Which of the following is the only non-metallic substance present in liquid state at room temperature?
A. Fluorine
B. Iodine
C. Chlorine
D. Bromine
Answer: Option D
A. Fluorine
B. Iodine
C. Chlorine
D. Bromine
Answer: Option D
Red phosphorus is less reactive than yellow phosphorus because
A. it is red in colour
B. it is highly polymerised
C. it is insoluble in C2H5OH
D. it is hard
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