Question # 1

Which oxide is more basic in nature.

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Beo

MgO

CaO

BaO

Ionic Hydrides react with water to form

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Proton

Hydride ions

Hydroxide ions

Hydronium ions

The element of 2nd period, which has highest ionization energy from the following is

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Be

C

N

O

Which property of hydrogen not resemble to alkali metals.

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Electronic configuration

Oxidation state

Reaction with halogen

Metallic nature

Fluorine is in group VIIA of periodic table. Its chemistry will most closely resembles that of.

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Argon

Boron

Iodine

Sulphur

Mark the incorrect statement

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Metallic character increase down the group

Metallic character increase from left to right along a period

Metallic character decrease from left to right along a period

Metallic character remains the same down the group

Variable valency is generally exhibited by

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Transition elements

Alkali metals

s-block elements

Gaseous elements

Which one of the following oxides is amphoteric in nature.

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MgO

Na2O

SO2

ZnO

Number of elements in the first period of the periodic table is

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2

8

14

18

In modern periodic table VI period contains elements

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8

18

10

32

The first ionization energy of Na, Mg, Al and Si are in theorder of.

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Na < Mg < Al < Si

Na > Mg> Al> Si

Na > Mg< Al< Si

Na< Mg> Al< Si

Which of the following the highest hydration energy

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Li⁺

Na⁺

K⁺

Mg⁺⁺

Which hydride is intermediate in nature.

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NaH

BeH2

NH3

HCl

Which the correct statement

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Cl^-is smaller than Cl atom

Cl^-(Ion) and Cl (atom) are equal in size

Na⁺is smaller than Na atom

Na⁺is larger than Na atom

Correct order according to atomic size in the following is

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Na > K

Be > Mg

O > N

Cl > F

Which one of the following elements has the largest second ionization energy.

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O

Na

F

Ne

Which has greater hydration energy.

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Li+

Na+

K+

Mg+2

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