[Answer] 5. Traveling around Chad, we encounter several different languages and dialects as we meet the people living there. With all those different languages that are spoken there, do you know the two official languages of Chad?

Step 1 : Introduction to the question "5. Traveling around Chad, we encounter several different languages and dialects as we meet the people living there. With all those different languages that are spoken there, do you know the two official languages of Chad?"

...1. French and English 2. Swahili and French 3. English and Arabic 4. French and Arabic There are more than 100 different languages spoken in the country of Chad, but only French and Arabic are recognized as the official languages, with French being the dominant language used in education and in the government. Even with all those different languages spoken, most of them come from either the Nilo-Saharan or Afro-Asiatic families of languages.

[Answer] 5. In a salt shaker, you may encounter a few grains of rice. What is the rice there for?

Step 1 : Introduction to the question "5. In a salt shaker, you may encounter a few grains of rice. What is the rice there for?"

...1. To absorb moisture 2. To slow down the flow of salt through the holes in the lid 3. To enhance the flavour 4. To kill salt-weevils There is nothing more frustrating than finding a salt shaker with the contents bound into a solid lump. The rice attracts any moisture in the air, and allows the salt to flow freely. As fas as I am aware, there is no such thing as a salt-weevil.

[Answer] 2. A group of organic molecules that we encounter regularly in our food is carbohydrates. Which of these elements is NOT found in a carbohydrate molecule?

Step 1 : Introduction to the question "2. A group of organic molecules that we encounter regularly in our food is carbohydrates. Which of these elements is NOT found in a carbohydrate molecule?"

...1. Carbon 2. Oxygen 3. Hydrogen 4. Nitrogen Carbohydrates contain carbon, hydrogen and oxygen. They usually have twice as many hydrogen atoms as carbon atoms, the same ratio as is found in water, which is the source of the -hydrate part of their name. For a chemist, carbohydrates include not only the large molecules that dieticians usually mean when they use the term, but also small molecules such as the monosaccharide glucose (blood sugar) and the disaccharide sucrose (table sugar).