Chemistry General Bits

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Chemistry General Knowledge Bits

0.      Uncertainity principle was  proposed by ?
Heisenberg
1.      What is the Hardest substance available ?
Diamond
2.      The mass of _____ is related to the number of moles (n)
Gas
3.      Number of Particles (Atoms or Molecules) of an ideal gas in a given volume is called as _____ Constant ?
Loschmidt Constant or Loschmidt number
4.      define most Probable Velocity ?
Velocity of maximum fraction of molecules At a constant temperature
5.      The Atomic number and symbol of Gold ?
79,Au
6.      On the Kelvin Scale Zero is equivalent to ?
-273.150c
7.      ________ decreases glucose level in blood ?
Insulin
8.      _________ increase glucose level in blood ?
Glucagon
9.      Structural unit of Crystal structure ?
Structural motif
10. Potassium crystallizes with ?
Body centric Cubic Lattice
11. If the molecular mass of a substance is 12 g then the molecular mass of substance is ?
12 g/mol
12. Basicity of Sulphuric acid is ?
2
13. Germanium symbol ?
Ge
14. Periodic table consists of ______ number of elements ?
118
15. .Electro negativity on Mulliken scale is limited to ___ atoms only ?
Monovalent
16. What is the Ration of Radius of 2 nd and 3 rd Bohr orbit is ?
4 : 9
17. The Band Spectrum is Caused by ?
Molecules and Hot Metal
18. The Valency of Sulphur in Sulphur dioxide is ?
4(Four)
19. Which group elements have lowest ionization potential in the long form of Periodic table ?
I A group
20. Most Electro positive element in periodic table is ?
Cesium
21. The Principle involved in the separation of Uranium isotope ?
Graham’s law
22. What is Bond angle ?
A Bond Angle is the angle formed between three atoms across at least two bonds
23. what is Bond polarity ?
Bond polarity describes the sharing of electrons between atoms
24. Symbol of Caustic Soda is ?
NAoH
25. Which is called as laughing gas ?
Ntrous Oxide
26. shape of water molecule ?
Bent
27. Who suggested Covalent Bond ?
G K lewis
28. Which flame is used in Glass boiling operations ?
Oxy Acetelyne
29. Acid turns Litmus paper from Blue colour to ____ Colour ?
Red
30. What is aldose ?
Aldose is  a monosccheride which contains only one aldehyde group per molecule
31. Which enzyme breaks Sucrose ?
Invertase
32. Barytes is Ore of ?
Magnesium
33. Who suggested Co-ordinate Covalent Bond ?
N Sidgwick
34. What is the Bond length in Graphite ?
1.42
35. Which is the widely used solvent after water ?
Ethyl Alcohol
36. Haemoglobi consists of _____ number of Amino Acids ?
574
37. Naphthelene is soluble in Which type of solvents ?
Non Polar
38. Who proposed the dual nature of Electron ?
Louis de Broglie
39. If the pH value of a solution is equal to ‘0’ then it is called ?
Neutral solution
40. Numbe of Monosaccharide units in oligo saccharide ?
2 to 9
41. Symbol of Mercury ?
Hg
42. What is the atomic mass of Silver ?
107.8682
43. salt like structure in Amino acid are called as ?
Zwitterions
44. Which test is also called as Silver mirror test ?
Tollen Test
45. Molases is main by product of which industry ?
Sugar industry
46. Electron Wave Equation is proposed by ?
Erwin Schrodinger
47. Who  proposed Law of Octaves ?
J A R Newlands
48. What is the colour of Methyl orange indicator in acid ?
Red
49. In Polymers preparation ____ are used ?
Alkenes
50. Which solution is called Tollen reagent ?
Ammonical Silver Nitrate


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