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Chemistry
Which acid is found in lemons
A
Citric acid
B
Acetic acid
C
Sulfuric acid
D
Carbonic acid
Correct Answer
A
Chemistry
CO? is called:
A
Carbon monoxide
B
Carbon dioxide
C
Calcium oxide
D
Cobalt oxide
Correct Answer
B
Chemistry
Which particle has a negative charge?
A
Proton
B
Nucleus
C
Neutron
D
Electron
Correct Answer
D
Chemistry
The process of losing electrons is called:
A
Hydrolysis
B
Oxidation
C
Reduction
D
Neutralization
Correct Answer
B
Chemistry
Which metal is liquid at room temperature?
A
Aluminium
B
Mercury
C
Copper
D
Iron
Correct Answer
C
Chemistry
The SI unit of amount of substance is:
A
Gram
B
Mole
C
Kilogram
D
Liter
Correct Answer
B
Chemistry
The chemical symbol of Gold is:
A
Gu
B
Gd
C
Au
D
Ag
Correct Answer
C
Chemistry
Which element is known as the lightest element?
A
Helium
B
Hydrogen
C
Nitrogen
D
Oxygen
Correct Answer
B
Chemistry
Which acid is present in vinegar?
A
Sulfuric acid
B
Hydrochloric acid
C
Acetic acid
D
Nitric acid
Correct Answer
C
Chemistry
Which particle has no charge?
A
Proton
B
Electron
C
Neutron
D
Ion
Correct Answer
C