Wednesday, April 24, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

General Science (Physics) Quiz For WBCS, WBPSC Exams P6


Page 6

151251. 1 nm is equivalent to
A
10 mm
B
0.01 mm
C
10 A
D
100 A
C
Correct Answer: C. 10 A
160552. The Earth's magnetic field
A
is centered exactly at the Earth's center.
B
originates in a permanently magnetized iron core.
C
never change
D
has reversed itself many times
D
Correct Answer: D. has reversed itself many times
153853. After a shower, it becomes difficult to drive a car at high speed on the wet road because
A
Friction becomes zero.
B
More force cannot be applied to the car.
C
Friction decreases.
D
Friction increases
C
Correct Answer: C. Friction decreases.
152254. A man presses the earth least when he is
A
Running
B
Lying flat
C
Standing
D
Sitting
B
Correct Answer: B. Lying flat
149355. What is stored in a storage cell?
A
Lead or some other metal
B
Chemical energy
C
Electric charge
D
Electric potential
B
Correct Answer: B. Chemical energy
256156. Bauxite is the ore of
A
iron
B
zinc
C
tin
D
aluminium
D
Correct Answer: D. aluminium
157557. Materials like Germanium and Silicon are called
A
Metals
B
Semi-conductors
C
Insulators
D
Conductors
B
Correct Answer: B. Semi-conductors
156158. Of the following which is different from the others?
A
X-rays
B
Thermal electrons
C
Cathode rays
D
Photoelectrons
A
Correct Answer: A. X-rays
149759. The viscosity of a liquid
A
Independent of temperature
B
Decreases with increase in pressure
C
Increases with increase in temperature
D
Decreases with increase in temperature
D
Correct Answer: D. Decreases with increase in temperature
152960. Which one of the following is the weakest force?
A
Gravitational force
B
Electrostatic force
C
Nuclear force
D
Electromagnetic force
A
Correct Answer: A. Gravitational force



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