Q1. The major fatty acid in rice is?

1. Linoleic acid
2. Oleic acid
3. Palmitic acid
4. All of the above

ANSWER:  D. All of the above

• Explanation – Rice’s lipid content (1-2%) is mostly found in the bran component. Linoleic, oleic, and palmitic acids are the most common fatty acids. Tocopherol (vitamin E), enzymes, and pigments are also present. The rice grain is deficient in vitamins A, D, and C. The nutritional makeup of rice grain is affected by processing such as milling, enrichment, and better types of rice crops in farming. Rice grains are also used to make a variety of items.

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Q2. Pulses are rich in lysine but poor in _________.

1. Methionine
2. Aspargine
3. Leucine
4. Isoleucine

ANSWER: A. Methionine

• Explanation – Various portions of the rice grain have different nutritional compositions. Starch makes up the majority of the soluble carbs. The indigestible fiber fraction is found in bran and hull. Amylose and amylopectins are two types of starches. Although the protein is of higher quality, it is lacking in the amino acid lysine. Lysine is abundant in pulses, but methionine is scarce. Protein quality improves when ingested jointly due to mutual supplementing. Rice’s lipid content (1-2%) is mostly found in the bran component.

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Q3. Hundred grams of Rice gives more than ______ of energy.

1. 200Kcal
2. 345Kcal
3. 235Kcal
4. 155Kcal

ANSWER – B. 345Kcal

• Explanation: Rice is the primary source of energy in Asian countries, accounting for 70 to 80 percent of total energy. It also makes up the majority of the meal. The bran has the highest calorie and protein content of the rice milling fractions, whereas the hull has the lowest. Rice provides more than 345 kcal of energy per 100 grams. Due to its large usage, it serves as the primary energy source.

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Q4. The rice lacks vitamin _____.

1. Vitamin A
2. Vitamin D
3. Vitamin C
4. All of the above

ANSWER: D. All of the above

• Explanation: The B vitamins are contained in the rice grain’s Bran layer. It also has tocopherol in it (vitamin E). The rice is deficient in vitamins A, D, and C. The scutellum contains 50% of the total thiamine in rice grain, while the pericarp and aleurone layer contains 80-85 percent niacin. The embryo contains 95 percent of the total tocopherol and one-third of the rice grain’s oil content. The bran contains 39 percent riboflavin, compared to only 8% in polished rice and 53% in milled rice fractions.

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Q5. ________ are the principle salts of phytin.

1. Potassium
2. Magnesium
3. Phytin
4. Both A and B

ANSWER: D. Both A and B

• Explanation – Minerals are also contained in the bran and outer layer of brown rice. Phosphorus is mostly found in the form of phytin phosphorus, which accounts for around 90% of all phosphorus. The main salts of phytin are potassium and magnesium. In rice, the bran contributes 51% of the minerals ash, while the polis contributes 10%. The phosphorus phytin is found in the bran but cannot be absorbed. These are insoluble, and they obstruct iron absorption. Rice that hasn’t been polished contains a lot of them.

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