Entry Test MCQ :: Periodic Classification

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31.

The property which increases upto group IV-A then decreases onwards

A.	Ionization energy	B.	Atomic radii
C.	Melting & boiling points	D.	Atomic volume

32.

Which of the following ion is stable in aqueous solution?

A.	H+	B.	H-
C.	Cl-	D.	All are stable

33.

The atoms of same element having same atomic number but different mass number are called

A.	Isobars	B.	Isomers
C.	Isotopes	D.	Isotropes

34.

Deuterium reacts with oxygen to form

A.	Hard water	B.	Heavy water
C.	Soft water	D.	Water gas

35.

Which order of ionization energy is correct

A.	Mg < A1	B.	Si > P
C.	Mg > A1	D.	both b & c

36.

Ionization energy depends upon

A.	Nuclear charge	B.	Atomic size
C.	Shielding effect	D.	I.E depends upon all of the above and nature of orbital

37.

Shielding effect across the period

A.	Increases	B.	Decreases
C.	Can not be predicted	D.	Remains constant

38.

Addition of 2nd electron to a uninegative ion is always

A.	Exothermic	B.	Endothermic
C.	Data is insufficient	D.	Unpredictable

39.

Higher value of electron affinity means

A.	Atom will lose electron easily	B.	Atom will gain electron easily
C.	Atom may form di-positive ion	D.	The reason is unknown

40.

Metallic characters of alkali metals

A.	Increase down the group	B.	Decrease down the group
C.	No regular trend	D.	Remain same