Refresher Questions for Exam Preparation (Set – 41)
1. A double convex air bubble trapped inside water will behave as which type of lens? – Convex lens.
2. What physical phenomenon is responsible for the vibrant colors seen in a soap bubble? – Interference.
3. Which specialized instrument is used to measure the high temperature of the sun? – Pyrometer.
4. Name a well-known sex-linked disease that affects visual perception. – Colour blindness.
5. Which hormone is primarily responsible for controlling carbohydrate metabolism in the human body? – Insulin.
6. From which part of the body does blood acquire its Red Blood Cells (RBCs)? – Bone Marrow.
7. Which medical condition is a direct result of a deficiency in Vitamin A? – Night Blindness.
8. What is the primary excretory product of an earthworm? – Urea.
9. Which planet in our solar system is closest in size and mass to the Earth? – Venus.
10. Which imaginary line divides the Earth into the Northern and Southern Hemispheres? – Equator.
11. In which state of India is the famous Sun Temple of Konark located? – Odisha.
12. Who was the first woman to be appointed as a Judge of the Supreme Court of India? – M. Fathima Beevi.
13. Which fundamental right was described by Dr. B.R. Ambedkar as the "Heart and Soul of the Constitution"? – Right to Constitutional Remedies.
14. Which layer of the atmosphere contains the ozone layer that protects us from UV radiation? – Stratosphere.
15. What is the standard currency used in Bangladesh? – Taka.
16. Which Indian state is the largest producer of groundnuts? – Gujarat.
17. Who presided over the first session of the Indian National Congress in 1885? – W.C. Bonnerjee.
18. Which river is known as the "Vridha Ganga" or the Ganges of the South? – Godavari.
19. What is the boiling point of water in the Fahrenheit scale? – 212°F.
20. Which chemical element is represented by the symbol 'Fe'? – Iron.
21. What is the average of three numbers if the first is twice the second, the second is twice the third, and their sum is 231? – 77 (The first number is 132).
22. If one-fourth of one-third of two-fifth of a number is 15, what is 40% of that number? – 180.
23. A man purchased a watch for Rs. 400 and sold it for Rs. 500; find his profit percentage. – 25%.
24. If the cost price of 10 articles is equal to the selling price of 8 articles, find the gain percent. – 25%.
25. Find the simple interest on Rs. 2000 at 5% per annum for 3 years. – Rs. 300.
26. If x + y = 10 and $ - y = 4, find the value of x2sq - y2sq. – 40.
27. A train 150 meters long crosses a bridge in 30 seconds at a speed of 54 km/hr; what is the length of the bridge? – 300 meters.
28. If 15 men can complete a work in 20 days, how many days will 10 men take to finish it? – 30 days.
29. What is the area of a circle with a radius of 7 cm? – 154 sq cm.
30. Which Vitamin is essential for the coagulation of blood? – Vitamin K.
31. The 'Dandiya' dance is most popularly associated with which Indian state? – Gujarat.
32. Who wrote the famous patriotic song 'Sare Jahan Se Achha'? – Muhammad Iqbal.
33. Which city is known as the 'Manchester of South India'? – Coimbatore.
34. What is the chemical name of common salt? – Sodium Chloride.
35. Which gas is most abundant in the Earth's atmosphere? – Nitrogen.
36. The 'Kaziranga National Park' is primarily famous for which animal? – One-horned Rhinoceros.
37. Which organ in the human body is affected by the disease 'Glaucoma'? – Eyes.
38. Who is known as the 'Frontier Gandhi'? – Khan Abdul Ghaffar Khan.
39. What is the maximum strength of the Lok Sabha as per the Constitution? – 552.
40. Which vitamin is easily destroyed during the process of cooking? – Vitamin C.
41. What is the unit of power in the SI system? – Watt.
42. Which metal is liquid at room temperature? – Mercury.
43. The 'Battle of Plassey' was fought in which year? – 1757.
44. Who is the author of the book 'My Experiments with Truth'? – Mahatma Gandhi.
45. Which planet is known as the 'Red Planet'? – Mars.
46. What is the minimum age required to become the President of India? – 35 years.
47. Which island group of India is located in the Arabian Sea? – Lakshadweep.
48. Which part of the plant is responsible for the process of photosynthesis? – Leaves.
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