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

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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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