Fsc Part 1 Chemistry MCQ's Test For Full Book With Answers

Fsc Part 1 Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1

Which of the following statemetns about ideal gases is true.

 <p>they have strong intermolecular forces</p> <p>Their particles have significant volume</p> <p>Their volume is mainly due to particle size</p> <p>They have negligible intermolecular forces</p>
2

Which one of the following effects explains the cooling during the sudden expasion of a gas.

 <p>Boyle&#39;s Effect</p> <p>Joule Thomson Effect</p> <p>Charles Effect</p> <p>Avogadr&#39;s law</p>
3

Liquid crystals exhibit properties.

 <p>Only like solids</p> <p>Only like liquid</p> <p>Between solids and liquids</p> <p>Unliek solids or liquids</p>
4

Which type of intermolecular force is present in all types of moleclues regardless of their polarity.

 <p>Dipole -dipole forces</p> <p>London dispersion forces</p> <p>Hydrogen bonds</p> <p>Ion dipole forces</p>
5

Which of the following is a characteristic property of crystalling solids.

 <p>they have a range of melting points&nbsp;</p> <p>They are isotrople</p> <p>they have adefinite and sharp melting point</p> <p>They lack a regular arrangeness of particles</p>
6

Why can gases be compressed easily.

 <p>Because they have strong intermolecular forces</p> <p>Becasue their particles are lightly packed</p> <p>Because most of their volume is empty space</p> <p>Beacuse they are denser than solids</p>
7

Which  state of matter exists only within a narrow range of temperature and presssure.

 <p>Liquid</p> <p>Solid</p> <p>Gas</p> <p>Plasma</p>
8

Surface tensin of liquid is due to.

 <p>Inword pull of surface molecule</p> <p>Upard pull from&nbsp; the surface</p> <p>Collision of molecules</p> <p>Repulsive forces</p>
9

When water freezes at 0 oC its density decrease due to.

 <p>Cubic structur eof ice</p> <p>Empty spces&nbsp; &nbsp;present&nbsp; in the structure of ice</p> <p>Derease in volume</p> <p>Decrease in viscosity</p>
10

When the vapour pressure of a liquid equals the external pressure, what phenomenon occurs.

 <p>Sublimation</p> <p>Bioling</p> <p>Freezing</p> <p>condensation</p>
11

London dispersion forces are teh only forces present among.

 <p>Molecules of water in liquid state</p> <p>Atoms of helium in gaseous stat at high temperature</p> <p>Molecuels of solid iodine</p> <p>Molecules of hydrogen chloride gas</p>
12

If 16 g of O2 react with excess C2H6,how many gamof CO2 will be formed.   2C2H6+7O2-----------------4CO2 +5H2O

 <p>22 g</p> <p>13 g</p> <p>9 g</p> <p>7g</p>
13

A mixture of 8 g of H2 with  8 g of O2 is ignited 2H2 +O2----------------2H2O  What is the mass of water formed.

 <p>9 g</p> <p>36 g</p> <p>16 g</p> <p>72 g</p>
14

How many moles of water are proeuced by buringing 4 moles of H2 with excess of oxygen.

 <p>1 mole</p> <p>2moles</p> <p>3 moles</p> <p>4 moles</p>
15

The reatant which consumes earlier and gives lest quantity of product is called.

 <p>Reactant</p> <p>Limiting reacant</p> <p>Stiochiometry</p> <p>Stoichiometric amount</p>
16

A limiting  reactatn is the one which

 <p>Is taken on lesser quantity in gram&nbsp; to compared to other reactionts</p> <p>Is taken in lesser quantity in volume as compared to the other reactants</p> <p>Gives the maximum amount o fthe produce which is required</p> <p>Gives teh minimum amountof the proudcut under considerationn&nbsp;</p>
17

What the mass of oxygen obtaingng from 72 g of pure water.

 <p>16 g</p> <p>32 g</p> <p>64 g</p> <p>72 g</p>
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