Chemistry mcqs with answers pdf
What is the chemical symbol for oxygen?
a) Ox
b) O
c) Oc Chemistry mcqs with answers pdf chemistry mcqs with answers pdf
d) Om Chemistry mcqs with answers pdf chemistry mcqs with answers pdf
Correct Answer: b) O
Which of the following is a noble gas?
a) Hydrogen (H)
b) Nitrogen (N)
c) Helium (He)
d) Carbon (C) chemistry mcqs with answers pdf chemistry mcqs with answers pdf
Correct Answer: c) Helium (He)
What is the chemical formula for water?
a) CO2 chemistry mcqs with answers pdf chemistry mcqs with answers pdf
b) H2O chemistry mcqs with answers pdf chemistry mcqs with answers pdf
c) CH4
d) O2 chemistry mcqs with answers pdf chemistry mcqs with answers pdf
Correct Answer: b) H2O
Which element is essential for combustion to occur?
a) Nitrogen (N)
b) Carbon (C)
c) Oxygen (O)
d) Hydrogen (H)
Correct Answer: c) Oxygen (O)
What is the chemical symbol for sodium?
a) Sa
b) So
c) Sn
d) Na
Correct Answer: d) Na
Which of the following is a greenhouse gas?
a) Oxygen (O2)
b) Nitrogen (N2)
c) Carbon dioxide (CO2)
d) Helium (He)
Correct Answer: c) Carbon dioxide (CO2)
What is the atomic number of carbon?
a) 6
b) 12
c) 16
d) 22
Correct Answer: a) 6
Which of the following is an alkali metal?
a) Sodium (Na)
b) Iron (Fe)
c) Calcium (Ca)
d) Aluminum (Al)
Correct Answer: a) Sodium (Na)
What is the chemical symbol for iron?
a) Ir
b) Fe
c) I
d) F
Correct Answer: b) Fe
Which of the following is a halogen?
a) Sodium (Na)
b) Fluorine (F)
c) Potassium (K)
d) Calcium (Ca)
Correct Answer: b) Fluorine (F)
What is the chemical formula for methane?
a) CH3OH
b) CO2
c) CH4
d) H2O
Correct Answer: c) CH4
_________ element provides the majority of the Earth’s atmosphere.
a) Nitrogen (N)
b) Oxygen (O)
c) Carbon (C)
d) Helium (He)
Correct Answer: a) Nitrogen (N)
What is the chemical symbol for potassium?
a) Ka
b) Po
c) K
d) Pt
Correct Answer: c) K
What is the pH of a neutral solution?
a) 7
b) 1
c) 14
d) 0
Correct Answer: a) 7
Which element is the main component of diamonds?
a) Gold (Au)
b) Carbon (C)
c) Silver (Ag)
d) Iron (Fe)
Correct Answer: b) Carbon (C)
What is the chemical formula for table salt?
a) NaOH
b) HCl
c) NaCl
d) CaCl2
Correct Answer: c) NaCl
Which gas is produced during photosynthesis?
a) Carbon dioxide (CO2)
b) Oxygen (O2)
c) Nitrogen (N2)
d) Hydrogen (H2)
Correct Answer: b) Oxygen (O2)
What is the chemical symbol for silver?
a) Ag
b) Si
c) Au
d) Sr
Correct Answer: a) Ag
Which element is the most abundant in the universe?
a) Hydrogen (H)
b) Oxygen (O)
c) Helium (He)
d) Carbon (C)
Correct Answer: a) Hydrogen (H)
What is the chemical formula for ammonia?
a) NH3
b) H2O
c) CH4
d) CO2
Correct Answer: a) NH3
Which of the following is a transition metal?
a) Sodium (Na)
b) Iron (Fe)
c) Potassium (K)
d) Calcium (Ca)
Correct Answer: b) Iron (Fe)
What is the chemical symbol for mercury?
a) Hg
b) Me
c) Hy
d) Mr
Correct Answer: a) Hg
Which gas is responsible for the greenhouse effect?
a) Oxygen (O2)
b) Nitrogen (N2)
c) Carbon dioxide (CO2)
d) Argon (Ar)
Correct Answer: c) Carbon dioxide (CO2)
What is the chemical formula for sulfuric acid?
a) H2SO4
b) NaCl
c) HCl
d) CO2
Correct Answer: a) H2SO4
Which element is commonly used in batteries?
a) Lithium (Li)
b) Sodium (Na)
c) Potassium (K)
d) Calcium (Ca)
Correct Answer: a) Lithium (Li)
Which of the following is a noble gas?
a) Oxygen
b) Neon
c) Hydrogen
d) Nitrogen
Correct Answer: b) Neon
What is the chemical symbol for gold?
a) Au
b) Ag
c) Fe
d) Cu
Correct Answer: a) Au
Which element is essential for making steel?
a) Iron
b) Carbon
c) Calcium
d) Silicon
Correct Answer: a) Iron
What is the chemical formula for hydrogen peroxide?
a) H2O
b) HCl
c) H2O2
d) CO2
Correct Answer: c) H2O2
Which of the following is a greenhouse gas?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Helium
Correct Answer: b) Carbon dioxide
What is the atomic number of carbon?
a) 6
b) 12
c) 14
d) 16
Correct Answer: a) 6
Which gas is responsible for the smell of rotten eggs?
a) Oxygen
b) Carbon dioxide
c) Sulfur dioxide
d) Nitrogen
Correct Answer: c) Sulfur dioxide
What is the chemical symbol for silver?
a) Ag
b) Si
c) Au
d) Sn
Correct Answer: a) Ag
Which of the following is a halogen?
a) Sodium
b) Fluorine
c) Potassium
d) Calcium
Correct Answer: b) Fluorine
What is the pH of a neutral solution?
a) 0
b) 7
c) 14
d) 10
Correct Answer: b) 7
Which element is found in all organic compounds?
a) Carbon
b) Oxygen
c) Hydrogen
d) Nitrogen
Correct Answer: a) Carbon
What is the chemical symbol for potassium?
a) K
b) Pt
c) Pb
d) Kr
Correct Answer: a) K
Which of the following is a transition metal?
a) Zinc
b) Nickel
c) Aluminum
d) Magnesium
Correct Answer: b) Nickel
What is the chemical formula for ammonia?
a) NH3
b) H2O
c) CH4
d) CO2
Correct Answer: a) NH3
Which gas is used in balloons to make them float?
a) Helium
b) Oxygen
c) Nitrogen
d) Carbon dioxide
Correct Answer: a) Helium
What is the chemical formula for table salt?
a) NaOH
b) HCl
c) NaCl
d) CaCl2
Correct Answer: c) NaCl
What is the chemical symbol for mercury?
a) Hg
b) Me
c) Hy
d) Mr
Correct Answer: a) Hg
What is the chemical formula for sulfuric acid?
a) H2SO4
b) NaCl
c) HCl
d) CO2
Correct Answer: a) H2SO4
Which element is commonly used in batteries?
a) Lithium
b) Sodium
c) Potassium
d) Calcium
Correct Answer: a) Lithium
What is the chemical symbol for lead?
a) Le
b) Li
c) Pb
d) Pl
Correct Answer: c) Pb
Which of the following is a non-metal?
a) Sodium
b) Iron
c) Oxygen
d) Calcium
Correct Answer: c) Oxygen
What is the chemical formula for carbon dioxide?
a) CO
b) CO2
c) CO3
d) C2O2
Correct Answer: b) CO2
Which element is essential for plant growth?
a) Carbon
b) Oxygen
c) Nitrogen
d) Phosphorus
Correct Answer: c) Nitrogen
What is the chemical symbol for copper?
a) Cu
b) Co
c) Cp
d) Cr
Correct Answer: a) Cu
Which gas is produced during respiration?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Correct Answer: b) Carbon dioxide
What is the chemical symbol for potassium permanganate?
a) KMnO2
b) KCl
c) K2SO4
d) KNO3
Correct Answer: a) KMnO2
Which element is used in fluorescent lights?
a) Neon
b) Argon
c) Mercury
d) Xenon
Correct Answer: c) Mercury
What is the chemical formula for hydrochloric acid?
a) HCl
b) H2SO4
c) NaOH
d) NaCl
Correct Answer: a) HCl
Which gas is used in fire extinguishers?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Argon
Correct Answer: b) Carbon dioxide
What is the chemical symbol for nitrogen?
a) Ni
b) No
c) N
d) Na
Correct Answer: c) N
Which element is found in all acids?
a) Oxygen
b) Hydrogen
c) Nitrogen
d) Carbon
Correct Answer: b) Hydrogen
What is the chemical formula for methane?
a) CH4
b) CO2
c) H2O
d) NH3
Correct Answer: a) CH4
Which gas is produced during fermentation?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Correct Answer: b) Carbon dioxide
What is the chemical symbol for phosphorus?
a) Po
b) Pg
c) P
d) Pr
Correct Answer: c) P
Which of the following is a metalloid?
a) Silicon
b) Sodium
c) Sulfur
d) Selenium
Correct Answer: a) Silicon
What is the chemical formula for vinegar?
a) CH4
b) H2O
c) NaCl
d) CH3COOH
Correct Answer: d) CH3COOH
Which element is commonly used in pencils?
a) Lead
b) Carbon
c) Iron
d) Zinc
Correct Answer: a) Lead
What is the chemical symbol for helium?
a) H
b) He
c) Ho
d) Hy
Correct Answer: b) He
Which of the following is a halide?
a) Fluorine
b) Calcium
c) Magnesium
d) Potassium
Correct Answer: a) Fluorine
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