Chemistry

The acid used in electrolysis of water is dilute?

A. HNO3 B. CH3COOH C. H2SO4 D. HCl Correct Answer: Option C - H2SO4

5 years ago

The major source of oxides of nitrogen is from the burning of?

A. coal B. wood C. fuel D. chlorofluorocarbons Correct Answer: Option C - fuel Explanation Nitrogen oxides form when fuel…

5 years ago

For a given solute; the concentration of its saturated solution in different solvents are?

A. the same at the same temperature B. different at the same temperature C. the same at different temperature D.…

5 years ago

If 10.5g of lead (II) trioxonitrate (V) is dissolved in 20cm³ of distilled water at 18°C; the solubility of the solute in mol dm-³ is? [Pb = 207, N = 14, O = 16]

A. 1.60 B. 5.25 C. 16.00 D. 525.00 Correct Answer: Option A = 1.60

5 years ago

Water can be obtained as the only product during the?

A. combustion of hydrocarbons B. neutralization of an acid by base C. combustion of hydrogen D. electrolysis of brine Correct…

5 years ago

When sodium trioxocarbonate (IV) decahydrate loses its water of crystallization to the atmosphere, the process is?

A. deliquescence B. efflorescence C. hygroscopic D. effervesecence Correct Answer: Option B - efflorescence

5 years ago

The mixture of gases used in a photographer’s flash tube is?

A. argon and krypton B. krypton and xenon C. helium and argon D. argon and xenon Correct Answer: Option B…

5 years ago

The type of bonding in {Cu(NH3)4}²+ is?

A. coordinate B. electrovalent C. metallic D. covalent Correct Answer: Option A - coordinate

5 years ago

Which quantum number divides shells into orbitals?

A. principal B. Azimuthal C. Magnetic D. Spin Correct Answer: Option B - Azimuthal

5 years ago

Cathode rays causes an object placed behind a perforated anode to cast a shadow on the screen. This observation shows that the rays?

A. are positively charged B. are negatively charged C. have mass D. travel in straight lines Correct Answer: Option D…

5 years ago
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