The repetition of property after a certain period of time called ___________?
A. Electron affinity
B. periodicity of property
C. Atomic radius
D. None of these
In short sightedness which lens is used?
A. Convex lens
B. Concave lens
C. Converging lens
D. None of these
What is the angle of rainbow over horizon?
A. 60 degrees
B. 90 degrees
C. 30 degrees
D. 40 degrees
The study related with cancer is known as ______.
A. Zoology
B. Ecology
C. Oncology
D. Genomic
Which of the following vitamin is obtained from sunlight?
A. vitamin D
B. vitamin C
C. vitamin K
D. vitamin E
The study of teeth scientifically is known as _______.
A. Pedagogy
B. Ornithology
C. Orthoepy
D. Odontology
The blood which goes to heart from lungs is _____.
A. Atria blood
B. Lymph fluid
C. Deoxygenated blood
D. Oxygenated blood
The present stage of Sun is called _____.
A. White dwarf
B. Yellow dwarf
C. Red giant
D. Orange dwarf
Which one is called laughing gas.
A. Nitric oxide
B. Nitrous oxide
C. Nitrogen pentoxide
D. Nitrogen dioxide
Wood is used to make _______.
A. Paper
B. Ink
C. Paint
D. Gun powder