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WorksheetsPre-Quiz
Total questions: 20
Worksheet time: 10mins
1) Properties of substance can be divided into two additional categories : intensive properties ( temperature etc ) and extensive properties ( mass etc). Which property is density in?
A. Intensive properties
B.Extensive properties
C.None of the above
D.I’m not sure
2) Which of the following are physical property?
(A)Boiling of ethanol
B) Condensation of water
(C) Conducting electricity
(D)Explosion of nitroglycerin
3) All of the options are characteristics of isotopes except
A. Same number of protons
B. Same atomic number
C. Same number of neutrons
D. Same number of electrons
What gas is produced when there is incomplete combustion?
a.CO2
b.CO
C.NO2
D.O2
What is the percentage composition of Carbon in C12H22O11?
a.42.1%
b.43.7%
c.44.8%
d.46.9%
Which of the following ionize 100% in a solvent?
a.Strong Electrolyte
b.Weak Electroyte
c.Organic solvent
d.Ionic solvent
what is the product of hydrocarbon combustion?
I. CO2
II. H2O
III. O2
IV . H2
A. II AND IV
B. I AND II
C. III AND IV
D. II AND III
state two types of displacement reaction.
i. single displacement
ii. double displacement
iii.triple displacement
iv.decomposition reaction
A.i and ii
B.i and iii
C.iii and iv
D.ii and iv
What type of electrolyte is H2O?
A. weak electroclyte
B. non- electrolyte
C.strong electrolyte
D. none of the above
When solid are heated,they ___________ radiation.
A.emit
B.absorb
C.release
D.receive
Number of nodes increases as n _________.
A.increase
B.decrease
C.constant
D.none of the above
For element period 4 and beyond , electrons having __________ spins are said to be paired when they are in the same orbital.
A.same direction
B.opposite direction
C.perpendicular direction
Metal oxides dissolves in water to form __?
A.metal hydroxide
B.salt
C.acid
D.water
What is the name of this oxide ion , O2- ?
A.oxygen
B.oxide
C.superoxide
D.peroxide
Choose the correct increase( negatively increase) in electron affinity for F ,Br , I , Cl and As
A.F<Cl<Br<I<As
B.Cl<I<As<F<Br
C.As<I<Br<Cl<F
D.Br<I<Cl< F<As
The C-O bonds in CO2 is
A.nonpolar covalent
B.ionic
C.metallic
DETERMINE THE MOLAR MASS OF A GAS WHOSE DENSITY IS 1.80g/L AT 25 DEGREE CELCIUS AND 880 TORR
A.40.O g/mol
B.38.0 g/mol
C.37.9 g/mol
D.39.0 g/mol
Cationic radius decreases when the effective nuclear charge on an ion…
a.decreases
b.remain same
c.increase
d.none
Given a container of helium gas with an initial volume of 43 L and temperature of 58 °C, calculate the volume if the temperature is changed to 6.9 °C.
a. 37 L
b. 34 L
c. 38 L
d. 36 L
2.3 moles of helium gas are at a pressure of 1.70 atm and at the temperature 41˚c , What is the volume of the gas ?
a. 4.56 L
b. 34.88 L
c. 424.82 L
d. 15.16 L
