Chemistry Past Paper Questions

Change Subject
Q 1511:In laboratory urea was prepared by:
A
Wholer
B
Rutherford
C
Dalton
D
Berzellius
Sargodha, 2016
View Answer
Q 1512:In strong alkaline solution the colour of litmus becomes:
A
Pink
B
Yellow
C
Blue
D
Red
Sargodha, 2016
View Answer
Q 1513:Matte is a mixture of:
A
FeS and CuS
B
Cu2O and FeO
C
Cu2S and FeS
D
CuS and FeO
Sargodha, 2016
View Answer
Q 1514:Pitch is black residue of:
A
Coke
B
Coal tar
C
Coal
D
Coal Gas
Sargodha, 2016
View Answer
Q 1515:Normally rainwater is weakly acidic because of:
A
SO3 gas
B
SO2 gas
C
NO2 gas
D
CO2 gas
Sargodha, 2016
View Answer
Q 1516:Octet rule is
A
Attaining of eight electrons
B
Attaining of two electrons
C
Attaining of three electrons
D
Pattern of electronic configuration
Sargodha, 2016
View Answer
Q 1517:One amu atomic mass unit is equivalent to:
A
1.66 x 10-24 mg
B
1.66 x 10-24 g
C
1.66 x 10-23 g
D
1.56 x10-24 kg
Sargodha, 2016
View Answer
Q 1518:Oxidation number of all elements in the free state is:
A
+1
B
-1
C
0
D
+2
Sargodha, 2016
View Answer
Q 1519:Oxidation number of chromium in K2Cr2O7 is:
A
+2
B
+7
C
+14
D
+6
Sargodha, 2016
View Answer
Q 1520:M-shell accommodate maximum number of electrons.
A
32
B
18
C
8
D
2
Sargodha, 2016
View Answer
Total MCQs: 1548Page 152 of 155
Previous146147148149150151152153154155Next
Subjects
Biology
Chemistry
English
Islamiat
Pakistan Studies
Physics