Class 6 Science Chapter 1 MCQ

Food is a nutritious diet that organisms consume or absorb to maintain their various functions of life and development. And “nutrition” is the process by which our body takes in in food and uses it for growth and development while “ingredients” contain some components that are needed by our body. These components are called “Nutrients”.

An iodine solution is used to test the presence of starch in our food. Carbohydrates found in our food are in the form of starch and sugars. A dilute solution of iodine can be prepared by adding a few drops of tincture iodine to a test tube half filled with water.

Generally, as a deficiency disease “Vitamin-A” creates – loss of vision or poor vision, loss of vision in darkness (night), sometimes complete loss of vision.

Spinach is a good source of the mineral “Iron”. Whereas, we got calcium and phosphorus from milk and milk products. The chemical name of salt is “sodium chloride”.

If some thought that fats contains food would be the best foods to eat, all the time. It can be very harmful for everybody because to eat too much of fat rich foods, we may end up suffering from condition called obesity.

Copper sulphate solution and caustic soda solution are used to test the presence of protein while iodine solution is used for starch test.

Presence of fat can be seen when we take a small quantity of a food item. Wrapped it, in a piece of paper and crush it. Oily patches show the presence of fat.

Deficiency disease is a disease which arises due to the lack of nutrients in our diet over a long period of time, e.g. Scurvy, Kwashiorkor. To prevent these diseases, it is essential to have a balance diet. It is a diet, which contains adequate amounts of all the nutrients as well as sufficient quantity of water and roughage.

A deficiency disease “goiter” which is caused due to the lack of iodine in our body. The symptoms are swollen glands in neck and mental disability found in adult as well as children.

A deficiency disease “rickets” which is caused due to the lack of “vitamin-D” in our body. In this case, bones become soft and bent, unable to stand and walk and body appears very thin.

Proteins are needed for the growth and repair of our body. Carbohydrates and fats mainly provide energy to our body. Vitamins help in protecting our body against diseases and also help in keeping our eyes, bones, teeth and gums healthy.

Carbohydrates and fats mainly provide energy to our body. Therefore, fats and carbohydrates are called energy giving foods. Proteins are needed for the growth and repair of our body. Therefore, they are often called body building foods. Whereas, the vitamins help in protecting our body against diseases. And for the proper growth of body and to maintain good health, minerals are needed to our body.

There are some components which contain some ingredients (e.g. carbohydrates, proteins, fats, vitamins and minerals) that are needed by our body. These components are called nutrients. Roughage does not provide any nutrient to our body, it helps our body get rid of undigested food. Vitamin helps in protecting against diseases and minerals assist in proper functioning, normal growth and good health.

Egg is a rich source of protein, the mineral as calcium and vitamin-D, vitamin-B12. But egg yolk is rich in “fat” and egg albumin is rich in “protein”.

Vitamin C is not present in milk. It is present in citrus fruits such as oranges and green vegetables.

Dietary fibres are not present in milk while whole grains, whole pulses, fruits and vegetables are the sources of dietary fibre.

A deficiency disease Scurvy which is caused due to the lack of “vitamin-C” in our body. In this case, wounds take longer time to heal and bleeding can be seen in gums.

By taking excessive amount of fat contains food, may be a chance of obesity. Obesity is a medical condition in which excess body fat has accumulated to the extent that it may have an adverse effect on health. Such as, Cardiovascular diseases.

Copper sulphate solution and caustic soda solution are used to test the presence of protein while iodine solution is used for starch test. And presence of fat can be seen when we take a small quantity of a food item. Wrapped it, in a piece of paper and crush it. Oily patches show the presence of fat.

The presence of proteins in a food material is tested on the basis of a reaction between proteins and alkaline solution of copper sulphate, that gives a violet colour. The test involves the following steps in sequences: II, I, IV, III.

Carbohydrates mainly provide energy to our body. Fats also give us energy. In fact, fats give much more energy as compared to the same amount of carbohydrates.

The Vitamin-C rich fruit is great for our immunity, heart, skin and hair. Amla or the Indian gooseberry is a fruit which is popular for its many health benefits.

Dehydration is when someone loses more fluids than he or she takes in. Dehydration, symptoms are: dry mouth, lethargy, weakness in muscles, headache, dizziness. Drinking water, oral rehydration solution (ORS) or sports drinks to replace lost fluids may help prevent dehydration. Finding a place to cool down may also help.

Fast food like potato chips, pizza, burger, etc. are very good in taste and they contain huge amount of Fat. And fried food like samosa and poori, malai, rabdi and peda also contains fat.

“Vitamins” help in protecting against many diseases. These are also necessary for good eyesight (vitamin-A), growth (Vitamin-B1), keeping teeth gums and joints healthy (Vitamin-C) and the normal growth of bones and teeth (Vitamin-D)