Elements and Substances
A compound is a
pure substance
substance with varying boiling points
a substance with varying melting points
an impure substance due to various elements
pure substance
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Which one of the following does not react with acids?A. O
B. Cr
C. Cu
D. Ni
Which substance is present in fuel?
A. Iron
B. Gold
C. Carbon
D. Copper
Symbol of Copper is
A. Ca
B. Cl
C. Co
D. Cu
When sulphur dioxide is dissolve in water then
A. Sulphur is formed
B. Sulphuric acid is formed
C. Sulphur trioxide is formed
D. Sulphurous acid is formed
Copper sulphate (CuSO4) possesses
A. Red colour
B. Blue colour
C. Green colour
D. Yellow colour
Smallest particle of a compound is
A. atom
B. electrons
C. molecules
D. all of these
Which material show shiny appearance?
A. Coal
B. Carbon
C. Sulphur
D. Aluminium
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