Q1) What is the atomic number of carbon?

a) 6

b) 12

c) 24

d) 14

Q2) Which of the following is a noble gas?

a) Helium

b) Oxygen

c) Nitrogen

d) Hydrogen

Q3) What is the chemical symbol for iron?

a) Fe

b) Ir

c) In

d) Io

Q4) How many electrons are present in a neutral atom of oxygen?

a) 6

b) 7

c) 8

d) 9

Q5) What is the chemical formula for water?

a) H2O

b) CO2

c) NH3

d) HCl

Q6) Which of the following is a halogen?

a) Sodium

b) Chlorine

c) Potassium

d) Calcium

Q7) What is the molecular formula of methane?

a) CH4

b) CO2

c) H2O

d) NH3

Q8) What is the formula for sodium chloride?

a) NaCl

b) Na2Cl

c) NaCl2

d) Na2Cl2

Q9) Which of the following is a non-metal?

a) Sodium

b) Copper

c) Carbon

d) Silver

Q10) What is the SI unit of temperature?

a) Kelvin

b) Celsius

c) Fahrenheit

d) Rankine

Q11) What is the formula for sulfuric acid?

a) H2SO4

b) HCl

c) H2CO3

d) HNO3

Q12) Which of the following elements is a metalloid?

a) Silicon

b) Iron

c) Aluminum

d) Zinc

Q13) What is the chemical formula for ammonia?

a) NH4

b) NH3

c) NH2

d) NH

Q14) What is the chemical formula for carbon dioxide?

a) CO

b) CO3

c) CO2

d) C2O

Q15) What is the pH value of a neutral solution?

a) 0

b) 7

c) 14

d) -7

Q16) What is the chemical symbol for gold?

a) Au

b) Ag

c) Al

d) Fe

Q17) What is the formula for methane?

a) CH3

b) CH4

c) C2H4

d) C3H8

Q18) What is the chemical formula for hydrogen peroxide?

a) H2O2

b) H2O

c) HO

d) HCl

Q19) What is the chemical formula for table salt?

a) Na2SO4

b) NaCl

c) NaOH

d) Na2CO3

Q20) What is the chemical formula for glucose?

a) C6H12O6

b) CH4

c) CO2

d) H2O