Question

Note: Attempt all questions. All question carry equal marks.
Choose the correct answer:-
1. Corrosion of metal in volves -
a) Physical reaction
c) Both (a) and (b)
b) Chemical reaction
d) None of these
2. Which is largest amongst 5/8, 2/3, 7/9, 3/5?
a) 5/8
b) 2/3
d) 3/5
c) 7/9
3. Surface area of wooden table top of diameter 1.4 m is -
a) 1,54 m²
b)3.08m?
c) 7.7m
d)10.78m?​

Answer 1

ans: 1    b) chemcal change

ans : 2  c) 7/9

ans :3    b) 3.08m