Science – Page 4 – Multiple Choice Questions

Here, we will discuss the Methods of Cooking and Food Preservation. Varieties of foods are available for varieties of creatures on Earth. Different types of animals eat foods in a different way. Cow, goat eat raw vegetables but human beings can’t digest raw vegetables. Some vegetables like cucumber, onion, tomato, etc can be eaten as raw but some raw vegetables which are hard to digest for human beings are required to be cooked. Cereals and pulses are also can’t be eaten as raw. After boiling the cereals and pulses, it becomes soft and easy to digest for human beings whereas birds can eat cereals and pulses as raw. While cooking the vegetables, ginger, garlic, turmeric powder, salt, etc are used as a spice which helps in increasing the test of the foods. Advantages of eating cooked foods There are some advantages of eating the cooked foods: It becomes soft and people can easily digest it. is free of germs. is testy. Several methods of cooking There are several methods of cooking: Boiling Steaming Frying Baking Roasting Food Preservation Many foods are coming from far distances. Some foods are available here easily but some are not due to the environment. Hence, it becomes necessary to bring that food from other locations. For this, it takes 2-3 days' time to get that food. In 2-3 days, that food may begin to spoil. Hence, to keep the food edible condition the preservation of food is very essential. The presence of bacteria, yeasts, molds in the surrounding that causes the food spoiled need to be removed from the food. Reason for being spoiled of the food Reason for being spoiled of the food are: Contamination by microorganisms, insectsDegradation by endogenous enzymesOxidation of some constituents of foods Food spoilage occurs due to the presence of bacteria and fungi which are one type of microorganism and it causes food-borne illness. Bacteria Different types of bacterias grow at different temperatures. Depending on temperatures, bacterias are divided into three categories- thermophiles, mesophiles, and psychrotrophic. Here, the amount of pH by which the acidity level of water is measured plays an important role. Generally, a neutral environment (pH=7) is responsible for the growth of bacterias. In the presence of water, bacteria grows very fast. The availability of water is termed as Water activity. Water activity =(Vapor pressure at the food/ vapour pressure of pure water) at a specific temperature. Its value lies between 0 and 1. The absence of water is denoted by water activity as zero and the presence of it is denoted by water activity as one. Water activity above 0.9 is suitable for the growth of bacterias. Fungi Yeast and molds which are also responsible for the spoilage of food are the two types of fungi. The acidic environment (PH<7) helps fungi to grow. A water activity of more than 9 is also required for the fungi so that it can grow like bacterias. If we can apply heat or remove water from the food, food will be safe from bacteria and fungi and thus it will refrain from the spoilage which we can use for a few days. Different ways of preserving the food: All the above factors compel us to preserve the food. There are different ways of preserving food and they are: DryingRefrigeration (Reducing the temperature of the food)Freezing (Lowering the temperature below 0 degrees C.)FermentationCanning (Storing the food in an airtight container)Pasteurization (Applying heat to kill the microorganisms)IrradiationAddition of chemicals Bacteria can’t grow without the presence of water. We should dry the pulses and cereals before preserving them as sunlight kills the germs. If there are insects within the rice, the rice should be kept in front of the sunlight. Multiple-Choice Questions or Objective Type Questions on the Methods of Cooking and Food Preservation Here are some Oral Questions on Cooking and Food Preservation for you: 210 Created on October 09, 2020 By tanusri.kar.sen MCQ on Methods of Cooking and Preserving food 1 / 20 Refrigeration process is used for preserving food. It is a process by which temperature is increased decreased not changed 2 / 20 The value of water activity lies in between 1 and 5 1 and 10 1 and 0 3 / 20 Water activity is Vapor pressure at the food/ vapor pressure of pure water at a specific temperature vapor pressure of pure water/Vapor pressure at the food at a specific temperature always one 4 / 20 The ____________environment help Fungi to grow. Acidic Alkalic none of these 5 / 20 Yeast and molds are Bacteria Fungi Viruses 6 / 20 Doctors prescribe ___________food. Spice Boiled Roasted 7 / 20 The following are used as preservatives Lemon Vinegar Tomato 8 / 20 How many days of milk can be preserved by using the boiling method 20-30 days 2-3 days 2-3 months 9 / 20 Milk can be preserved by Oiling Cooking Boiling 10 / 20 Papad can be eaten after Baking Roasting Boiling 11 / 20 Pulses are cooked by Boiling Roasting Baking 12 / 20 We should eat fruits immediately after Cutting Washing Cooking 13 / 20 Canning is the process which makes food Rotton Preserved None of these 14 / 20 Which one of the following preserves foods by creating a hostile environment for certain microorganisms Acid Salt Turmeric powder 15 / 20 Pickling, preserving food prevents undesirable growth of Virus Fungai Bacteria 16 / 20 Pickling is the preserving food in a/an Gas Acid None of these 17 / 20 Which of the following is used to cook food by using the Roasting method Cold air Hot air Hot water 18 / 20 Which food is cooked in a Pressure cooker Puri Papad Idli 19 / 20 In which method, a pressure cooker is used Steaming Roasting Baking 20 / 20 In which method, the heat of the steam is used for cooking the food? Boiling Steaming Baking Your score isThe average score is 48% LinkedIn Facebook Twitter VKontakte 0% Restart quiz The multiple-choice questions mentioned here are the basic questions from the chapter -"methods of cooking and food preservation" which will help you if you are a student of class five. Students may consider this as a test of 20 marks. After completion of the test, they can check the answers by themselves and can come to know how much they are prepared. I hope that the MCQ Questions on The Methods of Cooking and Food Preservation will help you in achieving high scores in your exams.