DEB STUDY - The Competitive Exam Guide

PHYSICS Q&A For All Competitive Exam ✔️Q.1.  Radian is used to measure___?  👉Angle ✔️Q.2.  On which principle , transformer works?  👉Mutual Induction ✔️Q.3.  Potential energy of your body is minimum when you _______.  👉Lie down on ground ✔️Q.4.  The velocity of sound in air___?  👉332m/sec

PHYSICS Q&A For All Competitive Exam ✔️Q. 1.  The image formed by convex lens in a simple microscope is__.  👉Virtual & Erect ✔️Q.2.  What is the unit of magnetic flux?  👉Maxwell ✔️Q.3.  Coolis tube is used to produce___?  👉X-Rays ✔️Q.4.  Sudden fall in barometer is indication of___?  👉Storm

PHYSICS Q&A For All Competitive Exam ✔️Q.1.  Who had showed that the electric and magnetic waves are equal in vacuum?  👉James Clerk Maxwell ✔️Q.2.  When a red glass is heated in dark room it will seem___.  👉Green ✔️Q.3.  The friction force exerted by fluids is called ___.  👉Drag ✔️Q.4.  Which is used in designing ships and submarines?  👉Archimedes Principle

PHYSICS Q&A For All Competitive Exam ✔️Q.1.  The value of which quantity remains same in all system of units?  👉Specific Gravity ✔️Q.2.  Distance of stars are measured in___?  👉Light Years ✔️Q.3.  Nature of sound wave is ____?  👉Longitudinal ✔️Q.4.  What is the SI unit of luminous intensity?  👉Candela

PHYSICS Q&A For All Competitive Exam ✔️Q.1.  The unidirectional property of a pn-junction is useful for its use as which thing? 👉Rectifier ✔️Q.2.  The strongest force in the nature is ____?  👉Nuclear Force ✔️Q.3.  Which is the only natural magnet?  👉Magnetite ✔️Q.4.  We cannot see during a fog, because of ____.  👉Scattering of light

PHYSICS Q&A For All Competitive Exam ✔️Q.1.  What is the unit of specific resistance?  👉Ohm-metre ✔️Q.2.  Camberts Law is related to__?  👉Interference ✔️Q.3.  Which waves are used in sonography?  👉Ultrasonic waves ✔️Q.4.  Which instrument is used to measure the power of electric circuit ?  👉Wattmeter

PHYSICS Q&A For All Competitive Exam ✔️Q.1.  What is the unit of Radioactivity?  👉Curie ✔️Q.2.  What is the wavelength of visible spectrum?  👉390-700 nanometres ✔️Q.3.  One astronomical unit is the average distance between___?  👉Earth & Sun ✔️Q.4.  Number of basic S.I. units is ___.  👉Seven (7)

PHYSICS Q&A For All Competitive Exam ✔️Q.1. What do we use as a moderator in nuclear reactor?  👉Graphite ✔️Q.2.  The mirror used in motor vehicles near the driver's seat is a__?  👉Convex Mirror ✔️Q.3.  Electron microscope was invented by__?  👉Robert Koch ✔️Q.4.  The hydraulic brake used in automobiles is a direct application of__?  👉Pascal's Law

  P HYSICS Q&A For All Competitive Exam ✔️Q.1.  What is the name of the scientist who stated that matter can be converted into energy? 👉Einstein  ✔️Q.2.  The size of atomic nucleus is of the order of___?  👉10^-14 m  ✔️Q.3.  A temperature at which both the Fahrenheit and the centigrade scales have the same value?  👉-40° ✔️ Q.4.  In the visible spectrum which colour has the shortest wavelength?  👉Violet

PHYSICS Q&A For All Competitive Exam ✔️Q.1  Einstein got noble prize for____?  👉Photoelectric Effect ✔️Q2.  The nucleus of an atom consists of__?  👉Neutrons and protons ✔️Q3.  What is the measuring unit of length of light waves?  👉Angstrom ✔️Q4.  How much is one barrel of oil approximately equal to?  👉159 litres

  Chemistry Q&A For All Competitive Exam ✱ ✱ Q 1.  Lead pencil contains _____ .  ⇒  Graphite ✱ ✱ Q 2.  Ozone is _______ .  ⇒  Diamagnetic ✱ ✱ Q 3.  The important metal used with iron to produce stainless steel is _____ .  ⇒  Chromium ✱ ✱ Q 4.  Which gas is responsible for the swelling of bread?  ⇒  Carbon dioxide

  Chemistry Q&A For All Competitive Exam ✱ ✱ Q 1.  Purest form of Iron is?  ⇒ Wrought Iron ✱ ✱ Q 2.  Radium is extracted from ______ .  ⇒ Pitchblende ✱ ✱ Q 3.  Which agent is as ‘seed’ in artificial rain?  ⇒ Silver Iodide ✱ ✱ Q 4.  Oxides of metals are ______ .  ⇒ Alkaline

  Chemistry Q&A For All Competitive Exam ✱ ✱ Q 1.  Compounds responsible for temporary hardness of water?  ⇒ Bicarbonates of Calcium and Magnesium ✱ ✱ Q 2.  Compounds responsible for permanent hardness of water?  ⇒ Sulphates and Chlorides of Calcium and Magnesium ✱ ✱ Q 3.  Gases used for ripening raw fruits?  ⇒ Ethylene & Acetylene ✱ ✱ Q 4.  Substance used in Cancer treatment?  ⇒ Cobalt –  60

Chemistry Q&A For All Competitive Exam   ✱ ✱ Q 1.  Carbon occur in the nature in the purest form as?  ⇒ Diamond ✱ ✱ Q 2.  Oxidation is defined as -----  ⇒ Loss of electrons ✱ ✱ Q 3.  In nuclear reactor, chain reaction is controlled by using _____ .  ⇒ Cadmium rod ✱ ✱ Q 4.  The radioactive element most commonly detected in humans is _____ .  ⇒ Potassium – 40

Chemistry Q&A For All Competitive Exam   ✱ ✱ Q 1.  The most abundant element in the earth's crust is ?  ⇒ Oxygen ✱ ✱ Q 2.  The lustre of a metal is due to _______ .  ⇒ Presence of free electrons ✱ ✱ Q 3.  Which gas is used in fire extinguisher?  ⇒ Carbon dioxide ✱ ✱ Q 4.  Which gas is used in cigarette lighters?  ⇒ Butane

Chemistry Q&A For All Competitive Exam   ✱ ✱ Q 1.  ______ (metal) is liquid at room temperature.  ⇒ Gallium ✱ ✱ Q 2.  ______ is used to prepare fire proof and water proof clothes.  ⇒ Calcium hydride ✱ ✱ Q 3.  Galvanised iron is coated with?  ⇒ Zinc ✱ ✱ Q 4.  Chemical name of Chromic Acid is?  ⇒ Chromium trioxide

  Chemistry Q&A For All Competitive Exam ✱ ✱ Q1.  Main ore of Mercury is?  ⇒ Cinnabar ✱ ✱ Q2.  Egg shell is made up of?  ⇒ Calcium Carbonate ✱ ✱ Q3.  Common preservative in food processing industry is?  ⇒ Benzoic Acid ✱ ✱ Q4.  First organic compound synthesized in laboratory & by whom?  ⇒ Urea by Friedrich Wöhler

Chemistry Q&A For All Competitive Exam ✱ ✱ Q1. Tube light is filled with?  ⇒  Mercury Vapour & Argon ✱ ✱ Q 2.  Other name of “FOOL’S GOLD” is?  ⇒  Iron Pyrite ✱ ✱ Q 3.  Non-stick coating in utensils is of?  ⇒  TEFLON ✱ ✱ Q4 .  ______ is known as Artificial Silk.  ⇒  Reyon

Chemistry Q&A For All Competitive Exam ✱ ✱ Q1. Most abundant metal in earth’s crust is ______ .  ⇒  Aluminium ✱ ✱ Q2.  Balloons are filled with _____ .  ⇒  Helium ✱ ✱ Q3.  The element common to all acids is _____ .  ⇒  Hydrogen ✱ ✱ Q4.  Which gas is used in filling electric bulbs ______ ?  ⇒  Argon

Chemistry Q&A For All Competitive Exam ✱ ✱ Q1.  Platinum is also called _____ .  ⇒  White Gold ✱ ✱ Q2. Which material is used in making of safety matches?  ⇒  Red Phosphorous ✱ ✱ Q3.  Nail polish remover contains?  ⇒  Acetone ✱ ✱ Q4.  Paper is chemically _______ .  ⇒  Cellulose