vishnu Quiz
Question Number 1
zno+c= .......+.........
A. zn+o
B. zn+oc
C. zn+co
D. zn+o
E. zno
F. co
Question Number 2
what is the ph of acid rain
A. 5.6
B. 6.5
C. 4.5
D. 2.3
E. 1.2
F. 0.3
Question Number 3
how many teeth of human mouth
A. 56
B. 32
C. 31
D. 30
E. 33
F. 34
Question Number 4
zn+na= ........
A. zna
B. za
C. no
D. co
E. zno
F. za