(a) Oscillator
(b) Amplifier
(c) Rectifier
(d) None of these
Q2. Who defined the law of gravitation?
(a) Newton
(b) Archimedes
(c) Galileo
(d) Faraday
Q3. ‘Therm’ is the unit of
(a) power
(b) heat
(c) light
(d) distance
Q4. Newton’s first law of motion gives the concept of
(a) energy
(b) work
(c) momentum
(d) inertia
Q5. A kilowatt-hour is unit of
(a) Energy
(b) Power
(c) Electric charge
(d) Electric current
Q6. Who was the father of Biology?
(a) Aristotle
(b) Antoine Lavoisier
(c) Eratosthenes
(d) none of these
Q7. The sound produced by a bat is–
(a) audible
(b) subsonic
(c) infrasonic
(d) ultrasonic
Q8. Lambert’s law is related to
(a) Reflection
(b) Refraction
(c) Interference
(d) Illumination
Q9. The surface tension of water on adding detergent to it
(a) increases
(b) decreases
(c) no change
(d) becomes zero
Q10. Decibel is a term connected with:
(a) air
(b) water
(c) sound
(d) soil
Q11. Tear gas used by the police to disperse the mob contains
(a) carbon dioxide
(b) chlorine
(c) ammonia
(d) hydrogen sulphide
Q12. The metal whose electrical conductivity is more, is
(a) copper
(b) aluminum
(c) silver
(d) lead
Q13. The head mirror used by ENT doctors is
(a) Concave
(b) Convex
(c) Plane
(d) Plano-convex
Q14. Citric acid is present in free form in
(a) Tamarind
(b) Milk
(c) Apple
(d) Lemon
Q15. Hydraulic machines work under the Principle of:
(a) Newton’s Law
(b) Joules Law
(c) Pascal’s Law
(d) Floatation Law
CRACK SSC CGL 2017
