Fsc Part 2 Chemistry Online Test-Chapter 2 S-Block Elements

Chemistry Fsc Part 2 Chapter 2 Online Test

Sr. #	Questions	Answers Choice
1	Magnesium metal does not burn in the jar of	N2 O2 Ne N2 and O2
2	Which element reacts with carbon to form metal carbide.	Li Na K All of these
3	The crystals of caustic soda, NaOH, are hygroscopic when these crystals are exposed to air.	Gain water and remains solid Gain water and becomes liquid Lose mass and remain solid Remain unchanged on heating.
4	Which gas is evolved when CO2 is passed through KO2.	O2 CO O3 None of these
5	Which is more basic	RbOH NaOH KOH Li OH
6	Which is more basic	RbOH NaOH KOH Li OH
7	Which one of the following has lowest first ionization energy.	Li Na Rb Cs
8	Alkali metal whose carbonate is is relatively less stable and decomposes giving its oxides is.	Li Ba K Rb
9	Which one of the following pairs of metal reactive directly with nitrogen	Na and Mg Li and Mg Mg and Ca Li and Be
10	Which hydroxide decomposes on heating.	LiOH NaOH KOH CaOH
11	Which meal is least reactive	Li NaOH K Pb
12	Which element is present in chlorophyll	Ca Mg K Be
13	In which ore carbon is present	Magnesite Epsom salt Barite Sylvite
14	Ca Mg3 (SiO3)2 is the composition of.	Dolomite Gypsum Calcite Asbestos
15	Down's cell is used to prepare.	Sodium carbonate Sodium bicarbonate sodium metal Sodium hydroxide
16	The ore CaSO4.2H2O has the general name.	Gypsum dolomite Calcite Epsom salt
17	Chile saltpeter has the chemical formula	NaNO3 KNO3 Na2B4O7 Na2CO3.H2O