PPSC Chemistry Full Book Test With Answers

image
image
image

PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 Which of the following elements does not impart any characteristic colour to the flame. Ca Mg Ba Sr
2 Which of the following elements has the highest value of second ionization energy. Lithum Beryllium Boron Magnesium
3 Ca2+ is isolelectronic with. Mg2+ Kr Ar Na+
4 Of the following an amphoteric hydroxide is. Ca(OH)2 NaOH Be (OH)2 Li OH
5 Lime water is an aqueous solution of. MgSO4 Ca (OH)2 CaCO3 CaSO4
6 Which of the following would decompose at lowest temperature. MgCO3 SrCO3 BaCO3 CaCO3
7 Which of the following exists as polymeric chains in solid state. Sr Cl2 Ba Cl2 MgCl2 BeCl2
8 Which of the following is most soluble in water CaSO4 Sr SO4 MgSO4 BaSO4
9 Which of the following is the most stable towards heat. CaCO3 BaCO3 Na2CO3 MgCO3
10 Which of the following hydroxides is most stable. Mg (OH)2 Ca(OH)2 Sr (OH)2 Ba (OH)2
11 Which of the following oxides is amphoteric.. CaO BaO BeO MgO
12 Which of the following is not true as compared with alkaline earth metals. Alkali metals are more reactive Alkali metals have lower density Alkali metals are more electro positiveness Alkali metals have stronger metallic bonds
13 Which of the following elements with excess oxygen to form proxides. Ca Mg Li Ba
14 Hydrolith is the common name of NaH CaH2 NaF CaF2
15 When calcium is heated in the flame of a Bunsen burner, the colour imparted to the flame is. Golden yellow Brick red Crimson red Grassy green
16 Which among the following elements has the highest value of IE. Mg Na Ca Sr
17 Which of the following elements has the highest density. Mg Na K Rb
18 The most common oxidation state of alkaline earth metals is. +1 +2 -2 -1
19 Setting of plaster of Paris volves. Oxidation with atmospheric oxygen Combination with atmosphere CO2 Dehydration Hydration to yield another hydrate
20 Of the following the commonly used n the laboratory desiccator is. Anhyd. Na2Co3 Anhyd Ca Cl2 Dry NaCl None of the above
21 Which of the following metals is the most abundant in the earth's crust. Mg Ca K Na
22 Which of the following is not an alkali metal Rb Sb Cs Fr
23 The wire of flash bulb is made up of. Cu Ag Mg Ba
24 The formula of bleaching powder is. Ca OCl2 CaCIO3 Ca(CIO)3)2 CaOCI
25 At high temperature nitrogen combines with calcium carbide to give Calcium cyanide Calcium cyanamide Calcium nitride Calcium cabonate
26 Magnesium burns in air to give. MgO MgCO3 Mg3N2 Both A and C
27 The compound insoluble in acetic acid is. Calcium oxide Calcium carbonate Calcium oxalate Calcium hydroxide
28 Calcium cyanamide on treatment with steam under pressure gives NH3 and Calcium carbonate Calcium hydroxide Calcium oxide Calcium bicarbonate
29 Dolmite is a mineral whose formula is. CaCO3 Mg CO3 CaCO3, MgCO3 CaSO4
30 Beryllium shows diagonal relationship with. Mg Al Na B
Download This Set

Is this page helpful?

×