Send-up Exam, Nov2020
Version 04
Times: 20 Min Paper:
Chemistry Class: X Marks:12
Name
_______
Sub.
Teacher: Miss Sara
NOTE: Section A is
compulsory. All parts of this section are to be answer. It should be completed
in the first 20 Minutes. Deleting / overwriting are not allowed.
Section
– A (Marks 12)
Q: 1. Circle
the correct option i.e. A / B / C/ D.
i.
Which of the following cannot be classified as
Arrhenius acid?
a)
HNO3 c) H2 CO3
b)
CO2 d) H2 SO4
ii.
Which of the following is a Lewis base?
a)
BF3 c) HCl
b)
AlCl3 d)
F --
iii.
NH3 cannot
be classified as a base by :
a)
Lewis theory c)
Arrhenius theory
b)
Bronsted – Lowry theory d) All of these
iv.
Ammonia is a base , because it :
a)
Ionizes in water to give OH – Ions c) Can accept an electron pair
b)
Contain OH group d) Can accept
proton
v.
A drain cleaner solution contains 1.0 X 10 -8 M, OH -
Concentration. This solution is
a)
Acidic
c) Basic
b)
Neutral
d) Cannot be predicted
vi.
In which of the following reaction which species is
donating an electron pair?
NH3 + BF3 H3 N – BF3
a)
H
b) N c)
BF3 d ) B --
vii.
If an Alkane having 5 carbon atoms than the number
of hydrogen atoms in this alkane will be
a)
05 b) 10 c) 12 d) 15
viii.
Ultraviolet radiation are absorbed by Ozone in the
stratosphere, that is why:
a)
Temperature of stratosphere increases c)
Temperature of stratosphere decreases
b)
Ozone layer is destroyed d) Ozone holes are formed
ix.
Marble buildings and statues are; destroyed by acid
rain due to reaction of Sulphuric acid with:
a)
Fe b) Ca ( NO3 )2
c) FeSO4 d) CaCO3
x.
What
process produces an alkane?
a)
Hydrogenation
b) Combustion c)
Hydration d)
Dehydration
xi.
Highest temperature in Mesosphere is:
a)
-55 C
b) -93 C c)
-5 C d) -60
C
xii.
Which of the following is evolved during the
ripening of fruits and vegetables?
a)
Methane
b) Ethane c)
Ethanal d) Ethene
_____________________________________________________________________________________
For
Examiner’s use only Marks Obtained
Send-up Exam, Nov2020
Version 04
Times: 20 Min Paper:
Chemistry Class: X Marks:12
Name
_______
Sub.
Teacher: Miss Sara
NOTE: Section A is
compulsory. All parts of this section are to be answer. It should be completed
in the first 20 Minutes. Deleting / overwriting are not allowed.
Section
– A (Marks 12)
Q: 1. Circle
the correct option i.e. A / B / C/ D.
i.
Which of the following cannot be classified as
Arrhenius acid?
a)
HNO3 c) H2 CO3
b)
CO2 d) H2 SO4
ii.
Which of the following is a Lewis base?
a)
BF3 c) HCl
b)
AlCl3 d)
F --
iii.
NH3 cannot
be classified as a base by :
a)
Lewis theory c)
Arrhenius theory
b)
Bronsted – Lowry theory d) All of these
iv.
Ammonia is a base , because it :
a)
Ionizes in water to give OH – Ions c) Can accept an electron pair
b)
Contain OH group d) Can accept
proton
v.
A drain cleaner solution contains 1.0 X 10 -8 M, OH -
Concentration. This solution is
a)
Acidic
c) Basic
b)
Neutral
d) Cannot be predicted
vi.
In which of the following reaction which species is
donating an electron pair?
NH3 + BF3 H3 N – BF3
a)
H
b) N c)
BF3 d ) B --
vii.
If an Alkane having 5 carbon atoms than the number
of hydrogen atoms in this alkane will be
a)
05 b) 10 c) 12 d) 15
viii.
Ultraviolet radiation are absorbed by Ozone in the
stratosphere, that is why:
a)
Temperature of stratosphere increases c)
Temperature of stratosphere decreases
b)
Ozone layer is destroyed d) Ozone holes are formed
ix.
Marble buildings and statues are; destroyed by acid
rain due to reaction of Sulphuric acid with:
a)
Fe b) Ca ( NO3 )2
c) FeSO4 d) CaCO3
x.
What
process produces an alkane?
a)
Hydrogenation
b) Combustion c)
Hydration d)
Dehydration
xi.
Highest temperature in Mesosphere is:
a)
-55 C
b) -93 C c)
-5 C d) -60
C
xii.
Which of the following is evolved during the
ripening of fruits and vegetables?
a)
Methane
b) Ethane c)
Ethanal d) Ethene
_____________________________________________________________________________________
For
Examiner’s use only Marks Obtained
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