General Science

Physical and Chemical Changes
Gases are compressible because of
space between particles
collision of particles
movement of particles
attraction force between particles
Author: rikazzz Comment
Atoms and Atom Model
The number of neutrons in carbon-13 is
5
6
7
13
Author: rikazzz Comment
Sound Waves
Sound is carried to our ears through
pressure
vibrations
temperature effect
humidity effect
Author: rikazzz Comment
Electric Circuits and Currents
Friction can cause transfer of
neutrons
protons
electrons
photons
Author: rikazzz Comment
Physical and Chemical Changes
Ammonia is
green in color
blue in color
colorless
brown in color
Author: rikazzz Comment
Mixtures
A technique which is used to separate and identify the different constituents of mixture is called
paper chromatography
color chromatography
dye chromatography
chemical chromatography
Author: rikazzz Comment
Physical and Chemical Changes
Particles are packed closely and tightly in
solids
semi solids
liquids
gases
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Physical and Chemical Changes
‘Ethene’ is
alkane
alkene
alcohol
carboxylic acid
Author: rikazzz Comment
Physical and Chemical Changes
Meaning of the word “anhydrous” is
with water
without water
with copper
without copper
Author: rikazzz Comment
Physical and Chemical Changes
To make high temperature for formation of ammonia, the substance which is used, is
steel
iron
aluminum
copper
Author: rikazzz Comment

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