GK : General Science

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 Instruments and Use

Instrument	Uses
Ammeter	It measures strength of electric current (in amperes)
Audiometer	It measures intensity of sound
Barometer	It measures atmospheric pressure
Cardiogram	It traces movements of the heart, recorded on a cardiograph
Cresco graph	It measures the growth in plants
Cyclotron	A charged particle accelerator which can accelerate charged particles to high energies.
Dynamo	It converts mechanical energy into electrical energy
Electroscope	It detects presence of an electric charge
Endoscope	It examines internal parts of the body
Eudiometer	A glass tube for measuring volume changes in chen ical reactions between gases
Fathometer	It measures the depth of the ocean
Hygrometer	It measures humidity in air
Lactometer	It determines the purity of milk
Manometer	It measures the pressures of gases
Odometer	An instrument by which the distance covered by wheeled vehicles is measured
Rader	It is used for detecting the directing and range of an approaching plane by means of radio microwaves.
Seismograph	It measures the intensity of earthquake shocks
Sextant	This is used by navigators to find the latitude of a place by measuring the elevation above the horizon of the sun or another star
Spectrometer	It is an instrument for measuring the energy distribution of a particular type of radiation.
Tachometer	An instrument used in measuring speeds of aero planes and motor boats.
Thermometer	This instrument is used for the measurement of temperatures
Voltmeter	It measures the electric potential difference between two points.

Solar System

1. Coldest Planet – Pluto
2. Smallest Planet – Mercury
3. Biggest Planet – Jupiter
4. Brightest Planet – Venus
5. Farthest Planet (from the Sun) – Pluto
6. Nearest Planet ( to the Sun) – Mercury
7. Brightest Star –  Sirius A
8. Biggest Telescope –  Mt. Palomar (USA)
9. Man first landed on the surface of the moon on - 1969

 General Science 

1. Insulin is secreted by which organ - Pancreas
2. pure gold is measured in terms of -  24 carat