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Question 1
A
atomic weights  
B
isotopic weights  
C
molecular weights  
D
atomic numbers  
Explanation.

No official Explanation yet!

Correct Option:
D

Question 2
A
2.2 M  
B
1.1 M  
C
0.22 M  
D
0.11 M  
Explanation.

No official Explanation yet!

Correct Option:
C

Question 3
A

be bleached

 
B

turn green

 
C

turn red

 
D

turn blue

 
Explanation.

No official Explanation yet!

Correct Option:
D

Question 4
A
Al and Mg  
B
Zn and Fe  
C
Zn and Pb  
D
Pb and H  
Explanation.

No official Explanation yet!

Correct Option:
A

Question 5
A

collisions are perfectly elastic

 
B

forces of repulsion exist

 
C

forces of repulsion and attraction are in equilibrium

 
D

collisions are inelastic.

 
Explanation.

Collisions between gas particles or collisions with the walls of the container are perfectly elastic. None of the energy of a gas particle is lost when it collides with another particle or with the walls of the container.


Correct Option:
A

Question 6
A
I, II, III and IV  
B
I and II only  
C
II only  
D
I, III and IV only.  
Explanation.

No official Explanation yet!

Correct Option:
D

Question 7
A

Elements in the same period have the same number of valence electrons

 
B

The valence electrons of the elements in the same period increase progressively across the period.

 
C

Elements in the same group have the same number of electron shells

 
D

The non-metallic properties of the elements tend to decrease across each period.

 
Explanation.

No official Explanation yet!

Correct Option:
B

Question 8
A
hydrolysis  
B
esterification  
C
acidification  
D
saponification  
Explanation.

No official Explanation yet!

Correct Option:
D

Question 9
A
CO2 and H2O  
B
NO and H2O  
C
CO and CO2  
D
SO2 and NO  
Explanation.

No official Explanation yet!

Correct Option:
D

Question 10
A
lowering the pressure of the reaction  
B
increasing the surface area of the reaction  
C
increasing the rate of the reaction  
D
lowering the energy barrier of the reaction.  
Explanation.

No official Explanation yet!

Correct Option:
D

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