A. carbon B. carbon(iv)oxide C. ethane D. ethanol Correct Answer: Option A = carbon Explanation Carbon concentration of 4 will not…
A. oxygen B. chlorine C. nitrogen D. hydrogen Correct Answer: Option A - oxygen Explanation Oxygen is a substance that…
A. 135.0cm³ B. 150.0cm³ C. 45.0cm³ D. 90.0cm³ Correct Answer: Option D - 90.0cm³ Explanation CH4(g) + 2O2(g) → 2H2O(g)…
A. electroplating B. Arc-welding C. reducing and mixture of their metallic D. cooking a molten of the metals Correct Answer:…
A. 1s² 2s² 2p6 3s² 3p¹ B. 1s² 2s² 2p4 3p¹ 3s¹ C. 1s² 2s² 2p6 3s² 3p³ D. 1s²…
A. AlCl3 B. NH4Cl C. Na2CO3 D. CH3COONa Correct Answer: Option A - AlCl3 Explanation AlCl3 will give a precipitate…
PCL5(g) ↔ PCL3(g) + Cl2(g) A. Decelerate the reaction B. Increase yield of PCl3 C. Increase the yield of PCl5…
A. decrease B. increase C. remain constant D. be zero Correct Answer: Option D - be zero
A. oxygen is consumed B. heat is supplied C. the reversible process occurs D. a new substance is formed Correct…
A. calcium tetraoxosulphate (IV) B. calcium hydrogentrionocarbonate (IV) C. calcium hydroxide D. calcium trioxocarbonate (IV) Correct Answer: Option D -…