Chemistry | Study Mode

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Question 1
A
Cu(NO3)3 + NO + N2O4 + H2O
B
Cu(NO3)2 + NO + H2O
C
CuO + NO2 + H2O
D
Cu(NO2)3 + NO2 + H2O
Explanation

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Correct option: D
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Question 2
A
all the reactants have been used up
B
all the products have been formed
C
there is no further change in temperature
D
the rates of the forward and backward reactions are equal
E
the rate of formation of the products decreases with time
Explanation

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Correct option: D
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Question 3
A
lactic acid
B
amino acid
C
propanoic acid
D
palmitic acid
E
stearic acid
Explanation

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Correct option: B
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Question 4
A
manufacture of tetraoxosulphate (VI) acid
B
prevention of the growth of fungi
C
vulcanization rubber
D
manufacture of dyes
E
coating of steel to prevent rusting
Explanation

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Correct option: E
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Question 5
A
is a double decomposition
B
is a neutralization
C
is reversible
D
is usually catalysed
E
attains equilibrium after a few seconds
Explanation

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Correct option: B
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Question 6
A
Benzene
B
Cyclobutane
C
Cyclopentane
D
Hexane
E
Ethene
Explanation

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Correct option: A
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Question 7
A
Addition or presence of a catalyst
B
Size of the reacting particles
C
The enthalpy change for the reaction
D
Concentration of the reactants
E
Temperatureat which the reaction is carried out
Explanation

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Correct option: C
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Question 8
A
Addition or presence of a catalyst
B
Size of the reacting particles
C
The enthalpy change for the reaction
D
Concentration of the reactants
E
Temperatureat which the reaction is carried out
Explanation

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Correct option: C
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Question 9
A
6.02 x 10 23
B
3.01 x 1022
C
6.02 x 1022
D
5. 08 x 1022
E
3.01 x 1022
Explanation

27g Aluminium = \(6.02 \times 10^{23}\)

1g Al = \(\frac{6.02 \times 10^{23}}{27}\)

2.7g Al = \(\frac{6.02 \times 10^{23}}{27} \times 2.7\)

= \(6.02 \times 10^{22} Al \) atoms


Correct option: C
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Question 10
A
CH2
B
CH3
C
C2H2
D
C2H4
E
C2H6
Explanation

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Correct option: B

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