(A) Chlorine
(B) Bromine
(C) Iodine
(D) Fluorine
Author:
Electronic configuration of an atom having atomic number 20 is?
(A) 2,8,10
(B) 2,6,8,4
(C) 2,8,8,2
(D) 2,10,8
When water itself combines chemically with some element or mineral if is called?
(A) Desalination
(B) Carbonation
(C) Hydration
(D) Oxidation
A powerful eye irritant present in smog is?
(A) Carbon dioxide
(B) Peroxyacetyl nitrate
(C) Nitric oxide
(D) Sulphur dioxide
Which among following is found in kidney stone?
(A) Calcium acetate
(B) Sodium chloride
(C) Calcium oxalate
(D) Sodium oxalate
Detergent action of soap and synthetic detergent is due to their?
(A) Ionization
(B) Interfacial area
(C) High molecular weight
(D) Emulsifying properties
On descending a group in a periodic table electropositive character of elements?
(A) Decrease
(B) Increase
(C) Remains the same
(D) None of the above
Butter is colloid it is formed when?
(A) Water is dispersed in fat
(B) Fat is dispersed in solid casein
(C) Fat global are dispersed in water
(D) None of the above