Chemistry General Bits

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Chemistry General Knowledge Bits

1.      What is the Valency of Carbon atom ?
Four
2.      Which enzyme devides Glucose ?
Zymase
3.      We all know Aufabau Pinciple…what is the meaning of Aufbau ?
Construction
4.      Chemicall symbol of Iron is ?
Fe
5.      If the Nuclear charge increases Electron affinity ( increases or decreases) ?
Increases
6.      Who discovered Anode Rays ?
Goldstein
7.      In Chemistry Ionisation energy measurement unit ?
KJ/mol
8.      Waht is the bond angle in water molecule ?
104.5
9.      Waht is the Shape of P orbital ?
Dumbbell
10. what is the unit for atomic Radius ?
Angstrom
11. What is the pH value of Pure water ?
Seven(7)
12. What is the full form of pH ?
Potential of Hydrogen
13. What is a Base ?
Solutions with a pH greater than Seven are called as Bases.
14. What is the formula for pH calculation ?
-log[H3O+]
15. What molecule in our bodies is a catalyst ?
Protien
16. Lipids are Fats (True or False) ?
True
17. Partial pressure of ga measured in ?
mmHg or kPa
18. How many electrons in Shell 4 ?
32
19. Full form of RNA ?
Ribo Nucleic Acid
20. SI unit for Molality is ?
Moles of Solute per kilogram of Solvent
Mol/kg
21. Who discovered DNA ?
DeoxiriboNucleic Acid(DNA) was discovered by James Watson and Francis Crick
22. Define Ionisation Potential ?
Amount of energy required to remove an electron from an isolated atom or molecule
23. Electrons having equal energy levels are called as ?
Degenerate Orbitals
24. Electron Affinity of Magnesium is ?
Zero
(helium,Krypton,Zinc,Manganese,Argon,Neon,Xeno,Radon,Neon,Beryllium elements electron affinity is also Zero)
25. Colour of Carbon is ?
Black
26. The Acid base pair which differ by proton is called ?
Conjugate Acid
27. According to Bronsted Lowry theory  a base is a _______ ?
Proton Acceptor
28. The Concept of pH scale was introduced by ?
Soren Peder Lauritz Sorensen
29. The pH of water decrease with increase of _____ ?
Temperature
30. Potassium Symbol ?
K
31. Who proposed Vital force theory ?
Berzillius
32. Geocentric theory was proposed by ?
Ptolemy
33. Define catenation ?
Self linking property of Carbon to form long Chain is called as Catenation
34. Who proposed elliptical orbits ?
Somerfield
35. ________ determines the shape of an Orbital ?
Orbital Angular momentum quantum number
36. Nitrous oxide Formula ?
N2O
37. Ideal Gas Equation ?
Pv=nrt
Where P=Pressure
V=Volume
N=number of moles
R=Gas Constant
T= Temperature
38. Define Homologus series ?
Series of Compounds with the same general formula
39. What is Inert gas ?
A gas which is non reactive under a set of given conditions is called as Inert gas .
40. Anions have _____ charge ?
Negative
41. The Shape of Methane ?
Tetrahedron
42. Atomic number of Helium is ?
2
43. How many Isotopes does standard hydrogen atoms have ?
Zero
44. The ionic product of water varies with ?
Temperature
45. Electron name was given by ?
Johnstone Stoney
46. Who invented Electron ?
J J Thompson
47. What are isotones ?
Atoms or ions having same number of neutrons are called Isotones
48. x-ray range of wave length ?
0.01 to 10 nm
49. Who modified bohr theory by describing orbit as elliptical ?
Somerfield
50. Uncertainity principle proposed by ?
Heisenberg


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