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0.0075 mole of calcium trioxocarbonate (IV) is added to 0.015 mole of a solution of hydrochloric acid. The volume of gas evolved at s.t.p is?
[Molar volume of a gas at s.t.p = 22.4 dm3]

A. 224cm³
B. 168cm³
C. 112cm³
D. 100cm³

View Answer & Discuss (10) JAMB 2009

If an atom is represented as \( _{11}^{23}X \), which of the following deduction is correct?

A. it contains 12 protons
B. it forms a covalent chloride
C. its atomic number is 23
D. it is an alkali metal

View Answer & Discuss (3) JAMB 2009

Which quantum number divides shells into orbitals?

A. principal
B. Arzimuthal
C. Magnetic
D. Spin

View Answer & Discuss (2) JAMB 2009

The type of bonding in \({Cu(NH_3)_4}^2\)+ is?

A. coordinate covalent
B. electrovalent
C. metallic
D. covalent

View Answer & Discuss (1) JAMB 2009

The oxidation state of Cr in K\(_2\)Cr\(_2\)O\(_7\) is?

A. +7
B. +6
C. +5
D. 4

View Answer & Discuss (1) JAMB 2009

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