Science General · Chemistry

Food Processing and Storage

2,379 Questions

Food processing and storage principles focus on preservation techniques, packaging methods, and preventing microbial contamination. These topics are essential for general science sections in various competitive examinations. Questions explore pasteurization, canning, chemical preservation, and safe food handling practices.

Food preservation methodsPasteurization techniquesFood packaging materialsMicrobial contamination preventionCryopreservation concepts

Food Processing and Storage Questions

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation cropping patterns whose forests?

How temperature causes damage to a food material?

  1. It affects the growth of casual organisms

  2. Alters the enzyme action

  3. Both A and B

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Food can be spoiled when temperatures are not controlled because high temperature give way for the growth of bacteria and excessive heat increases the rate of enzyme reactions. Exposing food to clod temperature also damages the food.

So, the correct option is 'Both A and B '.

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation cropping patterns whose forests?

Preventive and control measures adopted for the storage of grains include

  1. Strict cleaning

  2. Proper disjoining

  3. Fumigation

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The grains are stored in huge stores and warehouses. These stores and warehouses should be regularly and strictly cleaned, disinfected and kept dry to avoid ants, insects, worms or rodents infestations and keep the grains safe and hygienic for consumption at any time. There should be proper space or be disjoining between the grain sacks for fumigation and regular inspection of the grains The grains are stored in mass scale in huge chambers called silos. the silos have a proper outlet to withdraw the desired quantity of grains.The silos have built-in arrangements for aeration, fumigation, protection from rodents, insects and bird etc. Thus all three options strict cleaning, proper disjoining and fumigation is equally important for the storage of grains.

Therefore, the correct answer is option D.

Multiple choice evs - i food for all improved methods of agriculture receding water table water conservation and irrigation cropping patterns whose forests?

Freshly harvested grains must be dried before storing because

  1. It contains moistures.

  2. It contains insects.

  3. It contains active enzymes.

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

If the freshly harvested grains are not dried, it might contain moisture and moisture provide growth media for various organisms like molds. Drying will delay the spoilage of the grains.
Thus, the correct answer is option A.

Multiple choice organisation of commerce and management marketing mix branding and packaging marketing marketing management

Airtight containers and packets used for chips, biscuits and jams etc., are the example of ______________.

  1. Product identification

  2. Product promotion

  3. Product Protection

  4. Product differentiation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Protective packaging products are designed and constructed to protect the goods from atmospheric, magnetic, electrostatic, vibration or shock damage. Products include types of boxes or storage containers, packing materials, liners, and spacers.

Multiple choice organisation of commerce and management marketing mix branding and packaging marketing marketing management

_______ refers to an additional layer of protection that are kept till the product is ready to use.

  1. Protection packaging

  2. Primary packaging

  3. Transportation packaging

  4. Secondary packaging
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Product packaging is the process of designing, evaluating and designing packages that protect the products from spoilage, helps in easy transportation and also provide information about the product to consumers.

 Secondary packaging is the additional packaging given to a product to protect it.

Multiple choice chemistry reactivity series and electrochemistry reactivity series and displacement reactions chemical properties of metals chemical properties of metals and non metals

In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of:

  1. $Cl _2$
  2. $H _2$
  3. $N _2$
  4. $O _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of $N _2$ to prevent from being rancid or oxidised. 
Nitrogen is added to the potato chip packet to add strength to the packaging. Normally aluminium cans are used for packaging beverages, these beverages are carbonated drinks and the carbon dioxide present in them provides the internal pressure in the can and thus gives internal strength to the aluminium can. But in non-carbonated drinks, there is no carbon dioxide present and so Nitrogen is added to it to give the required strength to the packing.

Multiple choice biology improvement in food resources improved methods of agriculture cropping patterns food for all

Identify the advantage of proper storage.

  1. The quality of food is ensured for a longer time.

  2. The variety of food may be available in far places.

  3. The food poisoning is prevented.

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Proper storage of food helps in maintaining food quality by retaining flavor, colour, texture and nutrients, while reducing the chance of contracting a food-borne illness. It has various advantages as the quality of food remain intact therefore it can be used for longer time, it can be made available at far places where such food is not harvested and since it remains unaffected by microbes, food poisoning can be prevented.
So, the correct answer is option D.
Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

The interior of a cow-dung pile kept for a few days is quite warm. This is mostly because

  1. Cellulose present in the dung is a good insulator .

  2. Bacterial metabolism inside the dung releases heat.

  3. Undigested material releases heat due to oxidation by air.

  4. Dung is dark and absorbs a lot of heat.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

At the later stages of decomposition of cowdung, mesophilic micro-organisms decompose the dung, generating heat from exothermic( process which produces heat) processes; such heat generation is associated with the well known phenomenon of the elevated temperature of composting.

Multiple choice chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

Why plastic containers are favoured for storing food?

  1. Plastics are light in weight

  2. Plastic is a strong and durable material

  3. Plastics are easy to handle

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plastics are used to store food because:
(i) Plastics are light in weight.
(ii) Plastic is a strong and durable material and
(iii) plastics are easy to handle.

Multiple choice physics spectra the electromagnetic spectrum electromagnetic spectrum electromagnetic waves

UV Rays are useful for 

  1. Sterilizing purposes

  2. Detecting purity of gems, ghee, etc

  3. Producing Vitamin D in food of plants and animals

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the options are uses of UV Radiations. 

It can sterilize many substances. Most important application is water sterilization which is used in modern water purifiers.
Fluorescence tests in Ruby and Sapphire allows detecting purity of gems.
Some components of UV light plays key role in Vit D synthesis.

Multiple choice biology animal behaviour ethology natural selection coordination in human beings- chemical control endocrine system in humans

Breast milk at room temperature can be stored for

  1. 4 hrs

  2. 8 hrs

  3. 12 hrs

  4. 24 hrs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Colostrum is a milky fluid that comes from the breasts of humans, cows, and other mammals the first few days after giving birth, before true milk appears. It contains proteins, carbohydrates, fats, vitamins, minerals and proteins (antibodies) that fight disease-causing agents such as bacteria and viruses. Antibody levels in colostrums can be 100 times higher than levels in regular cow’s milk.

 Secretin is a peptide hormone that regulates water homeostasis throughout the body, and influences the environment of the duodenum. 
Rennin is also called as chymosin, protein-digesting enzyme that curdles milk by transforming caseinogen into insoluble casein. 
Serotonin or 5-hydroxytryptamine is a monoamine neurotransmitter. 
Therefore, the correct answer is option B.

Multiple choice evs science of kitchen balanced diet and malnutrition assimilation of food components and importance of food assimilation of food and egestion busy at work - our internal organs

Diarrhea through food can be avoided by

  1. Eating raw food

  2. Refrigerating the food

  3. Thawing of food again and again

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Serve food right away or refrigerate it after it has been cooked or reheated. Leaving food out at room temperature can encourage growth of bacteria. Wash work surfaces frequently to avoid spreading germs from one food item to another. Use the refrigerator to thaw frozen items or try putting plastic-wrapped frozen items in a bowl of cold water to thaw. 

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

When milk is heated at 62$^o$C for 30 minute and then cooled, the process is called as

  1. Sterilization

  2. Pasteurization

  3. Nitrification

  4. Freezing
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sterilization refers to a technique that makes the desired material/medium/object completely free from all life forms including microbial spores and viruses. It is done by number of methods like boiling, incineration, pasteurization, hot air sterilization etc. Option A is incorrect. Pasteurization is technique wherein heat is applied to liquids (milk, beverages and dairy products) to kill potential agents of infection and spoilage while retaining the flavour and food value. It includes exposure of the liquid to 71.6°C for 15 seconds (flash method) or to 63°–66°C for 30 minutes (batch method) followed by its cooling. Option B is correct. The conversion of ammonia into nitrates is termed as nitrification and is carried out by chemolithotrophic bacteria; Nitrosomonas and Nitrobacter. Freezing refers to maintenance of bacteria under very low temperature that kill fractions of them but the survivors are maintained as dormants for longer periods as they show no metabolic activity; option D is incorrect. Thus, the correct answer is option B. 

Multiple choice botany bacteria bacteria - friend and foe useful and harmful bacteria bacteria; benefits and harmful effects

In bacterial$/$ tissue culture, glassware and nutrients are sterilized through

  1. Water bath at $200^o$C
  2. Dry air oven at $200^o$C

  3. Dehumidifier

  4. Autoclave
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sterilization by autoclaving is carried out to kill bacteria and other pathogens present in the nutrients, equipment, and materials. In bacterial/ tissue culture, glassware and nutrients are sterilized through autoclave. In this, a pressurized steam is applied with the heat of 121$^0$C for around 15–20 minutes to kill bacteria, spores, and other pathogens.

Thus, the correct answer is 'Autoclave.'

Multiple choice organization of commerce and management warehousing importance, types and documentation in warehousing meaning of warehousing and warehousing introduction to services

Which among the following gives an idea that the goods preserved are perishable?

  1. Cold storage helps to maintain the quality of goods.

  2. It helps to widen the market.

  3. It saves time by providing the goods as and when required.

  4. Processed goods can be graded, packed, and labeled.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cold storage helps to maintain the quality of goods gives an idea that the goods preserved are perishable. Cold storage is useful as it helps to store perishable goods for a period of time. Cold storage is crucial as it helps to prolong thhe shelf life of fresh goods.