Chemistry General Bits

-





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


Comments

Post a Comment

Popular posts from this blog

What is OSI model ? Explain the Layers of OSI model with diagram .

-
Image
What is OSI model ? Explain the Layers of OSI model with diagram . What is OSI model? The OSI model (Open System Interconnection) model defines a computer networking framework to implement protocols in seven layers. A protocol in the networking terms is a kind of negotiation and rule in between two networking entities. Layers of OSI model: Physical layer The Physical layer is also called as the Layer 1. Here are the basic functionalities of the Physical layer: ·        Responsible for electrical signals, light signal, radio signals etc. ·        Hardware layer of the OSI layer ·        Devices like repeater, hub, cables, ethernet work on this layer ·        Protocols like RS232, ATM, FDDI, Ethernet work on this layer Data Link layer The data link layer is also called as the Layer 2 of the OSI model. Here are the basic functionalities of the data link layer: ·        Responsible for encoding and decoding of the electrical signals into bits. ·
Read more

BUS AND MEMORY TRANSFERS

-
Image
BUS AND MEMORY TRANSFERS          A typical digital computer has many registers, and paths must be provided to transfer in formation form one register to another. The number of wires will be excessive if separate lines are used between each register and all other registers in the system. A more efficient scheme for transferring information between registers in a multiple-register configuration is a common bus system. A bus structure consists of a set of common lines, one for each bit of a register, through which binary information is transferred one at a time. Control signals determine which register is selected by the onus during each particular register transfer.           One way of constructing a common bus system is with multiplexers. The multiplexers select the source register whose binary information is then placed on the bus. The construction of a bus system for four registers is shown is Fig . Each register has four bits, numbered 0 through 3. The bus consists
Read more

General Science(Biology) Bit

-
General Science(Biology) Bit Questions 1.       Who invented Pencillin ? Alexander Fleming 2.       A Sphygmomanometre is used to measure ? Blood Pressure 3.       Total Number of Chambers in Human Heart ? Four 4.       Photo Electric Effect Invented by ? Albert Einstein 5.       What are leucocytes ? White blood cells 6.       Who is called as Father of Evolution ? Charles Darwin 7.       What is the full form of ICBN ? International Code for Botanical Nomenclature 8.       The Light reaction happens in which membrane ? Thylakoid 9.       The Chain of Amino Acid is also known as ? Polypeptide 10. Influenza infects which system in human body ? Respiratory system 11. ______ measure s how far a wave rises and falls ? Amplitude 12. Buyoyant force can be calculated using ______ Principle ? Archimedis principle 13. Which animal is closest to humans ? Chimp 14. How many lungs are there in Human body ? Two 15. The study Poll
Read more