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191.

All the element in a group in the periodic table have the same
(a)Atomic weight
(b)Number of valance electrons
(c)Atomic number
(d)None of the above
Comment
Answer is: BNA

192.

The ionisation potential of nitrogen is
(a)Same as that of oxygen
(b)Less than that of oxygen
(c)Greater than that of oxygen
(d)None of the above
Comment
Answer is: CNA

193.

The long form of periodic table is based on
(a)Electronegativity
(b)Mass of the atom
(c)Shape of the atom
(d)Atomic number
Comment
Answer is: DNA

194.

In periodic table, metallic elements appear
(a)In the left-hand columns
(b)In the top rows
(c)In the right-hand columns
(d)In the bottom rows
Comment
Answer is: ANA

195.

The arrangement of Na, Rb, K, Cs in the increasing order of atomic Radius is
(a)Rb < K < Cs < Na
(b)K < Na < Cs < Rb
(c)Na < Cs < K < Rb
(d)Na < K < Rb < Cs
Comment
Answer is: DNA

196.

The total number of lanthanide elements is
(a)8
(b)32
(c)14
(d)10
Comment
Answer is: CNA

197.

The first element of rare earth metal is
(a)Cerium
(b)Actinium
(c)Uranium
(d)Lanthanum
Comment
Answer is: ANA

198.

Which one of the following metals occurs in nature in free state?
(a)Gold
(b)Sodium
(c)Aluminium
(d)Copper
Comment
Answer is: ANA

199.

Which is the purest form of the iron?
(a)Pig iron
(b)Cast iron
(c)Wrought iron
(d)Steel
Comment
Answer is: CNA

200.

In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?
(a)Copper
(b)Iron
(c)Aluminium
(d)Titanium
Comment
Answer is: DNA

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