Options:
- A. 280,000 km/s
- B. 300,000 km/s
- C. 320,000 km/s
- D. none of these
View Answer
B. 300,000 km/s
Everyday Science
Short-sight defect could be corrected by a _____________ lens?
Options:
- A. concave lens
- B. convex lens
- C. converging lens
- D. none of these
View Answer
A. concave lens
The Shortest (smallest) bone in human body is___________?
Options:
- A. Stapes
- B. Tibia
- C. Femur
- D. Humerus
View Answer
A. Stapes
In a typical H-R diagram, stars are graphed by these two characteristics:
Options:
- A. Temperature and luminosity
- B. Luminosity and distance
- C. Distance and temperature
- D. Size and distance
View Answer
A. Temperature and luminosity
Water is a universal solvent for what reactions?
Options:
- A. Chemical
- B. Biochemical
- C. Physical
- D. Nuclear
View Answer
B. Biochemical
One of the following ways of expressing the concentration of a solution does not depend on temperature. It is__________?
Options:
- A. Molarity
- B. Molality
- C. Normality
- D. Formality
View Answer
Molality
The strength of wave action depends on all these EXCEPT:
Options:
- A. Currents in the sea
- B. Wind strength
- C. Depth of coastal water
- D. Height of waves
View Answer
A. Currents in the sea
The ratio of pure gold in 18 carat gold is _______________?
Options:
- A. 0.5
- B. 0.9
- C. 0.8.5
- D. 0.75
View Answer
D. 0.75
Evaporation from ice and snow is known as___________?
Options:
- A. evaporation
- B. sublimation
- C. hydrogenation
- D. insolation
View Answer
B. sublimation
Hydrogen peroxide (H2O2)______________?
Options:
- A. helps line up cell proteins
- B. is poisonous to tissues
- C. is often needed as a catalyst
- D. aids in oxidation of glucose
View Answer
B. is poisonous to tissues