Chemistry Fsc Part 1 Online Test With Answers

Chemistry Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1

Which of the followng statemtn not correct regarding bounding molecular oritals.

 <p>Bonding molecular orbital posses less energy than atomic orbitals&nbsp; from which they are formed</p> <p>Bonnding molecular orbitals have&nbsp; low electron density betwene the two nuclie</p> <p>Every electron in the boundg molecular orbitals contributes to the attraction between atoms.</p> <p>Bonding molecular orbitals are formed whn the electron waves undergo constructive interference&nbsp;</p>
2

Which of the following will show paramagnetic property.

 <p>O2</p> <p>N2</p> <p>O 2<sup> -2</sup></p> <p>O2 <sup>+2</sup></p>
3

Which of the following hybridizations is found in ethyne.

 <p>Sp</p> <p>sp2</p> <p>sp3</p> <p>No hybridization&nbsp;</p>
4

What is bond angele in NF3?

 <p>102<sup>o</sup></p> <p>109.5<sup>o</sup></p> <p>104,5<sup>o</sup></p> <p>107.5<sup>o</sup></p>
5

The bond angle in ethene molecule is.

 <p>120<sup>o</sup></p> <p>180<sup>o</sup></p> <p>109<sup>o</sup></p> <p>107.5<sup>o</sup></p>
6

Which type of hybridization of C occurs in CO2

 <p>SP</p> <p>sp2</p> <p>sp3</p> <p>dsp2</p>
7

Sp3 Hybridiztion ins associated wiht structure.

 <p>Linear</p> <p>Tretrahedral</p> <p>Trigonal</p> <p>Octahedra</p>
8

What is molecular geopetry of SO4 -2  ion.

 <p>Tetrahedra</p> <p>Trigonal Planar</p> <p>Trigonal pyramidal</p> <p>Linear</p>
9

Thnumebr of lone pair of electonrsein ammonium ion is 

 <p>One</p> <p>Two</p> <p>Three</p> <p>Zero</p>
10

The molecule with linear structure is

 <p>H2O</p> <p>CO2</p> <p>H2S</p> <p>BF3</p>
11

Dipole moment of CO2 is 

 <p>1.8 D</p> <p>1.94 D</p> <p>1.0 D</p> <p>Zero</p>
12

Dipole moment is the product of.

 <p>Charge x displacement</p> <p>Charge x distance</p> <p>Newton x displacement</p> <p>Charge x mass</p>
13

Which will have zero dipole moment

 <p>H2O</p> <p>BF3</p> <p>H2S</p> <p>CHCl3</p>
14

The molecuel with greatest dipole moment is.

 <p>H2O</p> <p>H2S</p> <p>NH3</p> <p>HF</p>
15

The expected bond energy of HCl is lesser than the actual, this is because.

 <p>Size of hydrogen is very small</p> <p>HCl is non polar compund</p> <p>HCl is a polar comoound</p> <p>There exists hydrogen bonding</p>
16

The actual bond length in a polar covalent compund is.

 <p>Lesser thanexpected</p> <p>Greeater ahtn expected</p> <p>Equal to the expected</p> <p>Exactly half of expected</p>
17

The bond formation energy of a compund is.

 <p>Equal to bond idssociation energy</p> <p>Less thanbond idssociation energy</p> <p>Greater than bond dissociaton energy</p> <p>Inverselyproportional to bond dissociation energy</p>
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