Pigments - Food Chemistry and Nutrition - Engineering Sciences Previous Year Questions

1

2008 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2008

Which of the following is the structure of flavonol?

A

A structure with a benzene ring having two OH groups at adjacent positions.

B

A structure with a benzene ring fused to a heterocyclic ring containing an oxygen atom and a carbonyl group, with a phenyl substituent.

C

A structure with a benzene ring fused to a heterocyclic ring containing an oxygen atom and a carbonyl group, with a phenyl substituent and an additional OH group on the heterocyclic ring.

D

A structure with a benzene ring having an OH group and a -CH=CHCOOH substituent.

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2

2012 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2012

The important role of carotenoids in the human diet is their ability to serve as precursors of

A

Vitamin C

B

Vitamin D

C

Vitamin A

D

Vitamin K

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3

2015 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2015

Match the edible plant tissue in Group I with the type of carotenoid given in Group II

Group I	Group II
(P) Corn	(1) Lycopene
(Q) Red pepper	(2) β-Carotene
(R) Pumpkin	(3) Capsanthin
(S) Tomato	(4) Lutein

A

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

B

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

C

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

D

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

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4

2015 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2015

Green tea is considered to be a more healthy option than black tea because it

A

has high content of polyphenols

B

is richer in thearubigin

C

does not require any sweetener during tea preparation

D

has no microbial load

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5

2018 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2018

Which of the following is oil soluble pigment present in fruits and vegetables?

A

Flavonoids

B

Carotenoids

C

Anthocyanins

D

Tannins

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6

2021 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2021

Choose the correct pair of pigment and their corresponding color in given plant product.

A

Carotene - Yellow-orange-Peppers

B

Betanin – Purple/red-Cactus pear

C

Lycopene – Red-Red beets

D

Flavanols – Orange-Cauliflower

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7

2025 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2025

Which of the following pigment does NOT have pro-vitamin A activity?

A

β-Carotene

B

β-Cryptoxanthin

C

Lycopene

D

α-Carotene

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8

2026 · Engineering Sciences · Food Chemistry and Nutrition · Pigments

Engineering Sciences (XE) 2026

Carmine, a food colorant, is derived from

A

Curcuma longa

B

Dactylopius coccus

C

Beta vulgaris

D

Monascus purpureus

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