General Science Quiz-22 for SSC CHSL/CGL 2016-17

Q1. In a transistor, the base is—
(a) An insulator 
(b) A conductor of low resistance 
(c) A conductor of high resistance 
(d) An extrinsic semiconductor 
Ans.(d)

Q2. Which instrument is used to measure depth of ocean?
(a) Fathometer
(b) Fluxmeter
(c) Endoscope
(d) Galvanometer
Ans.(a)

Q3. Which instrument is used in submarine to see the objects above sea level?
(a) Periscope
(b) Polygraph
(c) Photometer
(d) Pykometer
Ans.(a)

Q4. What is the measuring unit of length of light waves?
(a) Barrel
(b) Angstrom
(c) Knot
(d) Carat
Ans.(b)

Q5. Force of attraction between the molecules of different substances is called—
(a) Surface tension
(b) Cohesive force
(c) Adhesive force
(d) None of above
Ans.(c)

Q6. Which of the following is an insulator?
(a) copper
(b) ebonite
(c) glass
(d) both (b) & (c)
Ans.(d)

Q7. What happens to acceleration due to gravity(g), if angular speed of earth increases?
(a) increases
(b) decreases
(c) remains same
(d) none of the above
Ans.(b) 

Q8. Electric Motor converts—
(a) Electrical energy into light energy
(b) Mechanical energy into Electrical energy
(c) Electrical energy into mechanical energy
(d) None of the above
Ans.(c)

Q9.Why are ultrasonic waves are used for stirring liquid solutions?
(a) do not produce chemical reactions in the solution 
(b) can produce perfectly homogeneous solution
(c) are easy to produce
(d) do not produce noise during the operation
Ans.(b)

Q10. Which of the following instrument is used to measure the strength of winds—
(a) Tachometer
(b) Barometer
(c) Anemometer
(d) Rectifier
Ans.(c)

Q11. An object is placed between two parallel mirrors. The number of images formed is—
(a) 6
(b) 8
(c) 9
(d) Infinity
Ans.(d)

Q12. Acceleration due to gravity(g) is independent of—
(a) mass of the body
(b) size
(c) shape
(d) all of the above
Ans.(d)

Q13. The frequency of sound waves can be expressed in—
(a) s-1 
(b) Hz
(c) Cycles/second
(d) All of the above
Ans.(d)

Q14. When a ray or light enters a glass slab from air
(a) Its wavelength increase
(b) Its wavelength decrease
(c) Its frequency increase
(d) Both are increases
Ans.(b)

Q15. Ultrasonic waves can be detected by—
(a) Quinck’s tube
(b) Kundt’s tube 
(c) Hebb’s method
(d) Telephone
Ans.(b)

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