Expected Questions On Elements

[sg_popup id=”1345″ event=”inherit”][/sg_popup]Expected Questions On Elements

The scientist who discovered and isolated the chlorine gas
Ans : Carl Scheele
The scientist who recognized chlorine as an element
Ans : Humphry Davy
The second element having highest reactivity
Ans : Chlorine
The colour of Chlorine gas
Ans : Pale yellow green

The organic compound which contains chlorine
Ans : DDT, BHC, Chloroform, Freon
Chloroform was discovered by
Ans : James Young Simpson
The poisonous substance produced when the chlorine is exposed
Ans : Phosgene
The gas which was used as chemical weapon in the First World War
Ans : Phosgene
The element used to purify the water in swimming pool
Ans : Chlorine
The element used as an oxidising agent
Ans : Chlorine
The element used as a bleaching agent
Ans : Chlorine
The most abundant element present in sea water
Ans : Chlorine

The remedy gas which is used against the chlorine poisoning
Ans : Ammonia
The chlorine compound present in tear gas
Ans : Benzyl Chloride
The compound of chlorine used in the plastics
Ans : Polyvinyl chloride (PVC)
The solvent used as an anesthetic
Ans : Chloroform
The compound used as an antiseptic
Ans : Sodium Hypochlorite
The non metal present in liquid form in room temperature
Ans : Bromine
The bromine compound used in photographic films
Ans : Silver Bromide
Third lightest halogen
Ans : Bromine
Commonly used halogen
Ans : Iodine
The element abundant in sea weeds
Ans : Iodine
The element known as solid halogen
Ans : Iodine
The non-metal having highest density
Ans : Iodine
The most commonly used halogen available as tablet
Ans : Iodine
Iodine test is used to detect
Ans : Carbohydrate
The colour of carbohydrate in iodine
Ans : Dark Blue
The element that sublimes (solid into vapour) on heating
Ans : Iodine
The substance contains in the capsule which is given to the people in the nuclear disaster affected area
Ans : Potassium Iodide
The substances used for artificial raining
Ans : Silver Iodide and Dry ice (Solid CO2)
The rarest element in Earth
Ans : Astatine
The heaviest known halogen
Ans : Astatine
The element known as synthetic halogen
Ans : Astatine
The rarest element in Earth
Ans : Astatine
The heaviest known halogen
Ans : Astatine
The element known as synthetic halogen
Ans : Astatine
Noble gases are also called as
Ans : Inert gases
Noble gases do not enter Into chemical reactions
Noble gases were discovered by
Ans : William Ramsay
Group 18 is also known as
Ans : Zero group elements

Helium (He)
Neon (Ne)
Argon (Ar)
Krypton (Kr)
Xenon (Xe)
Radon (Rn)
Valency of noble gases is

The largest gaseous atom
Ans : Radon
The heaviest gaseous atom
Ans : Radon
The only radio active gaseous element
Ans : Radon
The element extracted from radioactive disintegration of radium
Ans : Radon
Argon was discovered by
Ans : Lord Rayleigh and William Ramsay
Lord Rayleigh and William Ramsay got Nobel Prize for the discovery of Argon in
Ans : 1904
The most abundant inert gaseous element present in the atmosphere
Ans : Argon
The gas filled in electric bulbs
Ans : Argon

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