General Science Questions and Answers
General Knowledge General Science Questions with Answers enhance scientific understanding in physics, chemistry, and biology. Useful for SSC, RRB, and NDA exams, these questions strengthen your general science foundation
General Science
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124 questions
71. Which of the following best explains the phenomenon ‘Simple Harmonic Motion’?
- Cylinder
- Disc
- Pendulum
- None of these
72. Jet engines are
- rotary engines
- turbine engines
- external combustion engines
- reaction engines
73. In an engine run on diesel, ignition is caused through
- friction
- automatic starter
- spark plug
- compression
74. In an electronic watch, the component corresponding to the pendulum of a pendulum clock is
- Transistor
- Balance Wheel
- Crystal Oscillator
- Diode
75. The hydraulic brakes used in automobiles is a direct application of ?
- Archimedes’ Principle
- Toricellian law
- Bernoulli’s theorem
- Pascal’s law
76. Which of the following statements is correct?
- Dynamo converts electrical energy into heat energy and electric motor converts mechanical energy into electrical energy.
- Dynamo converts mechanical energy into electrical energy and electric motor converts electrical energy into mechanical energy.
- Both dynamo and electric motor convert electrical energy into mechanical energy.
- Both dynamo and electric motor convert mechanical energy into electrical energy.
77. An electron microscope gives higher magnification than an optical microscope because
- it uses more powerful lenses.
- the velocity of electrons is smaller than that of visible light.
- the electrons have more energy than the light particles.
- the wavelength of electrons is smaller as compared to the wavelength of visible light.
78. The conversion of electrical energy into chemical energy is observed in ?
- fan
- storage battery
- heater
- incandescent bulb
80. The tape of a tape recorder is coated with
- Zinc oxide
- Copper sulphate
- Mica
- Ferromagnetic powder