A blood alcohol level above ________ will often result in death:
A blood alcohol level above ________ will often result in death:
A. 0.10
B. 0.20
C. 0.30
D. 0.41
A. 0.10
B. 0.20
C. 0.30
D. 0.41
A. Nitrogen
B. Hydrogen
C. Helium
D. Oxygen
Long-sight defect could be corrected by using __________ lens?
A. concave
B. Convex
C. diverging
D. none of these
ALSO CHECK: Short-sight defect could be corrected by a _____________ lens?
A. The earth’s atmosphere
B. Interstellar dust
C. both A and B
D. None of these
Rate of evaporation of petrol is greater than that of water at room temperature because:
A. petrol molecules do not have any hydrogen bond
B. petrol is an organic compound
C. water molecules have small size
D. petrol molecules have greater size
A. Reflection
B. Total internal reflection
C. Refraction
D. None of these