Gate Yearwise 

Textile Engineering Gate 2017 Questions with Answer

Ques 27 GATE 2017

The growth of bacteria (lactobacillus) in milk leads to curd formation. A minimum bacterial population density of 0.8 (in suitable units) is needed to form curd. In the graph below, the population density of lactobacillus in 1 litre of milk is plotted as a function of time, at two different temperatures, 25°C and 37°C.

Consider the following statements based on the data shown above:
i. The growth in bacterial population stops earlier at 37°C as compared to 25°C
ii. The time taken for curd formation at 25°C is twice the time taken at 37°C
Which one of the following options is correct?

A

Only i

B

Only ii

C

Both i and ii

D

Neither i nor ii


(a) is the correct answer.

Ques 28 GATE 2017

Vapour-phase flame retardant agents are based on compounds containing

A

Nitrogen

B

Phosphorus

C

Halogens

D

Aluminium


(c) is the correct answer.

Ques 29 GATE 2017

White specks observed in dyed cotton fabric are attributed to

A

Poor wash fastness of dyes

B

Non-uniform agitation of dye bath

C

Low temperature of dyeing

D

Presence of immature cotton fibres


(d) is the correct answer.

Ques 30 GATE 2017

Number of moles, accurate to one decimal place, required in 200 cm³ to make 0.5 mol l⁻¹ sodium hydroxide solution is


(0.09 to 0.11) is the correct answer.

Ques 31 GATE 2017

Compared to conventional sizing, the wet sizing process reduces

A

Size consumption substantially

B

Consumption of drying energy

C

Weavability of warp yarn

D

Tensile strength of yarn


(a) is the correct answer.

Ques 32 GATE 2017

Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]
Assertion: Jet dyeing machines yield level dyeing in short dyeing time
Reason: Jet dyeing machines use pressure jets to force dye into the fibre

A

Both [a] and [r] are true, and [r] is the correct reason for [a]

B

Both [a] and [r] are true, but [r] is not the correct reason for [a]

C

Both [a] and [r] are false

D

[a] is true but [r] is false


(d) is the correct answer.

Ques 33 GATE 2017

Group I lists chemical processes. Group II lists chemicals used in these processes. Match the process with the corresponding chemical

Group I Group II
P. Carbonising 2. H2SO4
Q. Scouring 1. Na2CO3
R. Bleaching 4. H2O2
S. Mercerising 3. NaOH

A

P-2, Q-3, R-4, S-1

B

P-2, Q-1, R-4, S-3

C

P-3, Q-1, R-2, S-3

D

P-2, Q-1, R-3, S-4


(b) is the correct answer.

Ques 34 GATE 2017

Determine the correctness or otherwise of the following statements
[p] The contact angle θ is indicative of the wettability of a textile surface by a liquid.
[q] Values of θ > 90° indicate poor wetting surfaces.

A

Both [p] and [q] are true

B

Both [p] and [q] are false

C

[p] is true but [q] is false

D

[p] is false but [q] is true


(a) is the correct answer.

Ques 35 GATE 2017

The add-on of a chemical finish required on a fabric is 3% on-weight-of-fabric (owf). If the wet pick up is 80%, then the concentration of finish required in the padding bath, in % (wt/wt), accurate to two decimal places, is


(3.50 to 4.00) is the correct answer.

Ques 36 GATE 2017

Determine the correctness or otherwise of the following Assertion [a] and the Reason [r]
Assertion: Burnt out effect on polyester/cotton blend fabric can be obtained by printing
Reason: Printing paste contains a reagent that releases an acid during steaming

A

Both [a] and [r] are true and [r] is the correct reason for [a]

B

Both [a] and [r] are true but [r] is not the correct reason for [a]

C

Both [a] and [r] are false

D

[a] is true but [r] is false


(a) is the correct answer.

Ques 37 GATE 2017

The characteristic observation in burning test of cotton fibre is

A

Burns readily with whitish ash as residue

B

Burns with dripping

C

Burns with burning hair smell

D

Melts and forms a hard bead


(a) is the correct answer.

Ques 38 GATE 2017

The given structure is a repeat unit of

A

Cellulose acetate

B

Cellulose

C

Polyamide

D

Polyester


(b) is the correct answer.

Ques 39 GATE 2017

Which of the following is(are) bast fibre(s)
P. Cotton
Q. Flax
R. Silk
S. Jute

A

P only

B

Q and R only

C

Q and S only

D

S only


(c) is the correct answer.

Unique Visitor Count

Total Unique Visitors

Loading......

Question Options

Contributed by: