) 1
(ix) Print paste ingredient ____________ (Hydrosulphite/Hygroscopic
agent) 1
(x) Special calendering __________ (Emerising/Moireing) 1
(xi) Parchmentisation ___________ (Conc. H2SO4/Dil. H2SO4) 1
(xii) Aesthetic and ___________ finishes (Functional/Fluorocarbon) 1
.303 3 P.T.O.

A{V bKw-CÎmar¶ àíZ (H$moB© nm±M) : 25=10

2. Xmo àH$ma H$s qgqOJ (Singeing) H$m Zm_ {b{IE & 2

3. E½µOm°eZ (Exhaustion) nXmW© (aoMZ H$_©H$) H$m H$m`© ~VmBE & 2

4. gë’$a (Sulphur) a§Jm| na {Q>ßnUr {b{IE & 2

5. EµOmoBH$ (Azoic) a§Jm| Ho$ Cn¶moJ Ho$ Xmo bm^ ~VmBE & 2

6. ~m{Q>H$ (Batik) N>nmB© {H$g e¡br H$m CXmhaU h¡ ? Bg N>nmB© e¡br _| {H$g nXmW© H$m
Cn`moJ {H$`m OmVm h¡ ? 2$

7. Z¡qnJ (Napping) H$mo g_PmBE & 2

8. S>¡Ho$Q>mBqµOJ (Decatising) Ho$ bú` na boI {b{IE & 2

bKw-CÎmar¶ àíZ (H$moB© nm±M) : 35=15

9. H$ƒo aoe_ _| nmB© OmZo dmbr EH$ Aew{Õ d Cgo hQ>mZo H$s {d{Y ~VmBE & 3

10. {MÌ g{hV qdM (Winch) a§JmB© _erZ na boI {b{IE & 3

11. âbm°H$ (Flock) N>nmB© na boI {b{IE & 3

12. N>nmB© Ho$ {bE ñH«$sZ (Screen) H¡$go V¡`ma H$s OmVr h¡ ? 3

13. hmW go ãbm°H$ (Block) N>nmB© Ho$ Š`m bm^ d gr_mE± h¢ ? 3

14. A{½Z-AdamoYH$ n[agÁOm Ho$ {bE Cn`moJ {H$E OmZo dmbo agm`Zm| Ho$ Zm_ Š`m h¢ ? Eogo
dñÌm| Ho$ Xmo CXmhaU Xr{OE & 3

15. AmYmanyU© d {d{eîQ> n[agÁOm H$m A§Va d àË`oH$ EH$-EH$ CXmhaU Xr{OE & 3

.303 4

Very Short Answer Type Questions (Any five) : 25=10

2. Name the two types of Singeing. 2

3. State the role of an Exhaustion agent. 2

4. Write a note on Sulphur dyes. 2

5. State two advantages of using Azoic dyes. 2

6. Of which style of printing is Batik an example ? Which substance is used
in this style of printing ? 2

7. Explain ‘Napping’. 2

8. Write a note on the purpose of Decatising. 2

Short Answer Type Questions (Any five) : 35=15

9. State one impurity found in raw silk and its removal method. 3

10. Write a note on Winch Dyeing Machine with a diagram. 3

11. Write a note on Flock Printing. 3

12. How is a screen prepared for printing ? 3

13. What are the advantages and limitations of hand-block printing ? 3

14. What are the names of chemicals used to impart flame-repellant
finishes ? Give two examples of such fabrics. 3

15. State the difference between Basic and Special finishes with one example
of each. 3
.303 5 P.T.O.

IÊS> I

XrK©-CÎmar¶ àíZ (H$moB© VrZ) : 5×3=15

16. ‘g©amBµOoeZ (Mercerization) Ho$ bm^ d H$aZo H$s {d{Y H$mo {dñVma _| g_PmBE & 5

17. ñH$m°[a¨J (Scouring) Š`m| Am¡a H¡$go H$s OmVr h¡ ? 5

18. ãbrqMJ (Bleaching) V¡`mar H$s à{H«$`m H$m _hÎdnyU© ^mJ Š`m| _mZm OmVm h¡ ? Bgo H$aZo
Ho$ {bE à`wº$ nXmWm] Ho$ Zm_ ~VmBE & 5

19. gyVr dñÌm| na S>mBaoŠQ> (Direct) a§J M‹T>mZo H$s {d{Y H$m dU©Z H$s{OE & 5

20. aoe_ na Eo{gS> (Acid) a§J H¡$go bJmE OmVo h¢ ? g_PmBE &$ 5

.303 6

SECTION B

Long Answer Type Questions (Any three) : 5×3=15

16. Explain the advantages and method of mercerization in detail. 5

17. Why and how is scouring carried out ? 5

18. Why is bleaching considered an important part of a preparatory process ?
Name substances used for carrying it out. 5

19. Describe the method of applying direct dyes on cotton fabrics. 5

20. How are Acid Dyes applied on silk ? Explain. 5

.303 7 P.T.O.