Question # 1

Which element has highest ionization potential

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Li

Na

K

Rb

VSEPR theory was proposed by

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Nyholn and Gillespie

Kossel

Lewis

Sidwick

Which one of the following has the greater ionic characters in it.

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HF

HCl

H2O

H2

Which of the following species has unpaired electrons in anti bonding molecular orbitals

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O2

N2

B2

F2

In which molecule all atoms are coplanar.

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CH4

BF3

NH3

PH3

A molecule has two ions pairs and two bond pairs around the central atom. The shape of molecule is.

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Linear

Pyramidal

Angular

Tetrahedral

In methanol, bond between carbon and oxygen.

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Ionic

Non polar

Polar

Co - ordinate

Forces of attraction between He atoms are.

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Hydrogen bonding

London forces

Debye forces

Ion dipole forces

The shielding effect of the inner electrons is responsible for

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Increasing ionization energy values

Decreasing ionization energy values

Increasing electron affinity

Increasing electonegativity

Molecule in which the distance between two carbon atoms in the largest is.

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C2H6

C2H4

C2H2

C6H6

Which of the hydrogen halides has the highest percentage of ionic character.

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HF

HBr

HCl

HI

Suppose a new element 'J' has discovered and has seven electron in the valence shell. Which statement about this element would be correct.

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It is monatomic

It form covalent bond with hydrogen

It forms stable positive ion

It forms covalent bond with group IA element

Which element has highest ionization potential.

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Li

B

Be

C

How many sigma and pi bonds are present in C2H2.

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one sigma and two pi

two pi and one sigma

Two pi and three sigma

Three pi and two sigma

The shape of H₃O is

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Tetrahedral

Angular

Trigonal planer

Pyramidaj

The number of bonds in oxygen molecules.

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One sigma and One pi

One sigma and two Pi

Three sigma only

Two sig and two pi

Dipole moment is defined as.

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Charge x distance

Charge x Debye

Charge x displacement

Charge x bond energy

The number of bonds in nitrogen molecules is.

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One pi and one sigma

One pi and two sigma

Thre sigma only

Two pi and one sigma

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Chemistry Fsc Part 1 Chapter 6 Online Test MCQs With Answers

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