Categories
Physics

Isotopes of an element have different:

A:  Atomic number
B:  Number of electron
C:  number of neutron 
D:  electron and neutron

Categories
Physics

which one of the following will convert Fe3+to fe2+

A:  [H]
B:  KMnO4
C:  H2O2
D:  K2Cr2O7

Categories
Physics

inferences are deduced

A:  through collection of information
B:  by thoughtful considerations
C:  By coordinating with the previous information
D:  by all three factors mentioned above

Categories
Physics

A hypothesis think that universe:

A:  observation
B:  Experiment
C:  comparison with scientific laws
D:  comparison with other theories

Categories
Physics

the western scientists think that universe:

A:  Is created by  an idol
B:  comes into begin on its own
C:  is created by Almighty Allah
D:  Is imaginary

Categories
Physics

The information obtained from observation is called a :

A:  Fact 
B:  theory
C:  principle or law
D:  knowledge of science

Categories
Physics

sulphuric acid was discovered by:

A:  Al-Jahiz
B:  Berzellius
C:  Jabir Bin Haiyan
D:  Aristotle

Categories
Physics

the equation of mass and energy by Einstein is

A:  m= Ec2
B:  E=mc
C:  E=mc2
D:  E=m2c

Categories
Physics

amjad play football.

A:  football played is by Amjad.
B:  football played by amjad 
C: football played is amjad
D:  football played amjad is

Categories
Physics

spelling

A:  anxious 
B:  enxious
C:  anexious
D:  anxious