Question # 1

Excluding H-atom , Hydrogen bond never involves more than atoms.

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One

Two

Three

Four

Which of the following is the most abundant alkaline earth metal.

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Be

Mg

Ca

Sr

Which of the following ions does not have the electronic configuration same as that of neon.

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F-

O2-

Na+

Ca2+

Sodium reacts with excess of oxygen to form

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Na2O

NaO2

Na2O2

NaO

Used in Geiger counter to detect radioactivity

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He

Ne

Ar

Kr

In the purification of bauxite , the ore is fused with sodium carbonate in the process

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Baeyer's process

Hall's process

Serpeck's process

Any of above

Coordination compound show

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Structural isomerism

Stereo isomerism

Both A and B

None of above

Which of the following is the active ingredient in ordinary household bleach.

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HCl

Cl2

NaCl

NaCIO

Acid rain effects

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Human being

Crops

Aquatic life

All above

The ion that is isoelectornic with CO is

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CN-

O2+

CO2-

N2+

Which metal can produce dihydrogen gas by reaction with dil H2SO4

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Ag

Fe

Cu

Pt

The hybridization of S in SO2 is.

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sp

sp2

sp3

dsp2

Aluminum is usually extracted from

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Bauxite

Corundum

Feldepar

Alumite

The concept is also known as electron pair donor acceptor system.

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Bronsted Lowery

Lewis

Lux -Flood

Usanovich

B.P of heavy water is

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equal to that of ordinary water

greater than that of ordinary water

Less than that of ordinary water

equal to that of distilled water

In each period, the most electropositive element belongs to group.

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18

17

1

2

Finely divided iron combines with CO to give.

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Fe(CO)5

Fe2(CO)9

Fe(CO)12

Fe(CO)6

The strongest acid is.

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HNO2

HNO3

H2N2O2

HNOS

The elements with highest electron affinity belongs to.

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Period 2 , group 17

Period 3, group 17

Period 2, group 18

Period, 2 , group 1

Greenish yellow gas with pungent irritating odour

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Chlorine

Fluorine

Iodine

Bromine

Elements of group 14 have the electronic configuration of their outer shell as

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ns2 np3

ns2 np2

ns2 np6

ns2

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