Food Preservatives

Q.

What are food preservatives? Give example

Q.

What are antioxidants and what is the full form of BHA and BHT?

Q.

Which of the following are not used as food preservatives?
(a) Table salt
(b) Sodium hydrogencarbonate
(c) Cane sugar
(d) Benzoic acid

Q. Which of the following is/are barbituric acid derivatives tranquilizer(s)?

1. Veronal
2. Equanil
3. Amytal
4. Numinal

Q.

Name two antioxidants generally added to fats/oils-containing foods to prevent rancidity.

Q.

Pickles have a long shelf life and do not get spoiled for months, why?

Q. Which one of the following chemicals is responsible for the production of $HCl$ in the stomach leading to irritation and pain ?

1. 
2. 
3. 
4. 

Q.

Salts of sorbic acid and propionic acid are used as:

1. Food preservatives

2. Flavouring agents

3. Antioxidants

4. Detergents

Q.

Which of the following is not classified as a derivative of a carboxylic acid?

1. Alcohol

2. Ester

3. Acid halide

4. Amide

Q.

Which chemical is added in the process of coagulation?

Q. Which of the following is used as a preservative to protect processed food?

1. Tetrazine
2. Saccharin
3. Alitame
4. Sodium metabisulphite

Q. In basic dyes which of the following group is present?

1. $-N{O}_2$
2. $-S{O}_{3}H$
3. $-OH$
4. $-N{H}_2$

Q.

Sodium salts of some acids are very useful as food preservatives. Suggest a few such acids.

Q.

Preservatives are chemicals that are used to prevent food.

1. True
2. False

Q. The artificial sweetener containing chlorine that has the appearance and taste as that of sugar and is stable at cooking temperature is:
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1. Aspartame
2. Alitame
3. Saccharin
4. Sucralose

Q.

Assertion and Reason
In the following questions a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice..
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains asssWon.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is wrong statement.
(e) Assertion is wrong statement reason is correct statement.

Assertion (A) All chemicals added to food items are called food preservatives. Reason (R) All these chemicals increase the nutritive value of the food.

Q.

How do antioxidants check rancidity? Give one example.

Q.

Explain how the addition of antioxidants to ghee can prevent it from going rancid.

Q.

____________ is used in the hydrogenation of vegetables oils to make vegetable ghee.

Q. What are Anti-oxidants? Why are they added to fat and oil containing foods?

Q.

Assertion and Reason
In the following questions, a statement of assertion (A) followed by a statement reason (R) is given. Choose the correct answer out of the following choice.
(a) Assertion and reason both are correct statements but reason does not explain assertion.
(b) Assertion and reason both are correct and reason explains asssWon.
(c) Both assertion and reason are Wrong statements.
(d) Assertion is correct statement reason is the wrong statement.
(e) Assertion is wrong statement reason is the correct statement.

Assertion (A) Preservative is added to food items.
Reason (R) Preservatives inhibit the growth of microorganisms.

Q.

Pectin powder is used to preserve jams and jellies.

1. True
2. False

Q. how nitroglycerine is an ester or alchol a nitro compound or acid n wh

Q.

The processing of food with ionizing radiation by either high energy electrons or x-rays or gamma rays is called

1. Irradiation

2. Radiation

3. Adulteration

4. Dehydration

Q. Due to hectic and busy schedule, Mr, Awasthi made his life full of tension and anxiety. He started taking sleeping pills to overcome the depression without consulting the doctor. Mr. Roy, a close friend of Mr. Awasthi advised him to stop taking sleeping pills and suggested to change his lifestyle by doing Yoga, meditation and some physical exercise. Mr. Awasthi followed his friend's advice and after few days he started feeling better.
After reading the above passage, answer the following:
(i) What are the values (at least two) displayed by Mr. Roy?
(ii) Why it is not advisable to take sleeping pills without cosulting doctor?
(iii) What are tranquilizers? Give two examples.

Q. Which one of following is employed as a tranquilizer ?

1. Chlorpheninamine
2. Equanil
3. Naproxen
4. Tetracycline

Q. Write physical methods of food preservation.

Q. What are antioxidants? Give example.

Q. Antioxidants are added to foods containing fats/oil. Why?

Q.

How is dacron obtained from ethylene glycol and terephthalic acid?