jeans by:
Leonard Goodall
Jacob Davis
George Heilmeier
Assyrians
button invented at :
US
UK
Greece
MEXICO
Which one of the following is known as "Biological Blueprint"?
Mitochondria
RNA
Cell
DNA
airplane by:
Wilbur & Orville Wright
Valdemar Poulsen
Fritz Pfleumer
Earle Dickson
atomic bomb by:
Charles Richard Drew
Alessandro Volta
Robert Oppenheimer
Louis Braille
The study of distribution and abundance of living organisms, and the interactions between organisms and their environment is known as __.
Ecology
Biology
Mythology
Histology
Acids
produce H+ (or hydronium ion H3O+) in water
taste sour
neutralize bases
all of the above
A weak acid
does not dissolve in water
ionizes slightly in water to give molecules and a few ions
ionizes 100% in water to give all ions
dissolves in water only as molecules
There are two points A and B on a x-y axis with co-ordinates (-1,3) and (2,7). What is the minimum distance between the two points?
6 units
5 units
4.5 units
4.13 units
complete the series: 3 , 7 , 13 , 21 , _.
33
29
31
41