Which element is the most abundant in the Earth’s crust?
a) Oxygen
b) Silicon
c) Aluminum
d) Iron
Answer: a) Oxygen
What is the chemical symbol for sodium?
a) S
b) Na
c) So
d) N
Answer: b) Na
Which element is the main constituent of limestone?
a) Carbon
b) Calcium
c) Oxygen
d) Hydrogen
Answer: b) Calcium
What is the formula for water?
a) H2O
b) CO2
c) NH3
d) HCl
Answer: a) H2O
Which element is commonly used in batteries?
a) Lithium
b) Sodium
c) Potassium
d) Calcium
Answer: a) Lithium
What is the chemical symbol for carbon?
a) C
b) Ca
c) Co
d) Cu
Answer: a) C
Which element is a non-metal?
a) Sodium
b) Oxygen
c) Calcium
d) Iron
Answer: b) Oxygen
What is the formula for carbon dioxide?
a) CO
b) CO2
c) C2O
d) C2O2
Answer: b) CO2
Which element is a halogen?
a) Sodium
b) Chlorine
c) Calcium
d) Iron
Answer: b) Chlorine
What is the chemical symbol for potassium?
a) K
b) P
c) Ko
d) Pt
Answer: a) K
Which element is commonly used in fertilizers?
a) Nitrogen
b) Oxygen
c) Silicon
d) Calcium
Answer: a) Nitrogen
What is the formula for ammonia?
a) NH4
b) NH3
c) NH2
d) NH
Answer: b) NH3
Which element is commonly used in glass production?
a) Sodium
b) Calcium
c) Silicon
d) Iron
Answer: c) Silicon
What is the chemical symbol for hydrogen?
a) H
b) He
c) Hy
d) Ho
Answer: a) H
Which element is a noble gas?
a) Neon
b) Nitrogen
c) Nickel
d) Sodium
Answer: a) Neon
What is the formula for table salt?
a) NaCl
b) KCl
c) HCl
d) CaCl2
Answer: a) NaCl
Which element is commonly used in construction materials?
a) Aluminum
b) Sodium
c) Lithium
d) Iron
Answer: a) Aluminum
What is the chemical symbol for iron?
a) I
b) Ir
c) Fe
d) In
Answer: c) Fe
Which element is commonly used in batteries and electronics?
a) Copper
b) Silver
c) Gold
d) Zinc
Answer: d) Zinc
What is the formula for hydrochloric acid?
a) HCl
b) H2SO4
c) HNO3
d) H2O
Answer: a) HCl
Which element is commonly used in electrical wiring?
a) Copper
b) Aluminum
c) Gold
d) Nickel
Answer: a) Copper
What is the chemical symbol for silver?
a) Ag
b) Au
c) Al
d) As
Answer: a) Ag
Which element is commonly used in steel production?
a) Iron
b) Calcium
c) Silicon
d) Aluminum
Answer: a) Iron
What is the formula for carbon monoxide?
a) CO
b) CO2
c) C2O
d) C2O2
Answer: a) CO
Which element is commonly used in fertilizer production?
a) Potassium
b) Sodium
c) Calcium
d) Nitrogen
Answer: d) Nitrogen
What is the chemical symbol for phosphorus?
a) P
b) Po
c) Ph
d) Ps
Answer: a) P
Which element is commonly used in medicine and healthcare products?
a) Oxygen
b) Calcium
c) Potassium
d) Sodium
Answer: d) Sodium
What is the formula for carbonic acid?
a) H2SO4
b) HCl
c) HNO3
d) H2CO3
Answer: d) H2CO3
Which element is commonly used in photography?
a) Silver
b) Aluminum
c) Iron
d) Zinc
Answer: a) Silver
What is the chemical symbol for calcium?
a) C
b) Co
c) Ca
d) Cu
Answer: c) Ca
Which element is commonly used in food preservation?
a) Sodium
b) Potassium
c) Calcium
d) Iron
Answer: a) Sodium
What is the formula for sulfuric acid?
a) HCl
b) H2SO4
c) HNO3
d) H2O
Answer: b) H2SO4
Which element is commonly used in photography and batteries?
a) Zinc
b) Silver
c) Iron
d) Aluminum
Answer: b) Silver
What is the chemical symbol for nitrogen?
a) N
b) Ni
c) No
d) Ne
Answer: a) N
Which element is commonly used in matches?
a) Sodium
b) Phosphorus
c) Calcium
d) Iron
Answer: b) Phosphorus
What is the formula for nitric acid?
a) HCl
b) H2SO4
c) HNO3
d) H2O
Answer: c) HNO3
Which element is commonly used in fireworks?
a) Sodium
b) Potassium
c) Calcium
d) Iron
Answer: b) Potassium
What is the chemical symbol for chlorine?
a) C
b) Cl
c) Co
d) Ca
Answer: b) Cl
Which element is commonly used in fertilizer production and soil enrichment?
a) Nitrogen
b) Oxygen
c) Silicon
d) Sodium
Answer: a) Nitrogen
What is the formula for hydrofluoric acid?
a) HCl
b) H2SO4
c) HF
d) H2O
Answer: c) HF
Which element is commonly used in fire extinguishers?
a) Carbon
b) Nitrogen
c) Oxygen
d) Sodium
Answer: b) Nitrogen
What is the chemical symbol for neon?
a) Ne
b) Na
c) Ni
d) No
Answer: a) Ne
Which element is commonly used in explosives?
a) Sodium
b) Potassium
c) Calcium
d) Nitrogen
Answer: d) Nitrogen
What is the formula for sulfur dioxide?
a) SO
b) SO2
c) SO3
d) S2O
Answer: b) SO2
Which element is commonly used in toothpaste and antacids?
a) Sodium
b) Calcium
c) Aluminum
d) Potassium
Answer: b) Calcium
What is the chemical symbol for aluminum?
a) Al
b) Au
c) Ag
d) As
Answer: a) Al
Which element is commonly used in antiperspirants and deodorants?
a) Sodium
b) Calcium
c) Aluminum
d) Iron
Answer: c) Aluminum
What is the formula for phosphoric acid?
a) HCl
b) H3PO4
c) HNO3
d) H2O
Answer: b) H3PO4
Which element is commonly used in the production of glass and ceramics?
a) Sodium
b) Calcium
c) Silicon
d) Aluminum
Answer: c) Silicon
What is the chemical symbol for oxygen?
a) O
b) Oh
c) Os
d) On
Answer: a) O
Which element is commonly used in the production of fertilizers and explosives?
a) Nitrogen
b) Oxygen
c) Silicon
d) Calcium
Answer: a) Nitrogen
What is the formula for sulfuric acid?
a) HCl
b) H2SO4
c) HNO3
d) H2O
Answer: b) H2SO4
Which element is commonly used in the production of glass and ceramics?
a) Sodium
b) Calcium
c) Silicon
d) Aluminum
Answer: c) Silicon
What is the chemical symbol for hydrogen?
a) H
b) He
c) Hy
d) Ho
Answer: a) H
Which element is a noble gas?
a) Neon
b) Nitrogen
c) Nickel
d) Sodium
Answer: a) Neon
What is the formula for table salt?
a) NaCl
b) KCl
c) HCl
d) CaCl2
Answer: a) NaCl
Which element is commonly used in construction materials?
a) Aluminum
b) Sodium
c) Lithium
d) Iron
Answer: a) Aluminum
What is the chemical symbol for iron?
a) I
b) Ir
c) Fe
d) In
Answer: c) Fe
Which element is commonly used in batteries and electronics?
a) Copper
b) Silver
c) Gold
d) Zinc
Answer: d) Zinc
What is the formula for hydrochloric acid?
a) HCl
b) H2SO4
c) HNO3
d) H2O
Answer: a) HCl
Which element is commonly used in electrical wiring?
a) Copper
b) Aluminum
c) Gold
d) Nickel
Answer: a) Copper
What is the chemical symbol for silver?
a) Ag
b) Au
c) Al
d) As
Answer: a) Ag
Which element is commonly used in steel production?
a) Iron
b) Calcium
c) Silicon
d) Aluminum
Answer: a) Iron
What is the formula for carbon monoxide?
a) CO
b) CO2
c) C2O
d) C2O2
Answer: a) CO
Which element is commonly used in fertilizer production?
a) Potassium
b) Sodium
c) Calcium
d) Nitrogen
Answer: d) Nitrogen
What is the chemical symbol for phosphorus?
a) P
b) Po
c) Ph
d) Ps
Answer: a) P
Which element is commonly used in medicine and healthcare products?
a) Oxygen
b) Calcium
c) Potassium
d) Sodium
Answer: d) Sodium
What is the formula for carbonic acid?
a) H2SO4
b) HCl
c) HNO3
d) H2CO3
Answer: d) H2CO3
Which element is commonly used in photography?
a) Silver
b) Aluminum
c) Iron
d) Zinc
Answer: a) Silver
What is the chemical symbol for calcium?
a) C
b) Co
c) Ca
d) Cu
Answer: c) Ca
