Jamb Chemistry Past Questions For Year 2014
Question 1
200 cm3 of a gas at 25oC exerts a pressure of 700 mmHg. Calculate its pressure if its volume increase 350 cm3 at 75oC.
- A. 342.53 mmHg
- B. 1430.54 mmHg
- C. 467.11 mmHg
- D. 400.00 mmHg
Question 2
A gas X diffuses twice as fast as gas Y. if the relative molecular mass of X is 32, calculate the relative molecular mass of Y.
- A. 128
- B. 8
- C. 16
- D. 64
Question 3
What is the percentage of sulphur in sulphur (IV) oxide?
- A. 66%
- B. 25%
- C. 40%
- D. 50%
Question 4
A mixture is different from a compound because
- A. the properties of a compound are those of its individual constituents while those of a mixture differ from its constituents
- B. a mixture is always homogeneous while a compound is not
- C. the constituent of a compound are chemically bound together while those of a mixture are not
- D. a mixture can be represented by a chemical formula while a compound cannot
Question 5
The radio active radiation used in studying the arrangement of particles in giant organic molecules is
- A. \(\gamma\)- rays
- B. \(\alpha\)- particles
- C. X-rays
- D. \(\beta\) - particles
