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86. In S03 what is the valency of sulphur atom? (Ntsw Madhya Pradesh, Stage-I, 2015-16)
3
1
5
6
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87. When KN03 is dissolved in water, heat is absorbed. If the temperature of the reaction is raised then according to Le-Chatelier's Principle solubility of KN03 will (NTSE Chhattisgarh, Stage-I, 2015-16)
Decrease
Increase
Remain the same
Not be predicted
88. The quantum number which explain about size and energy of the orbit or shell is (NTSE Telangana, Stage-I, 2016-17)
Principle quantum number
Angular momentum quantum number
Magnetic quantum number
Spin quantum number
89. The molecular formula of potash alum is (NTSE Uttar Pradesh, Stage-I, 2016-17)
K2S04.AI2(S04)3.24H20
Ca(OCI)CI
K2S04
AI2(S04)324H20
90. The number of carbon atom in kerosene oil is (NTSE Uttar Pradesh, Stage-I, 2016-17)
C6 - C11
C20 - C30
C11 - C16
C19 - C22
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