821. Chemically finger nails are made up of ____________?
A. Carbohydrate
B. Fats
C. protein
D. Starch
822. “COTTON” is grown on ___________?
A. Black soil
B. Red Soil
C. Regur Soil
D. Alluvial Sea
823. Very small time intervals are accurately measured by the___________?
A. Pabsars
B. White dwarfs
C. Atomic Clocks
D. None of these
824. Who invented the Hot Air Balloon?
A. Davy
B. Montgolfier
C. Edison
D. Jarvik
825. Which of the following is a ferromagnetic material ?
A. Tungsten
B. Aluminium
C. Copper
D. Nickel
826. What are the primary colors of Light?
A. White, Black, Blue
B. Red, Yellow, Blue
C. Red, Orange, Blue
D. Red, Green, Blue
827. What are the primary colors of Pigment?
A. White, Black, Blue
B. Red, Yellow, Blue
C. Red, Orange, Blue
D. Red, Green, Blue
828. Who first measured the velocity of light?
A. Einstein
B. Newton
C. Ole Roemer
D. Galileo
829. In which part of the Plant does photosynthesis take place?
A. Flowers
B. Roots
C. Stem
D. Leaves
830. Which of the following is affected by rickets in the human body?
A. Bones
B. Tissues
C. Muscles
D. Blood