40 Important General Science Question and Answers 01 | santhoshnair.net

40 Important General Science Question and Answers 01

40 Important General Science Question and Answers 01

1. Which element has the lowest melting point? - Helium
2. The element with the highest density-111 - Osmium
3. The lightest metal - Lithium
4. The element with the highest boiling point - Tungsten
5. The most abundant elements in the Sun in the correct order - H, He, O
6. Which element has the second highest density? - Iridium
7. The most abundant metal in human body - Calcium
8. What percent of the atmosphere is Oxygen? - 20.95
9. What percent of the mass of human body is Oxygen? - 65
10. Select the correct order of abundance in the atmosphere - N, O, Ar, CO2
11. The most common element on the earth's crust by mass - Oxygen
12. The most abundant element in the moon - Oxygen
13. Which metal has the highest melting point? - Tungsten
14. The most abundant metal in Earth - Iron
15. The element with atomic number 100 - Fermium 
16. Water has maximum density at __ degree Celsius - 4
17. The gas using for filling balloons - Helium
18. Beryllium aluminum silicate is known as - Emerald
19. The isotope using for radiocarbon dating - Carbon-14
20. Which is not correctly matched? - Helium-Chemical sun
21. The best non-metallic conductor of electricity - Graphite
22. The first Trans Uranic element - Neptunium
23. Most chemically reactive element? - Fluorine
24. The colour of sodium vapour lamp - Yellow
25. The essential constituent chlorophyll - Magnesium
26. The first to isolate aluminium from bauxite - Charles Martin Hall
27. The main constituent of bone - Calcium phosphate
28. Which is used for the vulcanisation of rubber - Sulpher
29. The most abundant inert gas - Argon
30. Which is known as the 'metal of future'? - Titanium 
31.Galvanisation is the process of coating of on other metals. - Zinc
32. What is known as the king of poisons'? - Arsenic
33. What is used in fireworks for the red flame? - Strontium
34. The first element that was produced artificially - Technitium
35. Chemical used for artificial rain - Silver iodide
36. The rarest metal - Rhodium
37. The best conductor of heat and electricity - Silver
38. The most electropositive stable element - Caesium
39. Barium imparts ___ colour to flames - Green
40. What is known as 'little silver'? - Platinum


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