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Navy Agniveer SSR Chemistry Questions
Practise chemistry (science) for the Indian Navy Agniveer (SSR) Examination: 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
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Q1.Water has a maximum density at about:
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Answer: A — 4 °C
Water is densest at about 4 °C.
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Q2.What is the mass of 1.5 mol of methane (CH₄)? (Molar mass 16 g/mol)
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Answer: A — 24 g
Mass = moles × molar mass = 1.5 × 16 g/mol = 24 g.
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Q3.The hardest naturally occurring substance is:
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Answer: A — Diamond
Diamond, a carbon allotrope, is the hardest natural material.
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Q4.20 g of NaCl (molar mass 58.5) is dissolved to make 2000 mL of solution. Find the molarity.
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Answer: B — 0.171 M
Moles = 20/58.5 = 0.342; molarity = moles ÷ litres = 0.342 ÷ 2 = 0.171 M.
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Q5.Which of these is an alkali metal?
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Answer: C — Potassium
Potassium is in Group 1 (alkali metals).
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Q6.What is the mass of 1.5 mol of water (H₂O)? (Molar mass 18 g/mol)
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Answer: A — 27 g
Mass = moles × molar mass = 1.5 × 18 g/mol = 27 g.
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Q7.A solution with pH 3 is:
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Answer: D — Acidic
pH below 7 is acidic.
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Q8.10 g of NaCl (molar mass 58.5) is dissolved to make 1000 mL of solution. Find the molarity.
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Answer: B — 0.171 M
Moles = 10/58.5 = 0.171; molarity = moles ÷ litres = 0.171 ÷ 1 = 0.171 M.
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Q9.The process of converting a solid directly into a gas is called:
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Answer: C — Sublimation
Sublimation, e.g. dry ice or naphthalene.
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Q10.What is the pH of a solution with [H⁺] = 10⁻⁵ mol/L?
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Answer: B — 5
pH = −log[H⁺] = −log(10⁻⁵) = 5.
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 Navy Agniveer SSR
Indian Navy Agniveer (SSR) Examination — conducted by Indian Navy. Selects Agniveers (Senior Secondary Recruits) for the Indian Navy.
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.
Navy Agniveer SSR practice topics
| Topic | Section | Question source |
|---|---|---|
| Algebra | Mathematics | Calculated (new numbers every set) |
| Physics | Science | Calculated + question bank |
| Chemistry | Science | Calculated + question bank |
| English Grammar | English | Question bank |