Jamb Chemistry Past Questions and Answers

Question 1931:

• JAMB 2017

\(^{226}_{88}Ra\) → \(^x_{86}Rn\) + alpha particle

A. 226
B. 220
C. 227
D. 222

Question 1932:

• JAMB 2017

The shape of ammonia molecules is

A. Trigonal planar
B. Octahedral
C. Square planar
D. Tetrahedral

Question 1933:

• JAMB 2017

The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s is — (Ag = 108 F = 96500(mol-1)

A. 54.0g
B. 27.0g
C. 13.5g
D. 108.0g

Question 1934:

• JAMB 2017

Tin is unaffected by air at ordinary temperature due to its

A. Low melting point
B. Weak electropositive character
C. High boiling point
D. White lustrous appearance

Question 1935:

• JAMB 2017

Calculate the amount in moles of silver deposited when 9650C of electricty is passed through a solution of silver salt [= 96500 Cmol^-1]

A. 0.05
B. 10.80
C. 10.00
D. 0.10