The reaction of hydrochloric acid and calcium trioxocarbonate (IV) produces?

5 years ago

A. calcium chloride, carbon (IV) oxide and water B. calcium chloride, and trioxocarbonate (IV) acid C. calcium hydroxide, carbon (IV)…

Brownian motion explains?

5 years ago

A. Boyle’s law B. Collision theory C. Laws of chemical combination D. Molecular motion in liquids and gases E. Vibrational…

A chemical system is at equilibrium when?

5 years ago

A. δG is positive B. δG is zero C. δS is negative D. δS is positive E. δS is zero.…

When sodium hydroxide solution is added to a solution of zinc salt; the white precipitate formed re-dissolve in excess sodium hydroxide because?

5 years ago

A. sodium hydroxide is a strong alkali B. sodium is more reactive than zinc C. zinc is more reactive than…

Which of these arrangement of elements is in order of increasing ionization energy?

5 years ago

A. Boron, Carbon, Flourine, Nitrogen B. Boron, Carbon, Nitrogen, Flourine C. Carbon, Boron, Nitrogen, Flourine D. Flourine, Nitrogen, Carbon, Boron…

An element Z has a combining power of 3. Which of the following formulae is correct of its compound?

5 years ago

A. ZS3 B. ZSO3 C. ZSO4 D. ZO3 E. Z3Cl2 Correct Answer: Option D - ZO3

Bauxite is the ore of?

5 years ago

A. aluminium B. calcium C. Iron D. sodium E. magnesium Correct Answer: Option A - aluminium

Matter is neither created nor destroyed in the course of any chemical reactions is a statement of the law of?

5 years ago

A. combining volumes B. conservation of mass C. definite proportion D. multiple proportions E. reciprocal proportion. Correct Answer: Option B…

pH is define as?

5 years ago

A. [H+] B. –log [H] C. –log [H+] D. log [H] E. log [H+] Correct Answer: Option C = –log…

The action of zinc on an acid produces?

5 years ago

A. chlorine B. hydrogen C. nitrogen D. sulphur E. water vapour. Correct Answer: Option B - hydrogen