Odisha LTR Teacher Recruitment — Mock Test 02
High-Yield Preliminary Mock covering Odisha GK, Geography, Polity, Arithmetic, Reasoning, Computer Literacy & General Science.
OSSC LTR Teacher Recruitment — Mock Test 02
50 High-Yield Practice MCQs | Odisha GK, Polity, Arithmetic, Reasoning, Computer & Science
Tap "Show Answer & Explanation" under each question to verify your answers.
1. Who was the founder of the famous Satyabadi Vana Vidyalaya at Sakshigopal in Puri district?
- A) Madhusudan Das
- B) Gopabandhu Das
- C) Godabarish Mishra
- D) Nilakantha Das
Show Answer & Explanation
Correct Answer: B) Gopabandhu Das
Explanation: Utkalamani Pandit Gopabandhu Das established the open-air residential school Satyabadi Vana Vidyalaya in 1909 to promote patriotic values and character building.
2. Which Article of the Indian Constitution empowers the President to declare a Financial Emergency?
- A) Article 352
- B) Article 356
- C) Article 360
- D) Article 365
Show Answer & Explanation
Correct Answer: C) Article 360
Explanation: Article 360 empowers the President to proclaim a Financial Emergency if the financial stability or credit of India is threatened.
3. The famous Budharaja and Gandhi Hill landmarks are situated in which city of Odisha?
- A) Sambalpur
- B) Cuttack
- C) Rourkela
- D) Berhampur
Show Answer & Explanation
Correct Answer: A) Sambalpur
Explanation: Budharaja Hill, famed for its ancient Shiva temple, and Gandhi Hill are prominent landmarks situated in Sambalpur.
4. What is the standard clock speed measurement unit for modern microprocessors?
- A) Megabytes (MB)
- B) Gigahertz (GHz)
- C) Kilobits per second (Kbps)
- D) Terabytes (TB)
Show Answer & Explanation
Correct Answer: B) Gigahertz (GHz)
Explanation: Processor clock speeds are measured in Gigahertz (GHz), representing billions of clock cycles per second.
5. If the selling price of 20 articles is equal to the cost price of 25 articles, what is the profit percentage?
- A) 20%
- B) 25%
- C) 30%
- D) 15%
Show Answer & Explanation
Correct Answer: B) 25%
Explanation: Profit % = [(25 - 20) / 20] × 100 = (5 / 20) × 100 = 25%.
6. Find the missing number in the sequence: 4, 9, 25, 49, 121, ?
- A) 144
- B) 169
- C) 196
- D) 225
Show Answer & Explanation
Correct Answer: B) 169
Explanation: The series represents squares of consecutive prime numbers: 2²=4, 3²=9, 5²=25, 7²=49, 11²=121, 13²=169.
7. Which tributary is the largest left-bank tributary of the Mahanadi River system in Odisha?
- A) Tel River
- B) Ib River
- C) Ong River
- D) Jonk River
Show Answer & Explanation
Correct Answer: B) Ib River
Explanation: Ib River and Mand River are left-bank tributaries, while Tel, Ong, and Jonk are right-bank tributaries of the Mahanadi.
8. Which gas is primarily used in commercial fire extinguishers to suppress electrical fires?
- A) Oxygen
- B) Hydrogen
- C) Carbon dioxide (CO₂)
- D) Nitrogen dioxide
Show Answer & Explanation
Correct Answer: C) Carbon dioxide (CO₂)
Explanation: CO₂ displaces oxygen, suffocates the flames, and does not conduct electricity, making it ideal for electrical fires.
9. Which shortcut key is standardly used in Microsoft Word to center-align the selected paragraph?
- A) Ctrl + C
- B) Ctrl + J
- C) Ctrl + E
- D) Ctrl + R
Show Answer & Explanation
Correct Answer: C) Ctrl + E
Explanation: Ctrl + E centers text. (Ctrl + L is left, Ctrl + R is right, and Ctrl + J is justify).
10. A train 180 m long is moving at 72 km/h. How many seconds will it take to cross a platform 220 m long?
- A) 15 seconds
- B) 20 seconds
- C) 25 seconds
- D) 18 seconds
Show Answer & Explanation
Correct Answer: B) 20 seconds
Explanation: Total distance = 180 + 220 = 400 m. Speed = 72 × (5/18) = 20 m/s. Time = 400 / 20 = 20 seconds.
11. Who was the tribal leader from Koraput who led the tribal resistance during the Quit India Movement in 1942?
- A) Birsa Munda
- B) Laxman Nayak
- C) Baji Rout
- D) Chakra Bisoi
Show Answer & Explanation
Correct Answer: B) Laxman Nayak
Explanation: Tribal leader Laxman Nayak mobilized the movement in the Koraput region and was executed by hanging in Berhampur jail on 29 March 1943.
12. Point P is 10 m South of Point Q. Point R is 10 m East of Point P. In which direction is Point Q with respect to Point R?
- A) North-West
- B) North-East
- C) South-West
- D) South-East
Show Answer & Explanation
Correct Answer: A) North-West
Explanation: From Point R, moving to P is West, and moving from P to Q is North. Therefore, Q is North-West of R.
13. Which organelle in plant cells is directly responsible for carrying out photosynthesis?
- A) Mitochondria
- B) Chloroplast
- C) Golgi apparatus
- D) Ribosome
Show Answer & Explanation
Correct Answer: B) Chloroplast
Explanation: Chloroplasts contain chlorophyll pigments that capture light energy to convert carbon dioxide and water into glucose.
14. The Balimela Hydroelectric Power Project in Odisha is built on which river basin?
- A) Sileru River
- B) Nagavali River
- C) Vamsadhara River
- D) Baitarani River
Show Answer & Explanation
Correct Answer: A) Sileru River
Explanation: The Balimela reservoir and powerhouse are situated on the Sileru river in the Malkangiri district.
15. What is the simple interest earned on ₹6,400 at 7.5% per annum for 3 years?
- A) ₹1,200
- B) ₹1,440
- C) ₹1,500
- D) ₹1,600
Show Answer & Explanation
Correct Answer: B) ₹1,440
Explanation: SI = (P × R × T) / 100 = (6400 × 7.5 × 3) / 100 = 64 × 22.5 = ₹1,440.
16. Which dynastic king founded the historic Suryavamshi Gajapati Empire of Odisha in 1435 CE?
- A) Kapilendra Deva
- B) Purushottama Deva
- C) Prataparudra Deva
- D) Langula Narasimha
Show Answer & Explanation
Correct Answer: A) Kapilendra Deva
Explanation: Kapilendra Deva established the Gajapati Empire in 1435 CE, expanding the empire from the Ganges to the Kaveri.
17. The 74th Constitutional Amendment Act, 1992 added which Schedule to the Constitution of India?
- A) Tenth Schedule
- B) Eleventh Schedule
- C) Twelfth Schedule
- D) Ninth Schedule
Show Answer & Explanation
Correct Answer: C) Twelfth Schedule
Explanation: The 74th Amendment added Part IX-A and the Twelfth Schedule specifying 18 municipal functional items.
18. Which bird sanctuary in Odisha is located inside Chilika Lake and hosts migratory birds during winter?
- A) Nalbana Bird Sanctuary
- B) Chandaka Sanctuary
- C) Kuldiha Sanctuary
- D) Hadgarh Sanctuary
Show Answer & Explanation
Correct Answer: A) Nalbana Bird Sanctuary
Explanation: Nalbana Island within Chilika Lake was officially notified as a bird sanctuary in 1987.
19. Who authored the famous satirical Odia short story 'Rebati' (1898)?
- A) Gopinath Mohanty
- B) Fakir Mohan Senapati
- C) Surendra Mohanty
- D) Manoj Das
Show Answer & Explanation
Correct Answer: B) Fakir Mohan Senapati
Explanation: Vyasakabi Fakir Mohan Senapati wrote 'Rebati', widely considered the first modern Odia short story.
20. The concept of 'Judicial Review' in the Indian Constitution was adopted from which country?
- A) United Kingdom
- B) United States
- C) Ireland
- D) France
Show Answer & Explanation
Correct Answer: B) United States
Explanation: The power of the judiciary to review legislative and executive actions was borrowed from the United States constitutional system.
21. Which district of Odisha is the largest producer of Manganese ore?
- A) Keonjhar
- B) Sundargarh
- C) Jajpur
- D) Mayurbhanj
Show Answer & Explanation
Correct Answer: A) Keonjhar
Explanation: Keonjhar (Kendujhar) district, particularly the Barbil-Joda belt, contains India's premier high-grade manganese reserves.
22. What is the full form of 'PDF' in electronic document exchange?
- A) Portable Document Format
- B) Permanent Data File
- C) Personal Document File
- D) Process Document Format
Show Answer & Explanation
Correct Answer: A) Portable Document Format
Explanation: PDF stands for Portable Document Format, an open ISO file format originally created by Adobe.
23. The average of 5 consecutive odd numbers is 27. What is the value of the smallest number?
- A) 21
- B) 23
- C) 25
- D) 27
Show Answer & Explanation
Correct Answer: B) 23
Explanation: In an arithmetic progression of odd numbers, the median is the average: 23, 25, 27, 29, 31. The smallest number is 23.
24. In a certain code, 'ORANGE' is written as 'PQBOhf'. How will 'GRAPES' be coded under the same pattern?
- A) HSBQFT
- B) HSBqft
- C) HTCQFT
- D) ISBQFT
Show Answer & Explanation
Correct Answer: A) HSBQFT
Explanation: Each letter shifts forward by +1: G(+1)→H, R(+1)→S, A(+1)→B, P(+1)→Q, E(+1)→F, S(+1)→T.
25. Which mineral is predominantly extracted from the Damanjodi region of Odisha?
- A) Chromite
- B) Bauxite
- C) Coal
- D) Iron Ore
Show Answer & Explanation
Correct Answer: B) Bauxite
Explanation: Damanjodi in Koraput district is home to NALCO's alumina refinery, supplied directly from the Panchpatmali bauxite mines.
26. Which enzyme present in human saliva begins the chemical breakdown of dietary starches?
- A) Pepsin
- B) Salivary Amylase (Ptyalin)
- C) Trypsin
- D) Lipase
Show Answer & Explanation
Correct Answer: B) Salivary Amylase (Ptyalin)
Explanation: Salivary amylase breaks down complex starches into maltose and smaller dextrins in the mouth.
27. Which protocol is responsible for resolving an IP address into a physical MAC hardware address?
- A) DNS
- B) ARP (Address Resolution Protocol)
- C) DHCP
- D) FTP
Show Answer & Explanation
Correct Answer: B) ARP (Address Resolution Protocol)
Explanation: ARP maps logical Layer 3 IP addresses to physical Layer 2 MAC addresses on local area networks.
28. If A and B can complete a job in 15 days and 10 days respectively, in how many days can they complete it together?
- A) 5 days
- B) 6 days
- C) 7.5 days
- D) 8 days
Show Answer & Explanation
Correct Answer: B) 6 days
Explanation: 1/15 + 1/10 = (2 + 3)/30 = 5/30 = 1/6. Total time required = 6 days.
29. Who led the Keonjhar Bhuyan tribal rebellion of 1868 in Odisha?
- A) Dharani Dhar Naik
- B) Ratna Naik
- C) Chakra Bisoi
- D) Rindo Majhi
Show Answer & Explanation
Correct Answer: B) Ratna Naik
Explanation: Ratna Naik led the 1868 Bhuyan revolt. (Dharanidhar Naik led the second phase in 1891).
30. Which Article of the Constitution provides for an independent Election Commission of India?
- A) Article 320
- B) Article 324
- C) Article 326
- D) Article 330
Show Answer & Explanation
Correct Answer: B) Article 324
Explanation: Article 324 vests the superintendence, direction, and control of all elections to Parliament and State Legislatures in the Election Commission.
31. What is the compounded ratio of 2:3, 6:7, and 14:15?
- A) 4:15
- B) 8:15
- C) 7:15
- D) 2:5
Show Answer & Explanation
Correct Answer: B) 8:15
Explanation: (2 × 6 × 14) / (3 × 7 × 15) = 168 / 315 = 8 / 15.
32. Pointing to a boy in the park, Prakash says, "He is the son of the only son of my grandfather." How is Prakash related to the boy?
- A) Brother or Prakash himself
- B) Uncle
- C) Father
- D) Cousin
Show Answer & Explanation
Correct Answer: A) Brother or Prakash himself
Explanation: The grandfather's only son is Prakash's father. The son of his father must be Prakash or Prakash's brother.
33. Which layer of the atmosphere contains the protective ozone layer that absorbs solar UV radiation?
- A) Troposphere
- B) Stratosphere
- C) Mesosphere
- D) Thermosphere
Show Answer & Explanation
Correct Answer: B) Stratosphere
Explanation: The ozone layer resides within the stratosphere between approximately 15 and 35 km above Earth's surface.
34. In MS Excel, what does pressing the shortcut key combination Ctrl + ; (semicolon) insert into the active cell?
- A) Current Time
- B) Current Date
- C) Currency symbol
- D) Cell comment
Show Answer & Explanation
Correct Answer: B) Current Date
Explanation: Ctrl + ; inserts the current static system date; Ctrl + Shift + ; inserts the current time.
35. The difference between two numbers is 1365. On dividing the larger number by the smaller, the quotient is 6 and the remainder is 15. What is the smaller number?
- A) 240
- B) 270
- C) 290
- D) 310
Show Answer & Explanation
Correct Answer: B) 270
Explanation: Let numbers be x and y. x - y = 1365 and x = 6y + 15. (6y + 15) - y = 1365 ⇒ 5y = 1350 ⇒ y = 270.
36. Who was the celebrated poet who authored the vernacular Odia Mahabharata during the 15th century?
- A) Balarama Das
- B) Sarala Das
- C) Jagannatha Das
- D) Achyutananda Das
Show Answer & Explanation
Correct Answer: B) Sarala Das
Explanation: Sudramuni Sarala Das composed the classical Odia Mahabharata during the reign of Gajapati Kapilendra Deva.
37. Which Constitutional Amendment lowered the voting age of Indian citizens from 21 years to 18 years?
- A) 42nd Amendment
- B) 44th Amendment
- C) 61st Amendment
- D) 73rd Amendment
Show Answer & Explanation
Correct Answer: C) 61st Amendment
Explanation: The 61st Constitutional Amendment Act, 1988 amended Article 326 to reduce the voting age to 18 years.
38. What is the primary constituent of natural gas and Compressed Natural Gas (CNG)?
- A) Ethane
- B) Propane
- C) Methane (CH₄)
- D) Butane
Show Answer & Explanation
Correct Answer: C) Methane (CH₄)
Explanation: Methane accounts for 80% to 95% of natural gas and CNG fuels.
39. Which key combination allows a user to cycle through and switch between active open application windows?
- A) Ctrl + Tab
- B) Alt + Tab
- C) Shift + Tab
- D) Win + Tab
Show Answer & Explanation
Correct Answer: B) Alt + Tab
Explanation: Alt + Tab displays the task switcher and jumps between running application windows.
40. A sum invested at compound interest doubles itself in 4 years. In how many years will it become 8 times its original amount?
- A) 8 years
- B) 12 years
- C) 16 years
- D) 10 years
Show Answer & Explanation
Correct Answer: B) 12 years
Explanation: If it doubles in 4 years, it will become 8 (2³) times in 4 × 3 = 12 years.
41. Select the odd pair out among the following:
- A) Bhubaneswar : Odisha
- B) Ranchi : Jharkhand
- C) Dispur : Assam
- D) Ahmedabad : Gujarat
Show Answer & Explanation
Correct Answer: D) Ahmedabad : Gujarat
Explanation: Bhubaneswar, Ranchi, and Dispur are state capitals. The capital of Gujarat is Gandhinagar, not Ahmedabad.
42. What is the chemical name of Vitamin C?
- A) Ascorbic Acid
- B) Retinol
- C) Thiamine
- D) Tocopherol
Show Answer & Explanation
Correct Answer: A) Ascorbic Acid
Explanation: Vitamin C is ascorbic acid. Retinol is Vitamin A, Thiamine is B1, and Tocopherol is Vitamin E.
43. Which storage technology uses solid-state flash memory without any spinning mechanical platters?
- A) Hard Disk Drive (HDD)
- B) Solid State Drive (SSD)
- C) CD-RW
- D) Magnetic Tape
Show Answer & Explanation
Correct Answer: B) Solid State Drive (SSD)
Explanation: SSDs store data persistently on integrated NAND flash memory chips, providing silent and faster access speeds.
44. The ratio between the length and breadth of a rectangular plot is 5:3. If the perimeter is 160 m, find its area.
- A) 1200 m²
- B) 1500 m²
- C) 1600 m²
- D) 1800 m²
Show Answer & Explanation
Correct Answer: B) 1500 m²
Explanation: 2(5x + 3x) = 160 ⇒ 16x = 160 ⇒ x = 10 m. Length = 50 m, Breadth = 30 m. Area = 50 × 30 = 1500 m².
45. Which mountain range traverses the state of Odisha from the northeast to the southwest?
- A) Eastern Ghats
- B) Satpura Range
- C) Aravalli Range
- D) Vindhya Range
Show Answer & Explanation
Correct Answer: A) Eastern Ghats
Explanation: The Eastern Ghats pass diagonally across Odisha, dividing the interior plateaus and river basins from the coastal plains.
46. Under which Article of the Constitution is the Attorney General for India appointed by the President?
- A) Article 74
- B) Article 76
- C) Article 78
- D) Article 148
Show Answer & Explanation
Correct Answer: B) Article 76
Explanation: Article 76 provides that the President shall appoint a person qualified to be a Supreme Court Judge as the Attorney General for India.
47. Which blood vessel carries oxygenated blood from the lungs directly into the left atrium of the heart?
- A) Pulmonary Artery
- B) Pulmonary Vein
- C) Superior Vena Cava
- D) Aorta
Show Answer & Explanation
Correct Answer: B) Pulmonary Vein
Explanation: Pulmonary veins are unique among veins in the adult human body as they carry oxygen-rich blood from the pulmonary capillaries back to the heart.
48. In Microsoft PowerPoint, which key is pressed to immediately end or exit an ongoing slide show?
- A) Esc
- B) Ctrl + Q
- C) F5
- D) Backspace
Show Answer & Explanation
Correct Answer: A) Esc
Explanation: Pressing the Escape (Esc) key immediately halts the full-screen slide presentation and returns to the normal slide editor.
49. When seen through a vertical mirror, a wall clock shows 3:15. What is the actual time on the clock?
- A) 8:45
- B) 9:45
- C) 8:15
- D) 7:45
Show Answer & Explanation
Correct Answer: A) 8:45
Explanation: Mirror-time formula: Subtract the given time from 11:60. 11:60 - 3:15 = 8:45.
50. The famous Rourkela Steel Plant in Sundargarh was established in 1955 with technical collaboration from which country?
- A) Soviet Union (USSR)
- B) West Germany
- C) United Kingdom
- D) United States
Show Answer & Explanation
Correct Answer: B) West Germany
Explanation: Rourkela Steel Plant (RSP) was built in partnership with West German consortiums (Krupp and Demag) and was the first integrated steel plant built by the public sector in India.