25 questions
A gas which produce acidified potassium dichromate to green
Nitrogen dioxide
Chlorine
Sulphur dioxide
Hydrogen Sulphide
Colourless gas which has sharp pungeant smell and gives dense white fumes with HCl
Nitrogen dioxide
Sulphur dioxide
Hydrogen sulphide
Ammonia
Colourless gas which turns lead acetate paper black
Oxygen
Hydrogen
Carbon dioxide
Hydrogen Sulphide
When silver nitrate react with dil.HCl and forms
White ppt of AgCl
Green ppt of AgCl
Blue ppt of AgCl
Orange ppt of AgCl
The confirmatory test of Nitrogen dioxide is
Turns cobalt chloride paper pink
Turns nessler reagent brown
Turns red litmus blue
Turns acidified ferrous sulphate soln brown
Carbon dioxide and sulphur dioxide gas can be distinguished by using
moist blue litmus paper
Lime water
Acidified potassium dichromate paper
None of the above
Which one of the following will not produce acid when made to react with water
Carbon monoxide
Carbon dioxide
Nitrogen dioxide
Sulphur trioxide
When a freshly prepared solution of ferrous sulphate is added to the salt solution and a conc sulphuric acid is gently poured from the side of the test tube,a brown ring is formed which indicates the presence of
sulphite ion
sulphate ion
carbonate ion
nitrate ion
Nitrogen dioxide is a :
greenish yellow coloured gas
colourless
reddish brown coloured gas
none of these
The metal oxide which can react with acid as well as alkali is
silver oxide
copper(II) oxide
Aluminium oxide
calcium oxide
The ppt of which of the following compounds is soluble in excess of ammonia solution
iron(II) chloride
magnesium chloride
Copper(II) sulphate
lead nitrate
Flame test is carried out on a sample, what color would be seen in the flame, if the sample is Potassium nitrate?
blue-green
red
lilac
orange
Few drops of silver nitrate solution are added to a solution W, a white precipitate forms, this confirms the presence of
nitrate ions
sulfate ions
chloride ions
bromide ions
Flame test is carried out on a sample, what color would be seen in the flame, if the sample is copper sulfate?
blue green
red
orange
lilac
few drops of HCl are added to a solution X, bubbles of gas that turns lime water forms, this confirms the presence of
sulfate ions
carbonate ions
sulfite ions
nitrate ions
A gas that turns paper soaked with acidified potassium manganate (VII) paper colorless
chlorine
ammonia
oxygen
sulfur dioxide
Hydrogen sulphide and sulphur dioxide gas can be distinguished by using
moist blue litmus paper
Lime water
Acidified ferrous sulphate solution
None of the above
Colour of the residue obtained on heating ammonium dichromate
Blue
Orange
Green
White
What will you observe when chlorine is passed over red litmus paper?
Red litmus turns blue
Red litmus gets bleached
Red litmus remains red
Red litmus turns blue and gets bleached
What will you observe when chlorine gas is passed over a glass rod dipped in ammonia solution?
Reddish brown fumes
Greenish yellow fumes
Dense white fumes
No visible change
A gas which turns potassium iodide solution brown is
Hydrogen sulphide
Hydrogen chloride
Ammonia
Nitrogen dioxide
Nessler's reagent is used for the confirmation of
Aluminium
Ammonium
Zinc
Lead
A gas neutral towards litmus but rekindles the glowing splinter.
Nitrogen.
Hydrogen.
Oxygen.
Chlorine
Metal gives Golden yellow flame test
Ca
Na
K
Cu
Chemical substance gives violet vapors on heating
Ammonium dichromate.
Zinc carbonate
Iodine
Washing soda