1.
Biological Oxygen Demand (BOD) is used as a
standard measure of________.
a.
Oxygen level in forest system
b.
Oxygen level in animals
c. Oxygen level in water system
d.
Oxygen level in atmosphere
2.
Which of the following is not a natural fiber:
a.
Jute
b.
Coir
c.
Silk
d.
Rayon
3.
Which of the following is a water-borne disease?
a.
AIDS
b.
Dengue
c.
Influenza
d. Cholera
4.
Cooking oil can be converted into vegetable ghee
by the process of :
a.
Oxidation
b.
Crystallization
c. Hydrogenation
d.
Vacuum Freezing
5.
The vitamin that is most readily manufactured in
our bodies is:
a.
Vitamin A
b.
Vitamin B
c.
Vitamin C
d.
Vitamin D
6.
Which of the following metals occurs in free
state?
a. Copper
b.
Gold
c.
Zinc
d.
Lead
7.
Which of the following is a chemical change?
a. Rusting of iron
b.
Tempering of iron
c.
Melting of iron
d.
Bending of Iron
8.
Antibiotics are the drugs used for the cure of:
a. Bacterial disease
b.
AIDS
c.
Cancer
d.
Nervous Disorders
9.
The element common to all acids is:
a.
Oxygen
b.
Sulphur
c.
Nitrogen
d. Hydrogen
10.
Tetra-ethyl lead is used as:
a.
Mosquito repellent
b.
Pain killer
c.
Fire Extinguisher
d. Petrol additive