Multiple Choice QuestionsThe minimum amount of O2(g) consumed per gram of reactant is for the reaction :
(Given atomic mass : Fe = 56, O=16, Mg=24, P= 31, C=12, H=1)
2Mg(s) + O2(g) → 2MgO (s)
4Fe(s) + 3O2(g) → 2Fe2O3(s)
P4(s) + 5O2(g) → P4O10(s)
C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O (l)
B.
4Fe(s) + 3O2(g) → 2Fe2O3(s)
(i) 1gm of Mg → 2/3 gm of O2
(ii) 1gm of Fe → 3/7 gm of O2
(iii) 1gm of P → 160/124 of O2
(iv) 1 gm of C3H8 → 160/44 of O2
The number of pentagons in C60 and trigons (triangles ) in white phosphours, respectively ,are :
20 and 4
20 and 3
12 and 4
12 and 3
Match the compounds given in column I with the hybridization and shape given in column II and mark the correct option.
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Column I |
Column II |
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A.XeF6 |
1.Distorted octahedral |
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B.XeO3 |
2.Square planar |
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C.XeOF4 |
3.Pyramidal |
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D.XeF4 |
4.Square pyramidal |
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A
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B
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C
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D
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A
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B
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C
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D
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A
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B
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C
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D
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A
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B
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C
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D
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Which is the correct statement for the given acids?
Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.
phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid
Both are triprotic acids
Both are triprotic acids
The product obtained as a result of a reaction of nitrogen with CaC2 is
CaCN
CaCN3
Ca2CN
Ca2CN
Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?
Cl2>Br2>F2>I2
Br2>I2>F2>Cl2
F2>Cl2>Br2>I2
F2>Cl2>Br2>I2
Among the following, the correct order of acidity is
HClO<HClO2<HClO3<HClO4
HClO2<HClO<HClO3<HClO4
HClO4<HClO<HClO <HClO3
HClO4<HClO<HClO <HClO3
Which of the following options represents the correct order?
O2-> O2>O2+
O2-<O2<O2+
O2->O2<O2+
O2->O2<O2+
Nitogen dioxide and sulphur dioxide have some properties in common. which property is shown by one of these, comounds but not the order?
Forms acid -rain
Is a reducing -agent
Is a soluble in water
Is a soluble in water
The maximum bond angle at nitrogen is present in which of the following?
NO2
NO2-
NO2+
NO2+
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