- No data uploaded
- Instant results
NEET UG Chemistry Questions
Practise chemistry (science) for the National Eligibility cum Entrance Test (UG): 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Chemistry practice
-
Q1.Which gas is responsible for most of the greenhouse effect from human activity?
Show answer & explanation
Answer: D — Carbon dioxide
CO₂ from burning fossil fuels is the largest human-caused contributor.
-
Q2.What is the pH of a solution with [H⁺] = 10⁻⁶ mol/L?
Show answer & explanation
Answer: C — 6
pH = −log[H⁺] = −log(10⁻⁶) = 6.
-
Q3.Which bond is formed by the sharing of electrons?
Show answer & explanation
Answer: C — Covalent
Covalent bonds share electron pairs.
-
Q4.90 g of glucose (molar mass 180) is dissolved to make 2000 mL of solution. Find the molarity.
Show answer & explanation
Answer: D — 0.25 M
Moles = 90/180 = 0.5; molarity = moles ÷ litres = 0.5 ÷ 2 = 0.25 M.
-
Q5.An oxidation reaction involves:
Show answer & explanation
Answer: B — Loss of electrons
Oxidation is loss of electrons (OIL RIG).
-
Q6.What is the mass of 2.5 mol of water (H₂O)? (Molar mass 18 g/mol)
Show answer & explanation
Answer: D — 45 g
Mass = moles × molar mass = 2.5 × 18 g/mol = 45 g.
-
Q7.Rusting of iron requires:
Show answer & explanation
Answer: D — Both oxygen and water
Iron rusts in the presence of oxygen and moisture, forming hydrated iron(III) oxide.
-
Q8.Which gas is produced when zinc reacts with dilute hydrochloric acid?
Show answer & explanation
Answer: B — Hydrogen
Zn + 2HCl → ZnCl₂ + H₂.
-
Q9.What is the mass of 0.5 mol of glucose (C₆H₁₂O₆)? (Molar mass 180 g/mol)
Show answer & explanation
Answer: C — 90 g
Mass = moles × molar mass = 0.5 × 180 g/mol = 90 g.
-
Q10.Water has a maximum density at about:
Show answer & explanation
Answer: D — 4 °C
Water is densest at about 4 °C.
How to approach chemistry questions
Moles = mass ÷ molar mass; molarity = moles ÷ litres. pH = −log[H⁺] and pH + pOH = 14 at 25 °C. For concepts, link each property to its position in the periodic table.
About NEET UG
National Eligibility cum Entrance Test (UG) — conducted by National Testing Agency (NTA). The single entrance test for MBBS, BDS, AYUSH and nursing admissions across India.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
NEET UG practice topics
| Topic | Section | Question source |
|---|---|---|
| Biology | Science | Question bank |
| Chemistry | Science | Calculated + question bank |
| Physics | Science | Calculated + question bank |