Chemistry Past Paper Questions

Change Subject
Q 131:The reduction of alkyl halides takes place in the presence of:
A
Zn/HCl
B
Na/HCl
C
Mg/HCl
D
Cu/HCl
Gujranwala, 2019
View Answer
Q 132:The substances formed during the chemical reaction are called:
A
Products
B
Reactants
C
Radicals
D
Elements
Gujranwala, 2019
View Answer
Q 133:Urea is a nitrogenous fertilizer. It consists of ___________ % nitrogen.
A
26.6
B
46.6
C
56.6
D
66.6
Gujranwala, 2019
View Answer
Q 134:Which gas protects the earth from ultraviolet radiations?
A
CO2 gas
B
SO2
C
Nox
D
O3
Gujranwala, 2019
View Answer
Q 135:Which one of the following disease causes severe diarrhea and can be fatal?
A
Jaundice
B
Dysentery
C
Cholera
D
Typhoid
Gujranwala, 2019
View Answer
Q 136:Which one of the following gases is used to destroy harmful bacteria in water?
A
Iodine
B
Chlorine
C
Flourine
D
Bromine
Gujranwala, 2019
View Answer
Q 137:Which of the following is a heterogeneous mixture?
A
Sugar Solution
B
milk of magnesia
C
ink
D
milk
Gujranwala, 2019
View Answer
Q 138:Which of the following is a weak electrolyte?
A
NaCl
B
NaOH
C
CH3COOH
D
H2SO4
Gujranwala, 2019
View Answer
Q 139:Which of the following is the weakest force among the atoms?
A
Ionic force
B
Metallic force
C
covelent force
D
Intermolecular force
Gujranwala, 2019
View Answer
Q 140:The type of bond in which bond pair is donated by one bonded atom is called __________ bond:
A
ionic
B
covalent
C
metallic
D
coordinate covalent
Gujranwala, 2019
View Answer
Total MCQs: 1548Page 14 of 155
Previous14151617181920212223Next
Subjects
Biology
Chemistry
English
Islamiat
Pakistan Studies
Physics