A. 6.0 B. 6.1 C. 6.9 D. 7.0 Correct Answer: Option C C. 6.9 Explanation Contribution by isotope 6 =…
A. 1 B. 3 C. 5 D. 7 Correct Answer: Option C C. 5
A. 2.24 dm³ B. 5.60 dm³ C. 11.20 dm³ D. 44.80 dm³ Correct Answer: Option B B. 5.60 dm³
A. Copper B. Iron C. Magnesium D. Zinc Correct Answer: Option A A. Copper
A. a high percentage of carbon as impurity B. calcium trioxosilicate (IV) C. unreacted haematite D. undecomposed limestone Correct Answer:…
A. sodium trioxocarbonate (IV) B. tetraoxosulphate (VI) acid C. lead (lV) tetraethyl D. sodium hydroxide Correct Answer: Option C C.…
A. Decantation B. Distillation C. Evaporation D. Filtration Correct Answer: Option B B. Distillation
A. l and ll only B. l and lll only C. l, ll and lll only D. l, ll, lll…
A. copper (l) oxide B. copper (ll) oxide C. copper (l) chloride D. copper (ll) hydroxide Correct Answer: Option A…
A. CH3CH2CH3 B. CH3COOH C. CH3CH2CHO D. CH3CH(OH)CH3 Correct Answer: Option B B. CH3COOH