Postal Examination
A Complete Guide
General Science Question and Answer for Compititative Exam
1. The function of fuse in an electric circuit is
A. To avoid electric shock
B. To regulate the flow of the current
C. To break the circuit in case of overloading or short circuiting
D. None of the above
C. To break the circuit in case of over
loading or short circuiting
2. Which of the following is a semiconductor ?
A. glass
B. silicon
C. aluminium
D. phosphorous
B. silicon
3. The unit of astronomical distance is
A. Light year
B. Nautical mile
C. Angstrom
D. Kilometer
A. Light year
4. Which of the following device is used for measuring the depth of the sea ?
A. Altimeter
B. Manometer
C. Fathometer
D. Hydrometer
C. Fathometer
5. What is the source of electric energy in an artificial satellite ?
A. a thermopile
B. a dynamo
C. solar cells
D. a mini nuclear reactor
C. solar cells
6. The atomic number of the element is equal to
A. No. of electrons
B. No. of protons
C. No. of neutrons
D. Sum of protons and neutrons
B. No. of protons
7. Who discovered the first nuclear reaction?
A. Chadwick
B. Rutherford
C. Fermi
D. Currie
B. Rutherford
8. The most widely used metal is
A. Copper
B. Gold
C. Aluminium
D. Iron
D. Iron
9. A common florescent tube contains
A. Argon at low pressure
B. Mercury oxide and neon
C. Sodium vapour
D. Mercury vapour at low pressure
D. Mercury vapour at low pressure
10. The second most abundant metal in the earth's crust is
A. Silicon
B. Aluminium
C. Iron
D. Copper
B. Aluminium
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