Categories
Assistant General Science

Chemistry – 09

ഹൈഡ്രജൻ, ഓക്സിജൻ, നൈട്രജൻ, തുടങ്ങിയ വാതകങ്ങളുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ.

  • Hydrogen was discovered by

Henry Cavendish

 

  • Meaning of the word Hydrogen

Water producer

 

  • Based on atomic mass which is the smallest atom

Hydrogen

 

  • Which is considered as the simplest atom\lightest gas

Hydrogen

 

  • Largest atom

Francium

 

  • Densest atom

Radon

 

  • Element which produces the largest number of compounds

Hydrogen

 

  • Non metal element which showing metallic characters

Hydrogen

 

  • Element which is not included in any group

Hydrogen

 

  • Element which is present in all acids

Hydrogen

 

  • Element which has the second lowest boiling point and melting point among all substances

Hydrogen

 

  • Gas which burns blue in color

Hydrogen

 

  • Element that does not have neutrons in atom

Hydrogen

 

  • Gas which is used for making Vanaspati Ghee

Hydrogen

 

  • Hydrogen is not using for domestic purpose because of its

Explosive nature

 

  • Fuel used in rockets

Liquid Hydrogen

 

  • Which is known as the fuel of future

Hydrogen

 

  • Fuel which doesn’t cause any pollution

Hydrogen

 

  • Isotopes of Hydrogen are

Protium, Deuterium, Tritium

 

  • Which isotope of Hydrogen is considered as the ordinary Hydrogen

Protium

 

  • Which is called as heavy Hydrogen

Deuterium

 

  • Chemical name of Heavy water

Deuterium Oxide

 

  • Chemical name of Super heavy water

Tritium Oxide

 

  • Most abundant isotope of Hydrogen

Protium

 

  • Simplest radioactive element\Radio active isotope of Hydrogen

Tritium

 

  • Isotopes which are using for the manufacturing of Hydrogen bomb

Deuterium, Tritium

 

  • Most abundant compound present in animals and human body

Water (About 65-70% of body mass)

 

  • The scientist who proved that water is a compound of Hydrogen and Oxygen

Henry Cavendish

 

  • The matter which can exist in Solid, Liquid and gaseous forms

Water

 

  • High boiling point of water is due to

Hydrogen bonding

 

  • Which is known as the universal solvent

Water

 

  • Chemical name of water

Dihydrogen monoxide (H2O)

 

  • Purest water in nature

Rainwater

 

  • Temporary hardness of water is due to the presence of

Bicarbonates of Calcium and Magnesium

 

  • Temporary hardness of water can be removed by

Repeated boiling or adding lime

 

  • Permanent hardness of water can be removed by

Distillation or by adding Sodium Carbonate (Washing soda)

 

  • Gas which has the smell of rotten eggs

Hydrogen Sulphide

 

  • Compound of Hydrogen using as the bleaching agent

Hydrogen peroxide (H2O2)

 

  • Compound of Hydrogen which has the structure of an open book

Hydrogen peroxide

 

  • Gas which helps substances to burn but doesn’t burn itself

Oxygen

 

  • Number of atoms present in Oxygen molecule

2

 

  • Number of atoms present in Ozone molecule

3

 

  • Hydrogen and Oxygen are named by

Lavoisier

 

  • Gas which is colorless, tasteless and odorless

Oxygen

 

  • Color of Oxygen and Ozone in solid and liquid form

Light Blue

 

  • Atmospheric layer in which Ozone is present

Stratosphere

 

  • Substance which depletes the Ozone layer

Chlorofluoro Carbon (CFC)

 

  • Industrial name of CFC

Freon

 

  • Element in CFC which destroys ozone

Chlorine

 

  • Gases used in aquatic lungs of sea divers for respiration

Mixture of Helium and Oxygen

 

  • Nitrogen was discovered by

Daniel Rutherford

 

  • Main content of protein

Nitrogen

 

  • Examples of Nitrogen-fixing bacterias

Rhizobium, Acetobacter, Clostridium

 

  • Nitrogen compound which is used in photographic plates

Silver Nitrate

 

  • Most nitrogenized fertilizer

Urea

 

  • Gas formed in the atmosphere during lightning

Nitrogen dioxide

 

  • RDX stands for

Research Department Explosive

 

  • Explosive known as cyclonite

RDX

 

  • Explosive known as trotyl

TNT


(To be Continued…)