Chemistry | Study Mode

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Question 21
A
the reaction of trioxocarbonate(IV) with an aci
B
double decomposition.
C
the action of dilute acid on an insoluble base.
Explanation

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Correct option: B
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Question 22
A

O2(g)

B

H2O(l)

C

F2(g)

D

HF(aq)

Explanation

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Correct option: C
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Question 23
A

CuSO4(aq)

B

ZnSO(aq)

C

Cu(s)

D

Zn(s)

Explanation

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Correct option: A
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Question 24
A
chlorine.
B
oxygen.
C
tetaoxosulphate(Vl) aci
D
hydrogen.
Explanation

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Correct option: D
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Question 25
A

224,000

B

0.056

C

0.224

D

56,000

Explanation

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Correct option: B
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Question 26
A
be indeterminate.
B
be spontaneous.
C
not be spontaneous.
D
be at equilibrium.
Explanation

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Correct option: C
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Question 27
A

decreasing the pressure.

B

decreasing the temperature.

C

increasing the temperature.

D

the addition of catalyst

Explanation

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Correct option: B
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Question 28
A
lattice energy
B
ionization energy.
C
activation energy
D
kinetic energy.
Explanation

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Correct option: C
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Question 29
Chemistry Q 29 image
A

100KJ

B

300KJ

C

250KJ

D

200KJ

Explanation

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Correct option: A
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Question 30
A

Fe3O4H2FeH2O

B

H2O4H24

C

H24H2O4

D

Fe3H2O2Fe3O4H24

Explanation

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Correct option: C

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