Jamb 2010 Chemistry Past Questions And Answers
1
Which of the following salts is slightly soluble in water?
- A) AgCl
- B) CaSO4
- C) Na2CO3
- D) PbCl2
2
The IUPAC nomenclature of the compound LiAlH4 is
- A) lithiumtetrahydridoaluminate (III)
- B) aluminium tetrahydrido lithium
- C) tetrahydrido lithium aluminate (III)
- D) lithium aluminium hydride
3
The maximum number of electrons in the L shell of an atom is
- A) 2
- B) 8
- C) 18
- D) 32
4
Two hydrocarbons X and Y were treated with bromine water. X decolorised the solution and Y did not not. Which class of compound does Y belong?
- A) Benzene
- B) Alkynes
- C) Alkenes
- D) Alkanes
5
Substance employed as drying agents are usually
- A) amphoteric
- B) hydroscopic
- C) efflorescent
- D) acidic
6
In the diagram below, the gas produced is
- A) NO
- B) NO2
- C) N2O
- D) N2O4
7
Carbon (II) oxide is considered dangerous if inhaled mainly because it
- A) can cause injury to the nervous system
- B) competes with oxygen in the blood
- C) competes with carbon (IV) oxide in the blood
- D) can cause lung cancer
8
What quantity of aluminium is deposited when a current of 10A is passed through a solution of an aluminium salt for 1930s? [Al = 27, F = 96500 C mol -1]
- A) 0.2 g
- B) 1.8 g
- C) 5.4 g
- D) 14.2 g
9
When iron is exposed to moist air, it gradually rusts. This is due to the formation of
- A) hydrate iron (III) oxide
- B) anhydrous iron (III) oxide
- C) anhydrous iron (II) oxide
- D) hydrate iron (II) oxide
10
Coffee stains can best be removed by
- A) Kerosine
- B) turpentine
- C) a solution of borax in water
- D) ammonia solution