Hardness of water, Why does calcium sulphate form scales in high pressure b...

Why does calcium sulphate form scales in high pressure boilers

Illustrate structure of the water molecule, Q. Illustrate Structure of the ...

Q. Illustrate Structure of the Water Molecule? Ans. A water molecule is composed of two hydrogen atoms and one oxygen atom covalently bonded together. The following anim

Hardness, 1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)...

1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a

Principal quantum number of an atom represents, Principal quantum number of...

Principal quantum number of an atom represents : (1) Size of the orbital (2) Spin angular momentum (3) Orbital angular momentum (4) Space orientation of the orbital

Ionic bond,

The energy that opposes dissolution, The energy that opposes dissolution of...

The energy that opposes dissolution of a solvent is: (1) Hydration energy                     (2) Lattice energy    (3) Internal energy      (4) Bond energy Ans:  B

What is the chemical formula for benedict solution??, Chemical formula of b...

Chemical formula of benedict solution is Feso 4 .7H 2 o

The total number of unpaired electrons & atoms of element, The total numbe...

The total number of unpaired electrons in d- orbital's of atoms of element of atomic number 29 is: (1) 10         (2) 1        (3) 0     (4)5 Ans:   0

Different between scale and sludge formation in boiler?, What is the differ...

What is the difference between scale and sludge formation...give difference between them more then 6 example.

Tests of phenol - hydrocarbon, Tests of phenol - Hydrocarbon (a) Aqueou...

Tests of phenol - Hydrocarbon (a) Aqueous solution of phenol gives a violet colouration with a drop of ferric chloride. (b) Aqueous solution of phenol gives a white precipit