Post Utme Bayero University Kano Chemistry Past Questions and Answers

Question 1:

What volume of carbon (II) oxide is produce by reacting excess carbon with 10dm of oxygen?

A. \(15dm^3\)
B. \(10dm^3\)
C. \(5dm^3\)
D. \(20dm^3\)

Question 2:

The rate of diffusion of gas Y is twice that of Z. if the relative molecular mass of Y is 64 and the two gases diffuse under the same conditions, find the relative molecular mass of Z.

A. 8
B. 16
C. 32
D. 256

Question 3:

How many unpaired electrons are in the p-orbital of a fluorine atom?

A. 1
B. 2
C. 3

Question 4:

Which of the following molecule is held together by hydrogen bond?

A. \(H_2S0_4\)
B. HF
C. \(CH_4\)
D. HBr

Question 5:

The bond formed between two elements with electron configuration \(1s^22s^22p^63s^2\) and 1s^22s^22p^4\) is ____________

A. Dative
B. Ionic
C. Metallic
D. Covalent