Free Practice Questions for RBSE Praveshika Science

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Exam pass rate: See RBSE subject-wise statistics for the current cycle on statistics2026.htm.

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Key Facts: RBSE Praveshika Science Exam

RBSE subject code for Science

RBSE Secondary/Praveshika 2026 subject-wise statistics

80 + 20

Typical Theory + Sessional full marks pattern (total 100)

RBSE Class 10 syllabus examination scheme

3 h 15 m

Typical theory paper duration

RBSE Class 10 syllabus

33%

Common minimum pass threshold under RBSE regulations

RBSE examination regulations (confirm circular)

2026

Main examination cycle evidenced in official subject-wise statistics

rajeduboard.rajasthan.gov.in/statistics2026.htm

MCQ study aid

Local bank adapts knowledge to four-option MCQs; official paper is mixed format

OpenExamPrep assessment-format policy

RBSE Praveshika Science (code 7): mixed board paper, typically Theory 80 + Sessional 20 = 100, 3h15m. Pass about 33% per RBSE rules. Fee as per board notification. Free English MCQ study aid — not a full mixed-paper simulation.

Sample RBSE Praveshika Science Practice Questions

Try these sample questions to review concepts for the RBSE Praveshika Science exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which observation best indicates that a chemical reaction has taken place when zinc is added to dilute sulphuric acid?

A.The zinc pieces simply change shape without gas.

B.Bubbles of a colourless gas form and the metal slowly disappears.

C.The solution freezes solid at room temperature.

D.Zinc becomes magnetic immediately.

Explanation: Zinc reacts with dilute H₂SO₄ to form zinc sulphate and hydrogen; effervescence and consumption of metal show a chemical change.

2The balanced equation for complete combustion of methane is CH₄ + 2O₂ → CO₂ + 2H₂O. How many moles of oxygen are needed for 3 moles of methane?

A.1.5 mol

B.3 mol

C.6 mol

D.2 mol

Explanation: The coefficient ratio CH₄ : O₂ is 1 : 2, so 3 mol CH₄ require 6 mol O₂.

3When silver chloride is exposed to sunlight, it turns grey. This reaction is an example of:

A.Combination reaction only

B.Photolytic decomposition

C.Double displacement without light

D.Neutralisation

Explanation: 2AgCl → 2Ag + Cl₂ in sunlight is decomposition driven by light (photolysis).

4In the reaction Fe₂O₃ + 2Al → Al₂O₃ + 2Fe, aluminium acts as:

A.An oxidising agent only

B.A reducing agent

C.A catalyst that is unchanged

D.A spectator ion

Explanation: Al removes oxygen from Fe₂O₃ (gains oxygen itself), so Al is oxidised and acts as the reducing agent (thermite-type redox).

5If 4 g of hydrogen completely reacts with 32 g of oxygen to form water, the mass of water formed is:

A.28 g

B.36 g

C.16 g

D.4 g

Explanation: By conservation of mass, 4 g H₂ + 32 g O₂ = 36 g H₂O when reaction is complete and no other products form.

6Which pair correctly matches a reaction type with an example?

A.Combination: CaCO₃ → CaO + CO₂

B.Displacement: Zn + CuSO₄ → ZnSO₄ + Cu

C.Decomposition: N₂ + 3H₂ → 2NH₃

D.Double displacement: 2Mg + O₂ → 2MgO

Explanation: Zn displaces Cu from CuSO₄; that is a classic single-displacement reaction.

7Which indicator turns pink in basic solution and remains colourless in acid?

A.Methyl orange

B.Phenolphthalein

C.Blue litmus

D.Turmeric paper in acid

Explanation: Phenolphthalein is colourless in acidic/neutral media and pink/magenta in basic solution.

8The pH of pure water at 25 °C is approximately:

A.0

B.7

C.14

D.1

Explanation: Pure water is neutral with [H⁺] = 10⁻⁷ mol L⁻¹, so pH = 7 at 25 °C.

9Baking soda used in cooking is chemically:

A.Na₂CO₃

B.NaHCO₃

C.NaOH

D.CaOCl₂

Explanation: Baking soda is sodium hydrogen carbonate, NaHCO₃.

10When dilute HCl is added to a blue solution of copper(II) carbonate suspension, a gas turns lime water milky. The gas is:

A.H₂

B.O₂

C.CO₂

D.Cl₂

Explanation: Carbonates react with acids to liberate CO₂, which turns lime water milky by forming CaCO₃.

About the RBSE Praveshika Science Exam

The Rajasthan RBSE Praveshika Science examination (subject code 7) is conducted by the Board of Secondary Education, Rajasthan (RBSE), Ajmer. Official 2026 subject-wise main-examination statistics list this paper among assessed subjects. Typical Class 10 schemes use Theory 80 + Sessional 20 = 100 marks and 3 hours 15 minutes. RBSE Praveshika Science (code 007) listed in 2026 Praveshika subject-wise statistics; concept scope mirrors Secondary Science at board Class 10 level. English MCQ study adaptation of Class 10-equivalent Science for Praveshika candidates. The official assessment is mixed written format, not pure multiple-choice. The 100 questions on this page are an English-language MCQ study adaptation for concept drills and self-assessment. Praveshika-stream Science concept practice with clear MCQ adaptation disclosure.

Exam sponsor: Board of Secondary Education, Rajasthan (RBSE). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Official RBSE mixed written theory paper (objective, short, and long constructed-response items as per subject design) with Theory 80 + Sessional/Internal 20 = 100 full marks, duration 3 hours 15 minutes. Local bank: English-language four-option MCQ study adaptation with explanations — not a full mixed-paper simulation or official-format substitute. Subject code 7. RBSE Praveshika Science (code 007) listed in 2026 Praveshika subject-wise statistics; concept scope mirrors Secondary Science at board Class 10 level.

Time Limit

3 hours 15 minutes (theory paper)

Passing Score

Minimum 33% marks in the subject as per RBSE Secondary/Praveshika examination regulations (confirm current session circulars)

Exam / Certification Fees

As per RBSE annual examination fee notification for school/private candidates (commonly published figures for the 2026 Secondary/Praveshika cycle have been about INR 600 regular / INR 650 private for the full board form — confirm the current circular on rajeduboard.rajasthan.gov.in; subject papers are not separately priced on this page)

Exam sponsor website

Reported exam pass rate: See RBSE subject-wise statistics for the current cycle on statistics2026.htm.. This describes exam candidates, not OpenExamPrep users or results from using our resources. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30%

Chemistry

Reactions, acids/bases, metals, carbon compounds.

35%

Biology

Life processes, control, reproduction, heredity, environment.

35%

Physics

Light, electricity, magnetic effects, energy.

Preparing for the RBSE Praveshika Science Exam

What You Need to Know

Passing score: Minimum 33% marks in the subject as per RBSE Secondary/Praveshika examination regulations (confirm current session circulars)
Assessment: Official RBSE mixed written theory paper (objective, short, and long constructed-response items as per subject design) with Theory 80 + Sessional/Internal 20 = 100 full marks, duration 3 hours 15 minutes. Local bank: English-language four-option MCQ study adaptation with explanations — not a full mixed-paper simulation or official-format substitute. Subject code 7. RBSE Praveshika Science (code 007) listed in 2026 Praveshika subject-wise statistics; concept scope mirrors Secondary Science at board Class 10 level.
Time limit: 3 hours 15 minutes (theory paper)
Exam / certification fees: As per RBSE annual examination fee notification for school/private candidates (commonly published figures for the 2026 Secondary/Praveshika cycle have been about INR 600 regular / INR 650 private for the full board form — confirm the current circular on rajeduboard.rajasthan.gov.in; subject papers are not separately priced on this page) Official sources

Using Our Practice Resources

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

RBSE Praveshika Science: Suggested Study Strategy

1Map every practice session to the official RBSE Science unit list, not only popular coaching lists.

2After MCQ drills, write full answers from RBSE-style model papers under 3h15m timing.

3Verify facts (dates, formulas, definitions) against NCERT/RBSE prescribed books before trusting any third-party summary.

4Track weak categories and re-attempt missed items after 48 hours.

5For languages and literature, revise prescribed textbook lessons and grammar separately.

Frequently Asked Questions

Is the official RBSE Praveshika Science exam multiple-choice only?

No. Official RBSE papers mix objective and constructed-response tasks. The 100 questions here are an English-language MCQ study adaptation for concept practice only.

What are full marks and duration for RBSE Science?

RBSE Class 10 / Praveshika subject schemes in the official syllabus commonly use Theory 80 + Sessional 20 = 100 marks with a 3 hour 15 minute theory paper. Confirm the exact scheme for code 7 in the current RBSE syllabus PDF on rajeduboard.rajasthan.gov.in.

What is the passing score?

Minimum 33% marks in the subject as per RBSE Secondary/Praveshika examination regulations (confirm current session circulars).

How much does the exam cost?

Where are official statistics and syllabus?

Subject-wise 2026 result statistics and board materials are published by RBSE at https://rajeduboard.rajasthan.gov.in/statistics2026.htm and syllabus PDFs under anudeshika / books sections of https://rajeduboard.rajasthan.gov.in. Prefer primary board PDFs over third-party summaries.

Is this bank an official RBSE translation?

No. OpenExamPrep publishes one English-language practice bank per exam ID. Target-language terms and texts may appear when they are integral to the skill, but stems, explanations, and SEO copy are English study adaptations — not official translations or language-environment simulations.

How should I use MCQs for a mixed written/practical paper?

Use MCQs for daily concept drills and self-check. Also practise full written answers from RBSE model papers under timed conditions.