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Q1. Which of these gases was first chemically isolated in 1895 by British Chemist William Ramsay?
Correct answer : 4
Q2. Among the following which one is NOT a non-metallic mineral?
Correct answer : 4
Q3. Acetyl CoA is a
Correct answer : 1
Q4. The citric acid cyclic reactions end with the formation of which of the following?
Correct answer : 4
Q5. Conversion of pyruvic acid into acetyl CoA involves………
Correct answer : 2
Q6. Match the following correctly: A) Lignite 1)Copper B)Bauxite 2)Iron C)Magnetite 3)Aluminium D)Pyrite 4)Coal
Correct answer : 3
Q7. Which is the leading sulphur producing country in the world?
Correct answer : 2
Q8. Iron is obtained mostly from ………………
Correct answer : 4
Q9. ………………is the largest Mercury producing country in the world.
Correct answer : 2
Q10. Republic of Congo is one of the leading producers of .......
Correct answer : 3
Q11. Which pair of countries are the leading producers of Mica?
Correct answer : 1
Q12. Which pair of countries are the leading producers of Rock Phosphate?
Correct answer : 4
Q13. .......is the leading producer of Uranium.
Correct answer : 2
Q14. What is the quality of basic slag, a byproduct of steel plants?
Correct answer : 4
Q15. Which state of India is the largest producer of antimony (Sb)?
Correct answer : 3
Q16. Which state is the largest producer of bauxite>
Correct answer : 1
Q17. Which state of India is the largest producer of copper?
Correct answer : 1
Q18. Lead, ingested or inhaled, is a health hard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? (1) smelting units (2) pens and pencils (3) Paints (4) Hair oils and cosmetics. Pick the correct answer.
Correct answer : 4
Q19. Aluminium usually occurs in the form of….
Correct answer : 4
Q20. Which state of India is the largest producer of Thorium?
Correct answer : 2
Q21. ………………is the largest producer of Sulphur.
Correct answer : 1
Q22. …………………is the largest producer of Manganese
Correct answer : 4
Q23. ……………….is the largest producer of Lignite
Correct answer : 4
Q24. Manganese is extracted from .........ore
Correct answer : 1
Q25. What is the most abundant element found in sea water?
Correct answer : 2
Q26. Chadwick's discovery was
Correct answer : 3
Q27. Electrons was discovered by……………
Correct answer : 2
Q28. Deuterium oxide is known as ........
Correct answer : 3
Q29. The main gas causing the green house effect is.......
Correct answer : 2
Q30. The gases used in different types of welding would include……………….
Correct answer : 3
Q31. Stainless steel is an alloy of Iron,…………………..
Correct answer : 2
Q32. The concentration of acid in batteries is measured by using………….
Correct answer : 2
Q33. Of the following, which one represents a chemical change?
Correct answer : 4
Q34. "Saccharimeter" is used to determine ………………….
Correct answer : 3
Q35. The instrument used to determine the volume changes in chemical reaction is known as
Correct answer : 4
Q36. The hardest substance available on earth is.......
Correct answer : 2
Q37. The gas used in ana electric bulb is ......
Correct answer : 3
Q38. The acid present in butter milk is……………….
Correct answer : 1
Q39. "Green House" effect is due to .....
Correct answer : 2
Q40. Which oxide of Nitrogen is used as "anaesthetic" in the medical field?
Correct answer : 1
Q41. "Vinegar" is an aqueous solution of ........
Correct answer : 3
Q42. "Heavy Water" is used in ....
Correct answer : 3
Q43. "Bauxite" is an ore of………..
Correct answer : 2
Q44. The element which has more than one form is known as .......
Correct answer : 1
Q45. The substance commonly used as a cooling agent in refrigerators is ......
Correct answer : 2
Q46. Among the following gases, which one is not found in the air?
Correct answer : 4
Q47. Brass is an alloy of
Correct answer : 3
Q48. The lightest substance is ………………
Correct answer : 2
Q49. The metal whose salts are sensitive to light is ........