Chemistry (2018) | Study Mode

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Question 2
A
2.2 M 
B
1.1 M 
C
0.22 M 
D
0.11 M 
Explanation.
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No official Explanation yet!


Correct Option:
C
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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.
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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
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Question 6
A
I, II, III and IV 
B
I and II only 
C
II only 
D
I, III and IV only. 
Explanation.
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No official Explanation yet!


Correct Option:
D
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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.
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No official Explanation yet!


Correct Option:
B
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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.
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No official Explanation yet!


Correct Option:
D
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