A. iron oxide
B. a kind of moss
C. corrosive quality of damp air
D. the natural wearing of iron
A. poor conductors of heat
B. good conductors of heat
C. worst conductors of heat
D. perfect insulators
A. volume of the buildings
B. area of hill
C. height of an object
D. breadth of a tower
A. Air
B. Water
C. Steel rod
D. Kerosene
A. drops
B. rises
C. remains constant
D. becomes unpredictable
A. Newton’s Second Law of Motion
B. Newton’s Third Law of Motion
C. Newton’s First Law of Motion
D. None of above
A. exactly roundish
B. elliptical
C. roundish but uneven
D. cicok-wise during day and anti-clockwise
A. one-eighth that of earth
B. one-sixth that of earth
C. one-tenth that of earth
D. one-fourth that of earth
A. thermal energies
B. specific heats
C. temperatures
D. heat capacities
A. a large convex lens with short focal length
B. a large convex lens with long focal length
C. a large concave lens with a short focal length
D. None of above