Post Utme Chemistry Past Questions and Answers

Question 991:

Which of the following statements is true when sulphur atom forms its ion?

A. It achieves an inert configuration
B. It transfers two electrons in the process
C. It accepts one electron in the process
D. It gets oxidized in the process

Question 992:

An excess \(0.10\) moldm \(^{-3} HCl\) was poured into a big beaker containing \(2 g\) of limestone. The unreacted acid required \(25 cm ^{3}\) of \(0.10 moldm ^{-3}\) potassium carbonate to neutralize it. What was the original volume of the acid? [ Ca =40, C\) \(=12, O =16]

A. \(250 cm ^{3}\)
B. \(260 cm ^{3}\)
C. \(400 cm ^{3}\)
D. \(450 cm ^{3}\)

Question 993:

Whose experiment showed that the atom has a tiny positively charged nucleus?

A. Thompson
B. Rutherford
C. Millikan
D. Dalton

Question 994:

Which of the quantum number divides shells into orbitals?

A. Principal
B. Subsidiary
C. Magnetic
D. Spin

Question 995:

Which of these statements is/are correct of a proton? i. The mass of a proton is one-twelfth the molar mass of carbon ii. The mass of a proton is 1840 times the mass of an electron iii. The mass of a proton is \(1.0008 g\).

A. Ii only
B. I, ii and iii
C. I only
D. I and ii only