05 May IP Chemistry Tuition – Question and Answer

1          At which temperature does a dilute aqueous solution of sodium chloride begin to boil?

A          96^oC                                         B          99^oC

C          100^oC                                       D          104^oC

2          Which diagram represents the arrangement of particles in a gas?

3          The table shows the boiling points of the elements found in a sample of liquid air.

Which elements would be gaseous at –190 °C?

A          argon, helium and nitrogen

B          argon, nitrogen and oxygen

C          helium, neon and nitrogen

D          helium, oxygen and neon

4          An element X forms a positive ion with the electronic structure 2,8,8.

What is the proton (atomic) number of X?

A          16                                            B          17

C          18                                            D          19

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Did you answer the Secondary Chemistry Tuition Question correctly?

1.D

2.A

3.C

4.D

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