A. Carbon monoxide
B. Oxygen
C. Nitrogen
D. Argon
View AnswerD. Argon
Chemistry MCQs
9th Class Chemistry MCQs Test for Exam Preparation with Answers
All Chapters
1 . Fundamentals of Chemistry
42
2 . Structure of Atoms
19
3 . Periodic Table and Periodicity
13
4 . Structure of Molecules
10
5 . Physical States of Matter
8
6 . Solutions
9
7 . Electrochemistry
8
8 . Chemical Reactivity
4
Which one of the following element is found in most abundance in the earth’s crust?
A. Oxygen
B. Aluminum
C. Silicon
D. Iron
View AnswerA. Oxygen
The most abundant element occurring in the oceans is?
A. Oxygen
B. Hydrogen
C. Nitrogen
D. Silicon
View AnswerA. Oxygen
Which one of the following can be separated by physical means?
A. Mixture
B. Element
C. Compound
D. Radical
View AnswerA. Mixture
Industrial chemistry deals with the manufacturing of compounds?
A. In the laboratory
B. On micro scale
C. On commercial scale
D. On economic scale
View AnswerC. On commercial scale