| 1 |
The humna circulatory system is consist of |
- A. Heart
- B. Blood
- C. Blood vessels
- D. All of these
|
| 2 |
Billins of new blood cells are produced daily in |
- A. Heart
- B. Lever
- C. Spleen
- D. Bone -marrow
|
| 3 |
Growth of microorganisms canbe controlled by |
- A. Dehydration
- B. Drying
- C. Adding preservative
- D. a,b,c all
|
| 4 |
A pigment in the skin that protcts harmful effects of sunlight. |
- A. Haemoglobin
- B. Melanin
- C. Lysozyme
- D. Lymphocyte
|
| 5 |
Aerobic respiation takes place in. |
- A. Mitochondria
- B. Chloroplast
- C. Nucleus
- D. Blood vessels
|
| 6 |
The temerature o boiling water in centigrade scale is. |
- A. 0 oC
- B. 32 oC
- C. 37 oC
- D. 100 oC
|
| 7 |
Centigade scale is also called |
- A. Fehrenheti scale
- B. Fake scale
- C. Absolute scale
- D. Celsius scale
|
| 8 |
Silver+ hydrogen suolphide+Oxygen--------------- Silver sulphide + water The above reaction is known as. |
- A. Combustion
- B. Rusting
- C. Tarmishing
- D. Dehydration
|
| 9 |
The negetively charged particle arod nucleus are called. |
- A. Electron
- B. Proton
- C. Atom
- D. Neutron
|
| 10 |
The opening of air passage in the laryanx is called. |
- A. Trachea
- B. Bronchi
- C. Glottis
- D. Alveoli
|