Prepare with MCQs
Thousands of verified questions for competitive exams
25K+
MCQs
15+
Categories
500+
Tests
Free
Access
All
๐ General Knowledge
๐ Current Affairs
๐ต๐ฐ Pakistan Affairs
โช Islamic Studies
๐ค English
๐ป Computer
๐งฎ Mathematics
โ Physics
๐งช Chemistry
๐งฌ Biology
๐ฌ Everyday Science
๐ฉโ๐ซ Pedagogy
ุงุฑุฏู Urdu
๐บ World Geography
๐ History
Chemistry
What is the pH of pure water at 25ยฐC?
A
5
B
6
C
7
D
9
Correct Answer
C
Chemistry
H?O is the chemical formula of:
A
Hidri
B
Air
C
Oxygen
D
Water
Correct Answer
D
Chemistry
What is the chemical symbol of Gold?
A
Ag
B
Gu
C
Au
D
Go
Correct Answer
C
Chemistry
Which acid is present in vinegar?
A
Hydrochloric acid
B
Acetic acid
C
Sulfuric acid
D
Nitric acid
Correct Answer
B
Chemistry
Which gas is released during photosynthesis?
A
Methian
B
Hydrogen
C
Oxygen
D
Nitrogen
Correct Answer
C
Chemistry
NaCl is commonly known as:
A
Baking soda
B
Common salt
C
Washing soda
D
Lime
Correct Answer
B
Chemistry
The nucleus of an atom contains:
A
Neutrons and electrons
B
Electrons only
C
Protons and neutrons
D
Protons
Correct Answer
C
Chemistry
Which element has the symbol Fe?
A
Fluorine
B
Iron
C
Francium
D
Zink
Correct Answer
B
Chemistry
Which is a noble gas?
A
Chlorine
B
Oxygen
C
Helium
D
Hydrogen
Correct Answer
C
Chemistry
The atomic number represents the number of
A
Shells
B
Neutron
C
Protons
D
Molecules
Correct Answer
C