Entry Test MCQ :: Periodic Classification

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21.

Amphoteric exides are those which possess ________ properties

A.	Acidic	B.	Basic
C.	Acidic and basic	D.	Neutral and acidic

22.

Best position of hydrogen in the periodic table is above I.A Group which is mainly due to

A.	Both are electropositive	B.	Similar outer most shell electronic configuration
C.	Both form ionic compounds	D.	All

23.

Hydrogen resembles with carbon because of having

A.	Same number of electrons in the valence shell	B.	Similar physical state
C.	Remarkable reducing properties	D.	Homovalent (show same valency)

24.

Which one of the following sets consists of all coinage metals?

A.	Cu Hg Au	B.	Cu Ag Au
C.	Ag Au Hg	D.	Cu Fe Au

25.

In which of the following pairs are elements belonging to the same group?

A.	Boron & Beryllium	B.	Nitrogen & Phosphorous
C.	Magnesium & Aluminium	D.	Gallium & Helium

26.

Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way?

A.	The nature of its oxides	B.	The charge on its ions
C.	The formula of its oxide	D.	Its number of isotopes

27.

Which one of the following is not a periodic property?

A.	Melting point of elements	B.	Boiling point of elements
C.	Ionization energy of elements	D.	Coordination number of ions

28.

The atomic radii decreases by increasing atomic number in

A.	Alkali metal	B.	Alkaline earth metal
C.	Elements from Li to Ne	D.	Halogens

29.

Which discovery caused a revision in the periodic law as stated by Mendeleev?

A.	Location of nucleus by Rutherford	B.	Atomic number by Moseley
C.	X-rays by Roentgen	D.	Natural radioactivity by Henry Bacquerel.

30.

An element has electronic conviguration 1s2 2s2 2p2. It belongs to

A.	Group II-A	B.	Group IV-A
C.	Group VII-A	D.	Group VI-A