1:Most abundant in the universe?
Answer:Hydrogen
2:Most abundant in earth crust?
Answer:Oxygen
3:Most Abundant in human body
Answer:Oxygen
4:Most ductile element?
Answer:Gold
5:Most abundant metallic element in the human body
Answer:Calcium
6:Most abundant in the earth,s atmosphere?
Answer:Nitrogen(78%)
7:Most abundant mattallic element in the earth's crust?
Answer:Aluminium
8:Lowest Melting and boiling points?
Answer:Helium
9:Rarest in the earth's atmoshpere?
Answer:Radon
10:Lightest gas at STP?
Answer:Hydrogan
11:Heaviest gas at standard temperature pressure?
Answer:Radon
12:Rarest in earth's crust?
Answer:Astatine
13:Least dense metal at room temperature?
Answer:Lithium
14:Deniest and heaviest element at room temperature?
Answer:Osmium
15:Highest melting and boiling points?
Answer:Tungstun
16:Lowest melting and boiling points for a metallic elements?
Answer:Mercury
17:Highest thermal expansion at room temperature?
Answer:Caesium
18:Lowest thermal expansion at room temperature?
Answer:Diomond
19:Hardest known substance?
Answer:Diomond
20:Most isotope (including nuclear isomers)
Answer:Silver(46)
21:Most stable radioactive isotope?
Answer:Tellurium 130
22:Least stable radioactive isotope?
Answer:Lithium 56
23:Least Isotope including neclear isomers?
Answer:Hydregen(3)
24:Most toxic nonradioactive element in air?
Answer:Beryllium
25:Most toxic radioactive isotope in air?
Answer:Thorium 238
26:Most toxic radioactive isotope in water?
Answer:Radium 228
27:Most reactive chemical elements?
Answer:Flurine
28:The hardest metel?
Answer:Chromium
29:The radioactive gaseous lelement?
Answer:Radon
30:The radio active liquid element?
Answer:Francium
31:Largest atom?
Answer:Francium
32:Smallest atom?
Answer:Helium
33:Maximum electron affinity?
Answer:Chlorine
34:Rarest metel?
Answer:Rhodium
35:Most electropositive elements?
Answer:Caesium
36:Lowest atomic volume?
Answer:Baron
37:Highest atomic number of any stable elements?
Answer:Bismuth
38:Second most abudant element in the universe?
Answer:Helium
39:Most electromagnetic elements of the periodic table
Answer:Flurine
40:Most abundant inert gas in air?
Answer:Argon
41:Most abundant naturally radioactive elements?
Answer:Uranium
42:Second most abundant metal in the earth's crust?
Answer:Iron
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ReplyDeleteLook at the statistics of the PSC Result dates of past few years. By seeing those dates, one thing is clear that every year authorities are publishing the PSC result on last week of December mostly on 30th December. This helps us to estimate the expected PSC exam result date and it would be around 29th December 2019 and the time would be around afternoon. The exact date and time details will be updated once authorities give the information. psc result 2019
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