Range of temperature for life…………
a) 10°C to 45°C
b) 15°C to 30°C
c) 37°C to 40°C
d) none of these
Enzymes and proteins denature at temperature of…………….
a) 10°C
b) 20°C
c) above 40°C
d) 21°C
Atmosphere present.……….earth.
a) in center
b) in surrounding
c) in pole
d) in outer
Atmosphere contain.………nitrogen
a) 21%
b) 78%
c) 0.04%
d) 3%
Atmosphere contains………oxygen
a) 78%
b) 21%
c) 0.04%
d) 70%
Atmosphere contain ……carbon dioxide
a) 0.04%
b) 21%
c) 78%
d) 0.05%
