General Knowledge
CHEMISTRY MCQs
Total Questions : 1203
| Page 4 of 121 pages
Answer: Option A. -> Fluorine
Fluorine is the most reactive element of all in Group 7.
Fluorine is the most reactive element of all in Group 7.
Answer: Option A. -> Electronegativity
Electronegativity has no unit.
Electronegativity has no unit.
Answer: Option D. -> Fluorine
Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative.
Electronegativity increases from bottom to top in groups, and increases from left to right across periods. Thus, fluorine is the most electronegative element, while francium is one of the least electronegative.
Answer: Option C. -> Francium
The element with the lowest electronegativity value is francium, which has an electronegativity of 0.7.
The element with the lowest electronegativity value is francium, which has an electronegativity of 0.7.
Answer: Option C. -> Helium
The element with highest ionization potential is helium.
The element with highest ionization potential is helium.
Answer: Option C. -> Sulphonates
Sulphonate is a detergent used for cleaning clothes and utensils.
Sulphonate is a detergent used for cleaning clothes and utensils.
Answer: Option A. -> Tin and lead
An electrical fuse is a safety device in the circuit that protects electrical systems by breaking the connection when a short circuit is occurring. The fuse wire is made up of Sn (tin) and Pb (lead) alloy because of its high resistance and low melting.
An electrical fuse is a safety device in the circuit that protects electrical systems by breaking the connection when a short circuit is occurring. The fuse wire is made up of Sn (tin) and Pb (lead) alloy because of its high resistance and low melting.
Answer: Option A. -> Ethephon
Ethephon helps in fruit ripening.
Ethephon helps in fruit ripening.
Answer: Option B. -> Silver bromide
Silver halide is the most important chemical used in photographic processing. It is the key component of the emulsion.
Silver halide is the most important chemical used in photographic processing. It is the key component of the emulsion.
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