Chemistry of Life - Chapter No 18
Right Answers have been shown below in red color.
1. The group of chemical substances which take part in the life-sustaining processes and gives us energy, is called __________.
a) Food
b) Energy
c) Catalyst
d) Minerals
2. The components of food which deals with different functions, are called __________.
a) Carbohydrates
b) Nutrients
c) Starch
d) None of these
3. Fats, minerals and water, are all called __________.
a) Food
b) Material
c) Nutrients
d) None of these
4. Digestion is a process in which non-diffusible organic molecules are changed into__________ smaller molecules.
a) Proteins
b) Fats
c) Vitamins
d) Diffusible
5. For vital processes, the__________ is the most important source of energy.
a) Maltose
b) Carbohydrate
c) Complex
d) Sugar
6. The formula for glucose is __________.
a) Cِ6H12O6
b) CO2
c) CH2OH
d) C15H31
7. For all living cells, the protein is an important __________.
a) Polymer
b) Constituent
c) Fat
d) None of these
8. The hydrates of carbon, are called __________.
a) Amino acids
b) Carbohydrates
c) Proteins
d) Polysaccharides
9. The general formula for carbohydrates, is__________.
a) C6H12O6
b) CnH2n+2
c) Cx(H2O)y
d) None of these
a) C6H12O6 + 6O2
b) C6H6O6 + 6H2O
c) C6H12O6 + 𐤃H
d) C6H6O6 + 𐤃H
11. There are __________ main types of carbohydrates.
a) Five
b) Three
c) Two
d) Four
12. Monosaccharides are the __________ carbohydrates.
a) Simplest
b) Complex
c) Equal
d) None of these
13. Aldoses are those carbohydrates which contain __________ functional group.
a) Ketonic
b) Simple
c) Aldehydic
d) None of these
14. The carbohydrates containing __________ functional group, are called ketoses.
a) Ketonic
b) Aldehydic
c) Ketosis
d) Complex
15. Glucose is an example of __________.
a) Fructose
b) Aldoses
c) Ketoses
d) Protein
16. Fructose is an example of __________.
a) Ketoses
b) Aldoses
c) Sunlight
d) Protein
17. The glucose produces __________ for our body.
a) Starch
b) Amylose
c) Energy
d) None of these
18. Polysaccharides are partially __________ in water.
a) Soluble
b) Insoluble
c) Difference
d) None 0f these
19. We can get vitamin-A from __________.
a) Cow and fish
b) Milk and fish.
c) Cow and tomatoes
d) None of these
20. We can get vitamin-D from __________.
a) Meat and fish
b) Meat and tomatoes
c) Glucose and fish
d) Glucose and tomatoes
