(A) H2CO3
(B) CH
(C) CH2O
(D) HO
Mass number of an element is represented by?
(A) A
(B) Z
(C) K
(D) N
___ burns with brick red flame.
(A) Potassium
(B) Calcium
(C) Sodium
(D) Magnesium
The gas collected at cathode is?
(A) O3
(B) Cl2
(C) O2
(D) H2
___ is a weak electrolyte.
(A) Ca(OH)2
(B) NaCl
(C) NaOH
(D) H2SO4
Milk of magnesia is an example of?
(A) Solution
(B) True solution
(C) Colloids
(D) Suspension
Air is an example of a solution of?
(A) Liquid in gas
(B) Gas in gas
(C) Solid in gas
(D) Gas in liquid
___ is an example of amorphous solid.
(A) Plastic
(B) Diamond
(C) Sodium Chloride
(D) Glucose