QUESTION, WHICH ASKED IN MANY COMPETITIVE EXAM

       

           SI unit of force is Newton

·      SI unit of pressure is Pascal

·       Discovery of  insulin is done by bantic

·      Telescope is invented by Galileo

·        Positron is discover by Anderson

·         The formula of laughing gas is N2O

·        Gama ray have no charge

·        Alpha ray have positive charge

·       Beta ray have negative charge

·         Solid CO2 is called dry ice

·        The density of ice is less then water. So ice is float on       water

·      Chromium and arsenic cause cancer

·      At first time word acid rain is used by robot Augustus

·         Jupiter have 64 satellite

·       SI unit of length is meter

·       SI unit of mass is kg

·      SI unit of time is second

·      SI unit of temperature is Kelvin

·      SI unit of current is ampere

·      SI unit of intensity of light is candela

·      SI unit of quantities of substance is Mole

·      The instrument measure the intensity of sound is audiometer

·      The instrument measure the air pressure is barometer

·      1 mile is equal to 1.6 kilometer

·      Light year is the unit of distance

·      The purity of milk is measured by lactometer

·      SI unit of work is Joule

·      During cooking food chances to destroy vitamin c

·      The chemical formula of caustic soda is NaOH

·      Neptune looks green due to presence of methane gas

·      Alpha particle is the nucleus of helium atom

·      First Indian who got noble prize in physics is c v raman

·      First man who got novel prize in the field of medical science belong to Indian origin was hargovind khurahana

·      Copper is mixed with the ornament of gold

·         The density of water is maximum at 40C

·      The process of mixing liquid into liquid is called Emulsion

·      Magnetism of a magnet is loss when we beat the magnet with hammer

·      Heat also destroy the magnetism

·      Hans Christian orested first who prove that electric current can produce magnetic field

·      When we moving the magnet in coil produce electric current

·      The mixture of Nickel and chromium is called nichrome

·      The mixture of zinc lead and tin is used in making the fuse of electric wire

·      The frequency of Indian ac supply is 50 Hz and voltage is 220V

     Diamond is the hardest substance found on the earth

·      Diamond is bad conductor of electricity but good conductor of heat

·      The upper layer of egg is made up of calcium carbonate

·      The ore of iron is hematite

·      The ore of aluminum is Bauxite

·      The ore of lead is galena

·      The ore of magnesium is magnetite

·      Bronze is the mixture of copper and tin

·      Aluminum have light weight and soft metal

·      Magnesium is used is bodies of aeroplane

·      Lemon, orange and grapes contain citric acid

·      Vinegar contain acetic acid 

·      Milk contain lactic acid

·      Stomach contain HCl

·      Tomato contain oxalic acid

·         Chemical formula washing soda is Na2CO3.10H2O

·         Chemical formula of baking soda is NaHCO3

·         Chemical formula of bleaching powder is CaOCl2

·         Chemical formula of plaster of pairs is CaSO4.H2O

·         Chemical formula of gypsum is CaSO4.2H2O

·      Formula of quick lime is CaO

·      Hydrogen is smallest and cesium is largest element

·      Density of lithium is high

·      The melting point of tungsten high

·      Fluorine is most electronegative

·      Sun is looking rising in the east due to motion of earth west to east

·      Moon revolve around the sun in 27.3 days

·      Mercury is the nearest planet from the moon

·      Mercury is called the star of day and evening

·      On 21 June in southern hemisphere the day is largest

·      Jupiter have largest volume and highest weight

·      Uranus is the first planet seen by telescope

·      On pole 6 months day and 6 months are night

·      Ozone lie in stratosphere

·      Mercury is used in barometer

·      Liquid nitrogen used to live awake the tissue and cell.

·      Nitrogen is neutral at room temperature

·         Cfcs neutral at room temperature but in stratosphere it react with the ozone

·         CO2, NO2, Cfcs and methane are green house gases

·      Methyl isocyanides gas came out in Bhopal gas miscare

·      Urea is first synthesis carbonic compound

·      First atomic reactor is made by farmi

·      Fossil is dated by carbon dating and earth is dated by uranium dating

·      Mercury is also called quick  silver

·         CCl3NO2 are the formula of tear gas

·      Chloroform is used in anesthesia

Silver became black due to hydrogen sulphide  

·      J.J Thomson discover the electron

·      Rutherford found that the weight of the atom lie in the center

·      Same atomic number but different atomic mass is called isotopes

·      Same atomic mass but different atomic number is called isobar

·      Narora atomic research center situated in bulandshear in Up

·      cavendish discover hydrogen

·      Stainless steal is made up of iron chromium nickel carbon

·      Mercury is liquid at room temperature

·      The first element discover by man is copper

·      Osmium has highest weight element among the periodic table

·      Iodine is non metal but it has shining

·      Graphite is the good conductor of electricity

·      Xenon is also known as stranger gas

·      The AgI is used in artificial rain

·      Boyel law state that pressure is inversely proportional to volume

·      Charles law state that volume is directly proportional to temperature

·      Atomic number is equal to number of proton

·      In modern periodic table there are 7 period and 18 group

·      Alpha century are the nearest star after sun

·      Nil arm  stron was the first man lie on moon

·      Chlorine is discover by sillae                  

·      The atom bomb used in Nagasaki there plutonium element was used

·      The safety  bag used in car the is called sodium angite

·      Nitric acid is found in alum

·      Protein is digest in stomach

·      Chromium is used in steel to make it strong

·      World environment day is celebrated on 5 June

·      SONAR is used is find the object under the sea

·      Generally 50 to 60 decibel sound is easy to hear

·      Anemometer is used in measuring the speed of wind

·      Pyrometer is used in measuring the temperature

·      Hygrometer is used to measure the humidity of atmosphere

·      Odometer is used in measuring the total distance travel by vachele

                 

·      Stethoscope is use to measuring the heartbeat

·      Caratometer is used to measuring the purity of gold

·      Luxmeter is used to measure the speed of light

·      Fathometer is used to measure the depth of sea

·      Altimeter is used to measure the distance

·      Hydrogen is discover by Cavendish

·      Starch is digested by  found in mouth

·      Amylase digest the carbohydrate

·      The study of universe is called cosmology

·      Copernicus said that the sun is the center of universe

·      Keplar said that sun is the center of solar system

·      The formation of earth is explain by big bang theory

·      Largest planet is Jupiter

·      Smallest planet is mercury

·      Ganymede is the largest satellite of the universe     

·      Demos is the smallest satellite of the universe

·      Venus is the brightest planet

·      Syrus is brightest star found in universe

·      Mars is seen in night

·      Nearest planet to earth is Venus

Earth have 5th position is the shape

·      The escape velocity is 2.37km/s

most abundant metal is aluminum

·      Scientific name of onion is alious sypus

·      Scientific name of apple is pyres milieus

·         D2O, graphite beryllium is used as moderator in atomic reactor

·      14 November is celebrated as diabetes day

·      Red revolution for tomato, meat production

·      Pink revolution for fish production

·      Brown revolution for fertilizer production

·      Zinc, copper and nickel used for production of German silver

·      Latex is produce from rubber

·      Transformer is measured in KVA

·      Trachoma is the disease of eye

·      Hydrometer is used to measure the charge of battery

·      Pace maker is related to heart

·      RNA is used in synthesis of protein

·      Phenomenon of radioactivity discover by Becquerel

·      The lightest radioactive element is Tritium

·      Sulphuric acid is known is king of chemicals

·      The ph value of water 7

·      The chemical formula of quick lime is cao

·      The formic acid is found in the string of ant’s

·      The number of lone pair in nitrogen is 2

·      Siderite is the ore of iron

·      The process of heating rubber with sulphur to increase its quality is called vulcanization

·      Ethylene is used in ripening of food

·      The crookes glass is used in sun glass

·         Pasteurization is a process in which milk is heated at 630C for 30 min

·      Quality of petrol is express in octane number

·      Butane is the main constituent of LPG

·      In match stick the red phosphorus is used

·         Ozone is represented is O3

·      In deep see diving , driver use the mixture of gases with oxygen are Helium and nitrogen

·      Magnesium is exerted from sea water

·      Bromine is a non metal found in liquid state

·      Dry powder fire extinguisher contain sand and sodium bicarbonate

·      Lignite is known as brown coal

·      Calcium magnesium silicate is called Asbestos

·      Aluminum is a metal which contain oxide is outer surface

·      Deficiency of vitamin C cause blooding from teeth

·      The largest organ of human body is liver

·      Function of transformer is to step up and step down

·      Methane is called marsh gas

·      Chemical formula of carbon monoxide is CO

·      pH of blood is 7.4

·      limonite is ore  of iron