A. Duralumin and steel B. Brass and bronze C. Steel and permalloy D. Soft solder and duralumin Correct Answer: Option…
A. green when viewed through a blue glass B. blue when viewed through a blue glass C. orange-red when viewed…
A. rate of diffusion B. density C. boiling point D. solubility Correct Answer: Option C - boiling point
A. nitride ores B. sulphide ores C. oxide ores D. non-metals Correct Answer: Option B - sulphide ores
A. semi-metals B. metals C. colloids D. non-metals Correct Answer: Option A - semi-metals
A. nitrogen B. hydrogen C. oxygen D. flourine Correct Answer: Option C - oxygen
A. silver B. copper C. iron D. aluminium Correct Answer: Option A - silver Explanation In reality, silver actually has…
NH4Cl(s) ↔ NH3(g) + HCl(g) A. a gaseous reactant is added B. one of the products is removed C. it…
A. hydrogen bromide B. Sulphur (IV) oxide C. hydrogen sulphide D. ammonia Correct Answer: Option B - Sulphur (IV) oxide
N2(g) + 3H2(g) ↔ 2NH3(g) ΔH = -90 kJ A. increasing the pressure B. removing the ammonia as it is…