Chemistry Jamb Past Questions and Answers

Chemistry Jamb Past Questions and Answers

Here are 20 sample questions with options and answers:

What is the chemical symbol for gold?

A) Ag

B) Ge

C) Au

D) Hg

Answer: C) Au

Which of the following elements is a noble gas?

A) Oxygen

B) Neon

C) Hydrogen

D) Carbon

Answer: B) Neon

How many protons are there in the nucleus of a carbon-12 atom?

A) 6

B) 12

C) 7

D) 20

Answer: A) 6

Which gas is responsible for the green color in plants?

A) Oxygen

B) Nitrogen

C) Carbon dioxide

D) Chlorophyll

Answer: D) Chlorophyll

What is the chemical formula for water?

A) H2O

B) CO2

C) O2

D) H2SO4

Answer: A) H2O

What is the pH value of a neutral solution?

A) 0

B) 7

C) 14

D) 1

Answer: B) 7

Which gas is produced when an acid reacts with a metal?

A) Oxygen

B) Hydrogen

C) Carbon dioxide

D) Nitrogen

Answer: B) Hydrogen

What is the chemical formula for methane?

A) CH4

B) CO2

C) H2O

D) C6H12O6

Answer: A) CH4

Which of the following is a halogen element?

A) Sodium

B) Potassium

C) Chlorine

D) Calcium

Answer: C) Chlorine

What is the chemical symbol for iron?

A) I

B) Fe

C) Ir

D) In

Answer: B) Fe

Which of the following is a noble gas?

A) Helium

B) Sodium

C) Potassium

D) Calcium

Answer: A) Helium

What is the formula of sodium chloride (table salt)?

A) Na2Cl

B) NaCl

C) NaCl2

D) Na2CO3

Answer: B) NaCl

Which of the following is a transition metal?

A) Zinc

B) Aluminum

C) Magnesium

D) Potassium

Answer: A) Zinc

What is the chemical formula for sulfuric acid?

A) H2SO4

B) HCl

C) HNO3

D) NaOH

Answer: A) H2SO4

What is the chemical formula for carbon dioxide?

A) CO

B) CO2

C) C2O4

D) C2H4

Answer: B) CO2

Which gas is responsible for the "greenhouse effect"?

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Methane

Answer: B) Carbon dioxide

What is the chemical symbol for silver?

A) Si

B) Ag

C) Au

D) Sr

Answer: B) Ag

What is the chemical formula for ammonia?

A) NH3

B) HNO3

C) CH4

D) H2O

Answer: A) NH3

Which element is the most abundant in Earth's crust?

A) Oxygen

B) Silicon

C) Carbon

D) Iron

Answer: A) Oxygen

What is the chemical formula for glucose (blood sugar)?

A) C6H12O6

B) CH4

C) CO2

D) NaCl

Answer: A) C6H12O6.