Chemistry 2019 JAMB Past Questions

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What volume of 0.100M sodium trioxonitrate (V) solution contains 5g of solute.
[Na = 23, N = 14, O = 16]

A. 1.7 litres
B. 0.420 litres
C. 0.588 litres
D. 2.35 litres

View Answer & Discuss (5) JAMB 2019

The two ions responsible for hardness in water are

A. Ca\(^{2+}\) and / or Mg\(^{2+}\)
B. K\(^+\) and / or Mg\(^{2+}\)
C. Ca\(^{2+}\) and / or Li\(^+\)
D. Ca\(^{2+}\) and / or Na\(^+\)

View Answer & Discuss JAMB 2019

Which of the following could not be alkane?

A. C\(_4\)H\(_{10}\)
B. C\(_5\)H\(_{12}\)
C. C\(_7\)H\(_{14}\)
D. C\(_8\)H\(_{18}\)

View Answer & Discuss (2) JAMB 2019

The electronic configuration of element Z is 1s\(^2\) 2s\(^2\) 2p\(^6\) 3s\(^2\) 3p\(^1\). What is the formula of the compound formed between Z and tetraoxosulphate (VI) ion.

A. Z\(_3\)(SO\(_4\))\(_2\)
B. ZSO\(_4\)
C. Z\(_2\) SO\(_4\)
D. Z\(_2\)(SO\(_4\))\(_3\)

View Answer & Discuss JAMB 2019

The hybridization in the compound \(CH_3 - CH_2 - C \equiv H\) is

A. sp\(^3\) and sp
B. sp
C. sp\(^2\)
D. sp\(^3\) and sp\(^2\)

View Answer & Discuss (16) JAMB 2019

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