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Jamb Chemistry CBT Practice Quiz

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Modified On Oct 20, 2022

Welcome to Flashlearners Chemistry Quiz... Read Each Question Carefully And Choose The Best Answer From The Options. You May Click Here for Free Video Tutorials To Boost Your Score Or Simply Click Here To Access Thousands of Chemistry Questions Offline. Next To Begin...

1. 
If an element has the electronic configuration 1s2 2s2 2p6 3s2 3p2 , it is

2. 
Increasing the pressure of a gas

3. 
Stainless steel is an alloy of

4. 
Consecutive members of an alkane homologous series differ by

5. 
Reaction of X with yeast forms the basic of the

An unknown organic compound X has a relative molecular mass of 180. It is a colourless crystalline solid, readily soluble in water. X contains the element C, H, and O in the atomic ratio 1:2:1. The compound has a sweet taste and melts on heating. In the presence of yeast and in the absence of air X is converted to compound Y in the absence of air, X is converted to compound Y and colorless gas. Compound Y reacts with sodium metal to produce a gas Z which gives a €˜pop€™ sound with a glowing splint. Y also reacts with ethanoic acid to give a sweet smelling compound W.

6. 
A jet plane carrying 3,000 kg of ethane burns off all the gas-forming water

A jet plane carrying 3,000 kg of ethane burns off all the gas-forming water and carbon dioxide. If all the carbondioxide is expelled and the water formed is condensed and kept on board the plane, then the gain in weight is

7. 
When sodium dioxonitrate (111) (HaNO2\) dissolves is

8. 
Which of the following is neutralization reaction?

9. 
A mixture of common salt, ammonium chloride and barium sulphate can best be separated by

10. 
The flame used by welders in cotton metals is

11. 
Which if the following solution will give a white precipitate with barium chloride solution and a green flame test?

12. 
Solution X,Y, and Z have pH values 3.0, 5.0 and 9.0

Solution X, Y, and Z have pH values 3.0, 5.0 and 9.0
respectively. Which of the following statements is
correct?

13. 
The mass of an atom is determined by

14. 
Which of these metals, Mg, Fe, Pb, andCu will dissolve in dilute HCI?

15. 
Which of the following statements is FALSE?

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94 Comments

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      Reply
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