Which of the following is used as an anti-knock in automobile engines?
Tetramethylsilane
Leadtetraethyl
Glycerol
N-heptane
The use of diamond in abrasives is due to its
high melting point
hardness
octahedral shape
durability
Which of the following terms indicates the number of bonds that can be formed by an atom?
Oxidation number
Valence
Atomic number
Electronegativity
The refreshing characteristic taste of fizzy drinks is due to the presence of:
carbon(IV) oxide
glucose
hydrogen
sodium citrate
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