Best Biochemistry Interview Questions Part – 4
What Are The Compounds Used For Extraction Of Gold And Silver?
NaCN and KCN
What Is The Formula Of Hypo In Oxidation State Of Sulphur?
The formula of Sodium Thio Sulphate is Na2S2O3. H2O is called as hypo Oxidation state of Sulphur in it is +6 0r 2.
How Many Elements Are There In 3d Series Of First Transition Series?
Ten elements from Sc (Z=21) to Zn (z=30) or {Sc –scandium to Zn (zinc)}.
Why Nitrogen Cannot Form Penta Halides?
Because of the absence of dorbital in its valency shells Ortho Phosphoric acid is. Give oxidation no of phosphorous in it.
H3PO4ortho phosphoric acid Oxidation state of phosphorous is +5.
What Is The Super Phosphate Of Lime?
Ca (H2Po4)2 caSO4. 2H2O. Super phosphate of lime is also called as Calcium super Phosphate Sixth group elements are called as.Chalcogens (ore forming elements)
Which Elements Are Present In Electron?
Electron consist of 95 % mg, 5% Zn.
Which Are The Most Abundant Metal And Third Abundant Element In The Earth Crust?
Aluminium (Al) (7.28%)
What Is Inert Pair Effect?
The reluctances of ns electrons in the participation of bond formation is called inert pair effect.
What Does Ammonal Contain? For What Purpose It Is Used.
It is a mixture of ammonium nitrate and aluminium powder is called ammonal, which is used as an explosive in Bombs.
What Is Thermite Mixture?
A mixture of Fe2O3 and ammonium powder in 3:1 ratio is called Thermite mixture.
Which Univalent Element Cannot Form Alums And Why?
Lithium (Li+) does not produce alums because of its very small size.
How Do We Prepare Diborane?
The Diborane (B2H6) is prepared by the reduction of BCl3 with aluminium hydride B2H6+3AlCl3+3LiClà4 BCl3+3LiAlH4
What Is Banana Bond? Diborane Contains How Many Banana Bonds
In Diborane BHB, bridge, which is formed by the sharing of two electrons, is called banana bond or Tau bond Diborane contains two banana bonds.
How Much Amount Of Energy Is Required To Break The Triple Bond In Nitrogen Molecule?
225 Kcal/mole or 945.4 KJ/mole
How Many Sigma And Pi Bonds Are Present In Nitrogen Formula?
Each nitrogen molecule contain one sigma and 2 Pi bonds
What Are The Important Sources Of Phosphorus?
Sources of Phosphorous are Phosphate rocks
Flourapatite {2Ca3 (PO4)2 CaF2}
Phosphorite {Ca3 (PO4)2}
What Is The Molecular Formula, Structure, And Bond Angle Of Phosphorous?
P4 Phosphorous molecule (Tetra atomic)
Structure - Tetrahedral
Bond angle – (60 degrees)