A. Edward Jenner
B. Joseph Lister
C. William Harvey
D. Gregor Mendel
Which of the following chemicals is not found in tobacco smoke?
A. Chlorine bleach
B. Rocket fuel
C. Nail polish remover
D. Barbecue lighter fluid
Second ionization energy:
A. is always less than first ionization energy
B. is always greater than first ionization energy
C. is equal to the first ionization energy
D. may be greater or less than the first ionization energy depending on the nature of the element
The phases of the moon are partially the result of the____________?
A. Changes in the shape of the moon
B. Revolution of the moon around the earth
C. Variations in the moon’s gravitation
D. Variations in the speed of rotation of the moon
The most brightest planet amongst the eight planets?
A. Mercury
B. Jupiter
C. Venus
D. Neptune
A. DNA only
B. DNA and RNA
C. Proteins only
D. DNA and Proteins