(A) 1.5
(B) 3.0
(C) 0.5
(D) 4.5
Answer: (C) 0.5
Category: Chemistry MCQs Class 9
Chemistry solved multiple choice questions (MCQs) for class 9 with answers.
The oxidation state of Mn in KMnO4 is:
(A) +8
(B) +3
(C) +7
(D) +4
Answer: (C) +7
The answer to: The oxidation state of Mn in KMnO4 is: +7
By-product(s) produced in Nelson’s cell is/are:
(A) NaOH
(B) H2 only
(C) Cl2 only
(D) both B and C
Answer: (A) NaOH
The mass / mass concentration of a solution is 50 %. If the mass of the solution is 500 grams then the mass of solute will be:
(A) 220 g
(B) 50 g
(C) 300 g
(D) 250 g
Answer: ()
Which of the following is used for cooking utensils?
(A) Gold
(B) Iron
(C) Plastics
(D) Silver
Answer: (D) Silver