OSSC PEO GK Question Mock Test 2026: 20 MCQs with Answers part-2

Welcome to OSSC PEO GK Question Mock Test 2026 – Part 2. This practice set contains 30 important General Knowledge questions with answers and explanations for candidates preparing for the OSSC PEO examination and other Odisha government competitive exams.

The questions cover important areas such as Indian History, Indian Polity, Geography, General Science, Environment, Important Institutions and General Awareness.

OSSC PEO GK Mock Test with Answers

This OSSC PEO GK Mock Test is designed for candidates who want to practice important GK questions in a simple and exam-oriented format.

In this set, you will find questions related to:

Indian Freedom Movement
Indian Constitution
Indian Geography
Rivers and Waterfalls
General Science
Chemistry
Human Biology
Environmental Conventions
Important Organisations and Headquarters
Important Historical Personalities

OSSC PEO GK Questions

The set includes important questions such as the person known as the Frontier Gandhi, the highest peak of the Aravalli Range, the headquarters of Coal India Limited, heavy water, the Kigali Amendment, the Simla Agreement, the Maurya Empire, and important constitutional Articles.

These questions are useful for OSSC PEO GK preparation as well as other Odisha competitive examinations.

OSSC PEO GK Question PDF

Candidates searching for an OSSC PEO GK Question PDF can use this online question set for revision. The questions include answers and explanations, making them useful for quick study before an examination.

You can also save the page for later revision and practice the questions again to improve your accuracy.

OSSC PEO GK Mock Test Free 2026

This OSSC PEO GK Mock Test Free 2026 is useful for candidates preparing for PEO and other government examinations. Regularly solving GK MCQs can help you improve your knowledge of important facts and identify areas that require more revision.

Exams Where These Questions Can Help

OSSC PEO
OSSSC examinations
OPSC examinations
Odisha Police examinations
RI
AMIN
Junior Assistant
Forest Guard
Other Odisha Government Competitive Exams

1. Who was known as the ‘Frontier Gandhi’?

Muhammad Ali Jinnah

Maulana Azad

Khan Abdul Ghaffar Khan

Lala Lajpat Rai

Khan Abdul Ghaffar Khan was popularly known as the ‘Frontier Gandhi’ because of his non-violent struggle for India’s freedom. Odia Explanation: ଖାନ୍ ଅବଦୁଲ୍ ଗଫଫାର୍ ଖାନ୍ ଅହିଂସା ମାଧ୍ୟମରେ ସ୍ୱାଧୀନତା ସଂଗ୍ରାମରେ ଅବଦାନ ପାଇଁ ‘ସୀମାନ୍ତ ଗାନ୍ଧୀ’ ଭାବେ ପରିଚିତ ଥିଲେ।

2. Guru Shikhar is the highest peak of which mountain range?

Vindhya Range

Western Ghats

Aravalli Range

Satpura Range

Guru Shikhar is the highest peak of the Aravalli Range in Rajasthan. Odia Explanation: ଗୁରୁ ଶିଖର ରାଜସ୍ଥାନର ଆରାବଲୀ ପର୍ବତମାଳାର ସର୍ବୋଚ୍ଚ ଶୃଙ୍ଗ ଅଟେ।

3. Where is the headquarters of Coal India Limited located?

Mumbai

Kolkata

Nagpur

Ahmedabad

The headquarters of Coal India Limited is located in Kolkata, West Bengal. Odia Explanation: କୋଲ୍ ଇଣ୍ଡିଆ ଲିମିଟେଡ୍‌ର ମୁଖ୍ୟାଳୟ ପଶ୍ଚିମବଙ୍ଗର କୋଲକାତାରେ ଅବସ୍ଥିତ।

4. What is heavy water?

H2SO4

D2O

H2O2

H2S

Heavy water is deuterium oxide, represented by the chemical formula D2O. Odia Explanation: ଭାରୀ ଜଳକୁ ଡ୍ୟୁଟେରିୟମ୍ ଅକ୍ସାଇଡ୍ କୁହାଯାଏ ଏବଂ ଏହାର ରାସାୟନିକ ସୂତ୍ର D2O।

5. Where is the headquarters of the National Institute of Oceanography located?

Lucknow

Goa

Hyderabad

Bhopal

The headquarters of the National Institute of Oceanography is located at Dona Paula, Goa. Odia Explanation: ଜାତୀୟ ସମୁଦ୍ର ବିଜ୍ଞାନ ପ୍ରତିଷ୍ଠାନର ମୁଖ୍ୟାଳୟ ଗୋଆର ଡୋନା ପାଉଲାଠାରେ ଅବସ୍ଥିତ।

6. Which organ produces bile?

Stomach

Gall bladder

Pancreas

Liver

The liver produces bile, which helps in the digestion of fats. Odia Explanation: ଯକୃତ ପିତ୍ତରସ ଉତ୍ପାଦନ କରେ, ଯାହା ଚର୍ବି ହଜମରେ ସାହାଯ୍ୟ କରେ।

7. What is the chemical name of quicklime?

Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium sulphate

Quicklime is calcium oxide (CaO). Odia Explanation: କୁଇକ୍‌ଲାଇମ୍ ହେଉଛି କ୍ୟାଲସିୟମ୍ ଅକ୍ସାଇଡ୍ (CaO)।

8. Which acid is present in curd?

Citric acid

Formic acid

Lactic acid

Tartaric acid

Lactic acid is produced during the fermentation of milk and is present in curd. Odia Explanation: କ୍ଷୀରର ଫର୍ମେଣ୍ଟେସନ୍ ସମୟରେ ଲାକ୍ଟିକ୍ ଏସିଡ୍ ଉତ୍ପନ୍ନ ହୁଏ ଏବଂ ଏହା ଦହିରେ ଥାଏ।

9. The Kigali Amendment to the Montreal Protocol aims to phase down which substances?

Sulphur dioxide

Carbon monoxide

Hydrofluorocarbons (HFCs)

Methane

The Kigali Amendment aims to phase down the production and consumption of hydrofluorocarbons (HFCs). Odia Explanation: କିଗାଲି ସଂଶୋଧନ ହାଇଡ୍ରୋଫ୍ଲୋରୋକାର୍ବନ୍ (HFCs)ର ଉତ୍ପାଦନ ଓ ବ୍ୟବହାର କମାଇବାକୁ ଲକ୍ଷ୍ୟ ରଖିଛି।

10. Dhuandhar Falls near Jabalpur is located on which river?

Son

Tapti

Narmada

Chambal

Dhuandhar Falls is formed by the Narmada River near Jabalpur in Madhya Pradesh. Odia Explanation: ମଧ୍ୟପ୍ରଦେଶର ଜବଲପୁର ନିକଟରେ ନର୍ମଦା ନଦୀ ଉପରେ ଧୁଆଁଧାର ଜଳପ୍ରପାତ ଗଠିତ ହୋଇଛି।

11. The Simla Agreement (1972) was signed between India and which country?

Nepal

Pakistan

China

Bangladesh

The Simla Agreement was signed between India and Pakistan in 1972. Odia Explanation: ୧୯୭୨ ମସିହାରେ ଭାରତ ଏବଂ ପାକିସ୍ତାନ ମଧ୍ୟରେ ସିମ୍ଲା ଚୁକ୍ତି ସ୍ୱାକ୍ଷରିତ ହୋଇଥିଲା।

12. What is the highest peak of the Nilgiri Hills?

Mahendragiri

Guru Shikhar

Doddabetta

Anamudi

Doddabetta is the highest peak of the Nilgiri Hills in Tamil Nadu. Odia Explanation: ଡୋଡାବେଟ୍ଟା ତାମିଲନାଡୁର ନୀଳଗିରି ପାହାଡ଼ର ସର୍ବୋଚ୍ଚ ଶୃଙ୍ଗ ଅଟେ।

13. When an acid reacts with a metal carbonate, which gas is released?

Carbon dioxide

Hydrogen

Chlorine

Oxygen

An acid reacts with a metal carbonate to produce carbon dioxide, salt and water. Odia Explanation: ଅମ୍ଳ ଧାତୁ କାର୍ବୋନେଟ୍ ସହିତ ପ୍ରତିକ୍ରିୟା କଲେ କାର୍ବନ ଡାଇଅକ୍ସାଇଡ୍, ଲବଣ ଏବଂ ଜଳ ଉତ୍ପନ୍ନ ହୁଏ।

14. Who founded the Maurya Empire?

Chandragupta Maurya

Bimbisara

Ashoka

Bindusara

Chandragupta Maurya founded the Maurya Empire around 322 BCE. Odia Explanation: ଚନ୍ଦ୍ରଗୁପ୍ତ ମୌର୍ଯ୍ୟ ପ୍ରାୟ ୩୨୨ ଖ୍ରୀଷ୍ଟପୂର୍ବରେ ମୌର୍ଯ୍ୟ ସାମ୍ରାଜ୍ୟ ପ୍ରତିଷ୍ଠା କରିଥିଲେ।

15. Vantawng Falls is located in which state?

Mizoram

Nagaland

Tripura

Manipur

Vantawng Falls is located in Mizoram. Odia Explanation: ଭାଣ୍ଟାୱାଙ୍ଗ ଜଳପ୍ରପାତ ମିଜୋରାମରେ ଅବସ୍ଥିତ।

16. What is the atomic number of carbon?

Carbon has an atomic number of 6, meaning it has six protons in its nucleus. Odia Explanation: କାର୍ବନର ପରମାଣୁ କ୍ରମାଙ୍କ ୬, ଅର୍ଥାତ୍ ଏହାର ନ୍ୟୁକ୍ଲିଅସ୍‌ରେ ୬ଟି ପ୍ରୋଟନ୍ ଥାଏ।

17. Who founded the Arya Samaj?

Raja Ram Mohan Roy

Swami Vivekananda

Jyotiba Phule

Swami Dayanand Saraswati

Swami Dayanand Saraswati founded the Arya Samaj in 1875. Odia Explanation: ସ୍ୱାମୀ ଦୟାନନ୍ଦ ସରସ୍ୱତୀ ୧୮୭୫ ମସିହାରେ ଆର୍ଯ୍ୟ ସମାଜ ପ୍ରତିଷ୍ଠା କରିଥିଲେ।

18. What is the pH of pure water at 25°C?

Pure water has a pH of 7 at 25°C, which is considered neutral. Odia Explanation: ୨୫°C ତାପମାତ୍ରାରେ ଶୁଦ୍ଧ ଜଳର pH ମୂଲ୍ୟ ୭, ଯାହାକୁ ନିରପେକ୍ଷ ବୋଲି କୁହାଯାଏ।

19. Under which Article is a National Emergency declared in India?

Article 352

Article 356

Article 370

Article 360

Article 352 of the Indian Constitution deals with the proclamation of a National Emergency. Odia Explanation: ଭାରତୀୟ ସମ୍ବିଧାନର ଧାରା ୩୫୨ ଜାତୀୟ ଜରୁରୀକାଳୀନ ପରିସ୍ଥିତି ଘୋଷଣା ସହିତ ସମ୍ପର୍କିତ।

20. Where is the headquarters of the Central Drug Research Institute located?

Lucknow

Bengaluru

Kolkata

Chennai

The CSIR-Central Drug Research Institute is located in Lucknow, Uttar Pradesh. Odia Explanation: CSIR-କେନ୍ଦ୍ରୀୟ ଔଷଧ ଗବେଷଣା ପ୍ରତିଷ୍ଠାନ ଉତ୍ତରପ୍ରଦେଶର ଲକ୍ଷ୍ନୌରେ ଅବସ୍ଥିତ।

21. Which acid is known as the ‘King of Chemicals’?

Sulphuric acid

Acetic acid

Nitric acid

Hydrochloric acid

Sulphuric acid is commonly known as the ‘King of Chemicals’ because of its extensive industrial use. Odia Explanation: ସଲଫ୍ୟୁରିକ୍ ଏସିଡ୍‌ର ବ୍ୟାପକ ଶିଳ୍ପ ବ୍ୟବହାର ହେତୁ ଏହାକୁ ସାଧାରଣତଃ ‘ରସାୟନର ରାଜା’ କୁହାଯାଏ।

22. Dassam Falls is located in which state?

Odisha

West Bengal

Bihar

Jharkhand

Dassam Falls is located in Jharkhand. Odia Explanation: ଦଶମ ଜଳପ୍ରପାତ ଝାଡ଼ଖଣ୍ଡରେ ଅବସ୍ଥିତ।

23. Jog Falls is located in which state?

Karnataka

Tamil Nadu

Kerala

Goa

Jog Falls is located in Karnataka. Odia Explanation: ଜୋଗ ଜଳପ୍ରପାତ କର୍ଣ୍ଣାଟକରେ ଅବସ୍ଥିତ।

24. Under which Article is the Attorney General of India appointed?

Article 76

Article 148

Article 124

Article 165

Article 76 of the Indian Constitution provides for the office of the Attorney General of India. Odia Explanation: ଭାରତୀୟ ସମ୍ବିଧାନର ଧାରା ୭୬ ଭାରତର ଆଟର୍ଣ୍ଣି ଜେନେରାଲ୍ ପଦବୀ ସମ୍ପର୍କରେ ବ୍ୟବସ୍ଥା କରେ।

25. Which waterfall is located near Cherrapunji (Sohra)?

Nohkalikai Falls

Jog Falls

Hundru Falls

Dudhsagar Falls

Nohkalikai Falls is located near Cherrapunji, now known as Sohra, in Meghalaya. Odia Explanation: ନୋହକାଲିକାଇ ଜଳପ୍ରପାତ ମେଘାଳୟର ଚେରାପୁଞ୍ଜି, ବର୍ତ୍ତମାନ ସୋହରା ନାମରେ ପରିଚିତ, ନିକଟରେ ଅବସ୍ଥିତ।

26. What is the chemical symbol of gold?

Au is the chemical symbol for gold, derived from the Latin word ‘aurum’. Odia Explanation: Au ସୁନାର ରାସାୟନିକ ସଙ୍କେତ ଅଟେ। ଏହା ଲାଟିନ୍ ଶବ୍ଦ ‘aurum’ରୁ ଆସିଛି।

27. Where is the headquarters of Bhabha Atomic Research Centre (BARC) located?

Mumbai

Kolkata

New Delhi

Patna

BARC is located at Trombay, Mumbai, Maharashtra. Odia Explanation: BARC ମହାରାଷ୍ଟ୍ରର ମୁମ୍ବାଇର ଟ୍ରମ୍ବେଠାରେ ଅବସ୍ଥିତ।

28. Where is the headquarters of DRDO located?

Kolkata

Ahmedabad

Dehradun

New Delhi

The headquarters of the Defence Research and Development Organisation (DRDO) is located in New Delhi. Odia Explanation: ପ୍ରତିରକ୍ଷା ଗବେଷଣା ଓ ବିକାଶ ସଂଗଠନ (DRDO)ର ମୁଖ୍ୟାଳୟ ନୂଆଦିଲ୍ଲୀରେ ଅବସ୍ଥିତ।

29. Jog Falls is situated on which river?

Kaveri

Sharavathi

Krishna

Godavari

Jog Falls is formed by the Sharavathi River in Karnataka. Odia Explanation: କର୍ଣ୍ଣାଟକର ଶରାବତୀ ନଦୀ ଦ୍ୱାରା ଜୋଗ ଜଳପ୍ରପାତ ଗଠିତ ହୋଇଛି।

30. The Stockholm Convention deals with which substances?

Wetlands

Desertification

Ozone layer

Persistent Organic Pollutants (POPs)

The Stockholm Convention is an international treaty aimed at eliminating or reducing persistent organic pollutants (POPs). Odia Explanation: ଷ୍ଟକହୋମ୍ କନଭେନସନ୍ ସ୍ଥାୟୀ ଜୈବ ପ୍ରଦୂଷକ (POPs)କୁ ହ୍ରାସ କିମ୍ବା ଦୂର କରିବା ଉଦ୍ଦେଶ୍ୟରେ ଏକ ଆନ୍ତର୍ଜାତୀୟ ଚୁକ୍ତି।

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Conclusion

This OSSC PEO GK Question Mock Test 2026 provides 30 important MCQs with answers and explanations for effective General Knowledge practice. Continue solving mock tests regularly and revise important facts to strengthen your preparation for the OSSC PEO examination.

Practice more OSSC PEO GK questions, mock tests and competitive-exam materials on MockTestOdisha.