Nutrition and Food Sources

Lactic acid is naturally found in milk and dairy products. It is produced through bacterial fermentation of lactose (milk sugar). Tea, coffee, and Vitamin C do not contain lactic acid.

Carrots are rich in beta-carotene, which the body converts to vitamin A, making them an excellent source. Cereals like wheat and rice are not significant vitamin A sources. Pulses are protein-rich but not vitamin A sources.

Soybeans are among the richest plant sources of protein, containing approximately 36-56% protein by weight. This is significantly higher than meat (which has high protein but also high fat and water content), green leafy vegetables (which are primarily fiber and water with modest protein), or oranges (which are mainly carbohydrates with minimal protein). Soybeans are a complete protein source, making them particularly valuable in vegetarian diets.

This is the correct option. Bean is rich in proteins and is obtained from the seeds of leguminous plants.

This is the correct option. Carbohydrates are the energy-giving foods. Proteins are the growth-promoting foods. Minerals are the protective foods.

Tomatoes are relatively high in oxalates, compounds that can contribute to the formation of certain types of kidney stones. People prone to kidney stones, particularly calcium oxalate stones, are often advised to limit high-oxalate foods. Lemon, vinegar, and lentils do not have the same association with kidney stone formation.

Egg and soyabean are good sources of proteins.

Milk, meat and eggs are used as food. Skin is used to make leather. Waste is used as manure. Bones are also used as fertilizer. Thus, this option is correct.

Fruits have high water content, low food value but are rich in minerals and vitamins. Commonly the term fruit is used for those which are eaten without cooking.

Potato contains carbohydrates that are energy giving.

Tannic acid, a type of tannin, is naturally found in various plant sources. Tea leaves are particularly rich in tannic acid, which contributes to their characteristic astringent taste and is responsible for the dark color in brewed black tea. While other sources like fruits (especially unripe ones), nuts, and tree bark also contain tannins, tea is one of the most well-known and commercially significant natural sources.

Citric acid is abundantly found in citrus fruits, with lemons being one of the richest natural sources. Lemons contain approximately 5-8% citric acid by weight, which gives them their characteristic sour taste. Citric acid serves as a natural preservative and flavor enhancer in many food products.

Pulses are a rich source of plant protein and milk is a rich source of animal protein.

This is the correct option. These contain fibres and roughage that is good for preventing constipation.