A. large particles B. germs C. fine particles D. odour Correct Answer: Option A - large particles
A. nitrogen and oxygen B. carbon (IV) oxide and oxygen C. noble gases and carbon (IV) oxide D. oxygen and…
A. decrease across the period and increase down the group B. increase across the period and decrease down the group…
A. Moseley B. Rutherford C. Millikan D. Dalton Correct Answer: Option B - Rutherford
A. solid particles have more kinetic energy than the particles of liquid and gases B. solid particles have less kinetic…
A. 243.75 cm³ B. 369.23 cm³ C. 738.46 cm³ D. 1733.36 cm³ Correct Answer: Option B - 369.23 cm³ Explanation…
2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) A. 0.40g B. 0.80g C. 4.00g D. 8.00g Correct Answer: Option C -…
A. lower the melting point of the ice B. increase the density of the ice C. make the ice impure…
A. crystallization B. hydrolysis C. chromatography D. sublimation Correct Answer: Option C - chromatography
A. Naturally radioactive B. abundant in nature C. a transition metal D. an isotopic mixture Correct Answer: Option D -…