A. are both metals B. belong to the same group C. belong to the same period D. are positioned diagonally…
A. carbon-14 B. phosphorus-32 C. cobalt D. iodine-131 Correct Answer: Option C - cobalt
A. 1.20 x 10²² B. 2.4 x 10²² C. 1.51 x 10²² D. 3.02 x 10²² Correct Answer: Option C…
A. 0.40 moldm−³ B. 0.50 moldm−³ C. 0.05 moldm−³ D. 0.30 moldm−³ Correct Answer: Option B - 0.50 moldm−³
An aqueous solution of a metal salt, M. gives a white precipitate with NaOH which dissolves in excess NaOH. With…
A. 1-methyl pentane B. 3-methylbutane C. 2-methylbutane D. 1-dimethyl propane Correct Answer: Option C - 2-methylbutane
A. lead oxide B. Magnesium oxide C. Copper oxide D. Tin oxide Correct Answer: Option B - Magnesium oxide Explanation…
A. 10cm³ B. 12cm³ C. 14cm³ D. 16cm³ Correct Answer: Option D - 16cm³
A. 1 B. 2 C. 3 D. 4 Correct Answer: Option D - 2
A. sodium dioxonitrate(III) and ammonium chloride B. sodium trioxonitrate(V) and ammonium chloride C. sodium chloride and ammonium trioxonitrate(V) D. sodium…