SciencE

Q.
Brass gets discoloured
in air because of the
presence of which of
the following gases in
air?
A.
Oxygen
B.
Hydrogen sulphide
C.
Carbon dioxide
D.
Nitrogen
Ans;b

Comments

Popular posts from this blog

ಶಿಕ್ಷಕರ ಸೇವಾ ಪ್ರಮಾಣ ಪತ್ರ.

NMMS 2019 PAPER-1, ಮಾನಸಿಕ ಸಾಮರ್ಥ್ಯ ಪರೀಕ್ಷೆ (GMAT)