A. Chlorine B. Bromine C. Iodine D. Mercury
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A. A compound B. A mixture of compounds C. A metals D. An elements
A. Vapour density B. Specific heat C. Atomic weight D. Molecular weight
A. In the range 5.5-6.5 B. In the range of 8-9 C. Less than 5.5 D. Is in the range of 6.5-7.5
A. Tracheae B. Malpighian tubules C. Rectal gland D. Midgut diverticulum
A. Flame cells B. Green gland C. Nephridia D. Kidney
A. Carbon reduction B. Carbon monoxide reduction C. Aluminothermic process D. Electrolytic reduction