Qno.1 When NaCl is dissolved in water , the sodium ions get :
Ans. Hydrated
Qno.2 Alkali metals do not exist in free state in nature , because they are :
Ans. Very reactive
Qno.3 Which of the following cannot be obtained by electrolytic process:
Ans. Sodium carbonate
Qno. 4 From Li C’s , ionization Energy :
Ans. Decrease
Qno.5 Potassium does not show +2 oxidation state because of its :
Ans. High second ionization potential
Qno.6 Which one of these elements has the highest heat of hydration:
Ans. Be
Qno.7 Elements with us ns’ Valence shell configuration are Called :
Ans. Alkali metals
Qno. 8 The general Valence shell configuration of alkaline earth metals is :
Ans. ns²
Qno.9 Which one of the following elements of group II_A has the highest atomic number:
Ans. Ba
Qno. 10 Which one of the following elements has the highest oxidation potential:
Ans. Li
Qno. 11 Sodium ion Na+ is :
Ans. Smaller than Na atom
Qno. 12 The valency of each element in group II is :
Ans. +2
Qno. 13 Which one of the following elements has the highest ionization potential:
Ans. Li
Qno. 14 The chemical formula of magnetic is :
Ans. MgCO³
Qno.15 The chemical formula of Epsom salt is :
Ans. MgSo4 7H2O
Qno. 16 Alkali metals act as powerful:
Ans. Reducing agents
Qno. 17 Sodium carbonate is commonly known as :
Ans. Washing Soda
Qno.18 Bleaching Powder is generally represented as :
Ans. CaOCl2
Qno.19 The cloride of alkali metals and alkaline earth metals are generally:
Ans. Ionic
Qno. 20 Sodium readily reacts with water , hence it is stored in :
Ans. Kerosene oil
Qno. 21 Sodium carbonate is prepared by :
Ans. Solvay process
Qno. 22 The most abundant salt of sodium is its :
Ans. Chloride
Qno.23 The reaction of water with sodium is :
Ans. Exothermic
Qno. 24 Which one of the following alkhali metals does not form alum :
Ans. Li
Qno. 25 Which has minimum hydration energy:
Ans. Cs±
Qno. 26 Which of the following reacts move vigorously with water :
Ans. CS
Qno. 27 When Li burns in the excess of O2 it forms:
Ans. Normal sodium
Qno. 28 When Na burns in excess of O2 it forms :
Ans. Peroxide
Qno. 29 When Na heated in flame it will give :
Ans. Golden yellow colour
Qno. 30 Cheif salt Peter is :
Ans. NaNo3
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