(A) 2P
(B) 2S
(C) 1S
(D) 3S
Answer: (C) 1S
Category: Chemistry MCQs Class 9
Chemistry solved multiple choice questions (MCQs) for class 9 with answers.
Identify the number of electrons that f-subshell can accommodate.
(A) 2
(B) 6
(C) 10
(D) 14
Answer: (D) 14
How many atoms are there 1.25 moles of Zinc?
(A) 6.53×1023 Zn atoms
(B) 7.53×1023 Zn atoms
(C) 8.53×1023 Zn atoms
(D) 9.53×1023 Zn atoms
Answer: (B) 7.53×1023 Zn atoms
The empirical formula for Caffeine (C8H10N4O2) is:
(A) C5H5N2O
(B) C4H5N2O
(C) C4H5NO
(D) C4H5NO2
Answer: (B) C4H5N2O
Which of the following oxides is the Most basic oxide?
(A) SrO
(B) BaO
(C) CaO
(D) MgO
Answer: (B) BaO