Tag: food spoilage, adulteration and preservation

Questions Related to food spoilage, adulteration and preservation

The undesirable change in a food that makes it unsafe for human consumption is referred as

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Food decay

  2. Food spoilage

  3. Food loss

  4. All of the above

Show answer
Correct Option: B
Explanation:

Food spoilage is the decrease in the original nutritional value, texture and flavor of the food. Such food becomes harmful and unsuitable for human consumption. This can happen due to bacterial or fungal action if food is left open for a long time. In uncooked food, autolysis may take place in which food is decomposed by self-enzymes. Food spoilage can be prevented by adding preservatives. Thus, the correct answer is option B.

Common food poisoning microbes are

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Clostridium and Salmonella

  2. Clostridium and E.coli

  3. E.coli and Streptococcus

  4. Clostridium and Streptococcus

Show answer
Correct Option: B
Explanation:

the correct answer is 'Clostridium and E.coli'

Food poisoining occurs usually due to the toxin of E.coli and is a mild form. Sometimes, a severe and fatal form of food poisoning occurs due the toxin of Clostridium botulinum .
Salmonella causes typhoid.
streptococcus infections usually cause upper-respiratory tract infections.

Which one of these foods is likely to contain the most bacteria?

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Cooked chicken

  2. Tinned cream

  3. Frozen raw chicken

  4. Bottled mayonnaise

Show answer
Correct Option: C
Explanation:

frozen raw chicken contains the most bacteria even though it is frozen the bacteria does not die their growth is stopped but the bacteria is still present where as in the cooked chicken it is killed and in tinned cream and mayonnaise they are processed.

So, the correct answer is 'Frozen raw chicken'

Food poisoning bacteria will multiply readily between

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. -18$^o$C- 0$^o$C

  2. 0$^o$C- 5$^o$C

  3. 5$^o$C- 63$^o$C

  4. 63$^o$C- 90$^o$C

Show answer
Correct Option: C
Explanation:

even though the food poisoning bacteria grow at the temperature of 37 degree centigrade they start multiplying readily at approximate temperature between 5 to 63 degree centigrade.

So, the correct answer is '5$^0$ - 63$^0$

Food contaminated with food poisoning bacteria would

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Smell

  2. Change colour

  3. Look normal

  4. Be slimy and bitter

Show answer
Correct Option: C
Explanation:

The food containing food poisoning bacteria does not change colour, taste, and smell of the food hence it cannot be recognized by the senses and the food looks normal

So, the correct answer is 'Look normal'

Which one of these statements about bacteria is true?

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. All types of bacteria give food poisoning.

  2. Freezing makes food last longer by killing bacteria.

  3. Bacteria grow fastest when they are warm.

  4. All bacteria need air to survive.

Show answer
Correct Option: C
Explanation:
 At 37°C bacteria start growing but start multiply between 5°C and 63°C.
 at room temperature, if the food is left out for any more than two hours. bacterial growth will be rapid. all types of bacteria won't give food poisoning.
Freezing does not kill bacteria only their growth stops. 
Some bacteria can survive even without air like in food gravy and sauces.
So, the correct answer is 'Bacteria grow fastest when they are warm'

Food poisoning only occurs because of bad practice in

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Restaurants

  2. Retail shops

  3. Home or domestic kitchens

  4. All of the above

Show answer
Correct Option: D
Explanation:

the correct answer is 'all of the above'

food poisoning occurs due to bad food handling at all the places where it is prepared or stored like restaurants,retail shops, home or domestic kitchens etc. It occurs due to contamination of food with toxin of E.coli or C.botulinum.

The disease caused due to the presence of large number of microorganisms in the food is called as 

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Food poisoning

  2. Food preservation

  3. Typhoid

  4. Chlolera

Show answer
Correct Option: A
Explanation:

The disease caused due to the presence of a large number of micro-organisms in the food or due to the presence of toxic substances in food formed by the action of microorganisms is called as food poisoning.

___________ makes the availability of food materials throughout the years.

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Storage at Low temperature

  2. Highly active enzymes

  3. Over production

  4. All of the above

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Correct Option: A
Explanation:

Storing food products at low temperature reduces the enzyme activity. Due to this the food could be stored for longer period of time and making it available throughout the year.

Heating milk at $65^{0}$ followed by sudden cooling is Known as ______________.

evs eat when you need food poisoning and food preservation methods food spoilage, adulteration and preservation food spoilage and adulteration

  1. Sterilization

  2. Preservation

  3. Pasteurization

  4. Fermentation

Show answer
Correct Option: C