PPSC Chemistry Part III Inorganic Chemistry Online Test With Answers

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PPSC Chemistry Part III Inorganic Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following is the weakest base. KOH NaOH LiOH RbOH
2 Which of the following compounds liberates CO2 on heating. Li2CO3 Na2CO3 K2CO3 All liberate CO2 on heating.
3 Which of the following reacts with excess oxygen to form a normal oxide. Li Na K Rb
4 Which among the following is least soluble in water. NaF LiF KF CsF
5 Which among the following is insoluble in water. LiOH KOH NaOH RbOH
6 Sodium reacts with excess of oxygen to form Na2O NaO2 Na2O2 NaO
7 Potassium reacts with excess of oxygen to form K2O K2O2 KO2 K2O3
8 The most reactive alkali metal among the following is Li Na Cs Rb
9 The alkali metal that react with nitrogen directly to form nitrides. Na K Rb Li
10 Sodium react more vigorously than lithium because. It is a metal It has higher atomic mass It is more electronegative It is more electropositive
11 Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is. 4 6 8 12
12 Sodium metal cannot be stored under Hexane Benzene Kerosene Ethanol
13 The only oxidation state of alkali metals in their compounds is. +1 +2 -1 0
14 The colour imparted by lithium to the flame is. Golden yellow Grasay green Violet Red
15 Among alkali metals, the least metallic element is. Li Na Rb Cs
16 Lithium shows diagonal relationship with Beryllium Sodium Magnesium Calcium
17 The alkali metal with highest melting point is K Na Li Ca
18 The correct order of ionization energies of alkali metals is. Li > Na > K > Rb Na > K > Rb > Li Rb > K > Na > Li Rb > K > Li > Na
19 The lightest alkali metal is. Lithium Sodium Rubidium Caesium
20 Which of the following is not an alkali metal. Potassium Francium Sodium Strontium
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