Rusting of Iron involves_______________?
Rusting of Iron involves_______________?
A. Reduction
B. Oxidation
C. Decomposition
D. Displacement
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1 Meter = _________ millimeters?
1 Meter = _________ millimeters?A. 10000 millimeters (mm)
B. 10 millimeters (mm)
C. 100 millimeters (mm)
D. 1000 millimeters (mm)Calculus was invented by________?
Calculus was invented by________?A. Al-khawarzimi
B. Pythagoras
C. IsaaC Newton
D. Al.kindiThe element used in lead pencils is__________?
The element used in lead pencils is__________?A. Zinc
B. Lead
C. Carbon
D. TinAn egg sinks in soft water but floats in a concentrated solution of salt because?
An egg sinks in soft water but floats in a concentrated solution of salt because?A. egg absorbs salt from the solution and expands
B. albumin dissolves in salt solution and egg becomes lighter
C. the density of salt solution exceeds the density of eggs
D. water has high surface tensionElements are made of _________?
Elements are made of _________?
A. Atoms
B. Molecules
C. H2O
D. CompoundsHow many longitudes are there in Globe?
How many longitudes are there in Globe?A. 90
B. 180
C. 270
D. 360Since a sphere has 360 degrees, the Earth is divided into 360 longitudes. The meridian opposite the Prime Meridian (on the other side of the Earth) is the 180° longitude and is known as the anti meridian.