Ch#1 class 9 th MCQ’s ...
Ch#1
class 9th
MCQ’s
1: Base quantities are
a)
5
b) 6 c) 7 d) 8
2: The prefix mili is equal to
a)
101 b) 10-3 c) 10-6 d) 10-9
3: Mass of earth is
a)
6×1024Kg b) 6×1027g c) 4×1026Kg d) a and
b
4: Least count of meter rule is
a)
1mm b) 0.1mm c) 0.1cm d) 0.01mm
5: If the pitch of screw gauge is 1mm and the number of
divisions on circular scale is 50. What is the least count of screw gauge?
a)
0.1mm b) 0.01mm c) 0.001mm d) 0.02mm
6: What is the least count of vernier scale?
a)
0.01mm b) 0.1mm c) 0.001cm d) 1mm
7: In the number 0.124 how many significant figures are
there.
a)
3
b) 4 c) 2 d) 1
8: In which of the following numbers zero is not the
significant digit.
a)
1.110 b) 0.111 c) 1.101 d) 1.1100
9: The unit of current is
a)
A b)
kg
c) m d) s
10: The unit of force is
a)
Kg b)
N c)
A d) Nm
Short Questions:
1: What is Science?
2: What is the difference between base quantities and drive
quantities?
3: What is vernier calipars?
4: Find the least count of screw gauge.
5: What is physical balance?
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