Q and A
1. ____________ is used to increase the yield of a crop.
2. Food items like pickles and jellies are protected from bacteria by using
___________.
3. Water pipes are made up of ____________.
4. ____________ chemistry deals with the study of carbon compounds.
5. The elements present in talc are ____________, ____________ and
___________.
6. Medicine which helps to control the body temperature is known as
____________.
7. _______________ is the type of plastic which can be remoulded.
1. Chemistry is a branch of science which deals with:
a. Study of plants
b. Study of stars and planets
c. Study of composition of matters
d. Study of economy of a country
2. Medicine like penicillin and tetracycline is used as:
a. Analgesic
b. Antipyretic
c. Antacid
d. Antibiotic
3. ____________ is a natural fibre.
a. Rayon
b. Cotton
c. Terylene
d. Nylon
4. The branch of chemistry which deals with physiological reactions is:
a. Inorganic chemistry
b. Organic chemistry
c. Biochemistry
d. Analytical chemistry