581. Ozone layer protects the Earth from __________ radiations from the Sun.
582. The only living cells in the body without blood supply is___________?
583. Liver uses which vitamin for creating new Red Blood cells?
584. Mohs’ Scale” is used to indicate the_________?
A. Degree of hardness of minerals
B. Degree of viscosity of a liquid
C. Degree of elasticity of a material
D. Degree of brittleness of a substance
585. Being Myopic means you have problem in seeing ______________?
A. Distant objects clearly
B. Close objects clearly
C. Both A and B
D. Distant and close objects look unclear
586. Hypermetropia or Hyperopia means being able to see__________________?
A. Distant objects opaque
B. Distant object clearly
C. Close objects unclear
D. Close objects clearly
587. Instrument that measure the electric force ________?
588. Silicon is an example of _________?
C. Super Conductor
D. None of these
589. According to quantum theory of light, photons are _______?
C. Energy packets
590. The unit of torque in International system of unit is _________?