IIT JEE/IIT JEE Chemistry Of Representative Elements Sample Test,Sample questions

Question:
.Alkaline earth metal that resembles aluminium more than its congeners is

1.Be

2.Mg

3.Ca

4.Sr


Question:
.Among the following the most stable hydride is

1.NaOH

2.LiH

3.KH

4.RbH.


Question:
.Lithium shows diagonal relationship with

1.Beryllium

2.Sodium

3.Magnesium

4.Calcium.


Question:
.Which among the following is insoluble in water?

1.LiOH

2.NaOH

3.KOH

4.RbOH.


Question:
.Which of the following elements has the highest density?

1.Mg

2.Na

3.K

4.Rb.


Question:
.Which of the following halides has the maximum covalent character ?

1.CsI

2.KI

3.NaI

4.LiI.


Question:
.Which of the following metals has the highest melting point?

1.Li

2.Be

3.Na

4.Mg.


Question:
.Which of the following oxides is amphoteric ?CaO

1.CaO

2.BaO

3.BeO

4.MgO.


Question:
A fire-work gives green colour. It possibly contains some salt of

1.Calcium

2.Barium

3.Strontium

4.Potassium.


Question:
Alcohol dissolves in

1.LiCl

2.NaCl

3.KCl

4.RbCl.


Question:
Natural gas is the richest source of

1.Helium

2.Neon

3.Argon

4.Xenon.


Question:
Potassium crystallizes in a body centred lattice. Hence the coordination number of potassium is

1.6

2.8

3.4

4.12


Question:
Sapphire is a mineral of

1.Mg

2.Al

3.B

4.Au.


Question:
The alkali metal that reacts with nitrogen directly to form nitride is

1.Na

2.K

3.Rb

4.Li.


Question:
The alkali metal with highest melting point is

1.K

2.Na

3.Cs

4.Li.


Question:
The colour imparted by lithium to the flame is

1.Golden yellow

2.Grassy green

3.Violet

4.Red.


Question:
The lightest alkali metal is

1.Lithium

2.Sodium

3.Rubidium

4.Caesium.


Question:
The most easily polarisable noble gas is

1.Krypton

2.Xenon

3.Helium

4.Argon.


Question:
The most reactive alkali metal among the following is

1.Li

2.Na

3.Rb

4.Cs.


Question:
What is true about the oxoacids of halogens.

1.All of them are good reducing agents

2.All of them are monobasic

3.They may be monobasic as well as polybasic

4.They have general formula HXO.


Question:
When calcium is heated in the flame of a Bunsen burner the colour imparted to the flame is

1.Golden yellow

2.Brick red

3.Crimson red

4.Grassy green.


Question:
Which among the following is least soluble in water?

1.NaF

2.KF

3.LiF

4.CsF.


Question:
Which halogen forms interhalogen compound but does not form polyhalide ion?

1.Fluorine

2.Bromine

3.Iodine

4.All of the above.


Question:
Which hydroxide decomposes on heating?

1.NaOH

2.KOH

3.LiOH

4.RbOH.


Question:
Which of the following compounds has maximum covalent character?

1.LiF

2.LiCl

3.NaCl

4.CsCl.


Question:
Which of the following compounds has the highest melting point?

1.LiCl

2.NaCl

3.KCl

4.CsCl.


Question:
Which of the following does not contain iodine.

1.Tincture iodine

2.Caliche

3.Sea weeds

4.Carnallite.


Question:
Which of the following halogen is called super halogen?

1.Fluorine

2.Chlorine

3.Iodine

4.Bromine.


Question:
Which of the following is the most abundant alkaline earth metal?

1.Be

2.Mg

3.Ca

4.Sr.


Question:
Which of the following is the strongest reducing agent?

1.Be

2.Mg

3.Ca

4.Sr.


Question:
Which of the following is the weakest base ?

1.KOH

2.NaOH

3.LiOH

4.RbOH.


Question:
Which of the following metals on reaction with excess oxygen forms superoxide?

1.Li

2.Na

3.Mg

4.K.


Question:
Which of the following reacts with excess oxygen to forma normal oxide?

1.Li

2.Na

3.K

4.Rb.


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