Worksheetsreactions
Total questions: 12
Worksheet time: 8mins
The most and least reactive electrophiles respectively in a SN1 reaction are
I and II respectively
II and III respectively
I and III respectively
III and IV respectively
Electrolysis of water is a decomposition reaction. The molar ratio of hydrogen and oxygen gases liberated during electrolysis of water is:
1:1
2:1
1:2
4:1
A chemical equation should be balanced to :
show conservation of energy
show conservation of mass
to make equation attractive
All of the above
Silver article turns black when kept in open for a few days due to formation of
H2S
AgS
AgSO4
Ag2S
In a chemical reaction between sulphuric acid and barium chloride solution, the white precipitate formed is ----
HCl
Chlorine
Sulphur
Barium sulphate
A powdered salt X was heated in a dry test tube and evolution of brown fumes of nitrogen dioxide and a yellow residue of lead oxide is formed. The salt X is :
Magnesium Carbonate
Lead nitrate
Ammonium Sulphate
Calcium carbonate
A powdered salt X was heated in a dry test tube and evolution of brown fumes of nitrogen dioxide and a yellow residue of lead oxide is formed. The salt X is :
Magnesium Carbonate
Lead nitrate
Ammonium Sulphate
Calcium carbonate
A powdered salt X was heated in a dry test tube and evolution of brown fumes of nitrogen dioxide and a yellow residue of lead oxide is formed. The salt X is :
Magnesium Carbonate
Lead nitrate
Ammonium Sulphate
Calcium carbonate
The following is an example of :
4NH3 + 5O2 -----> 4NO + 6H2O
(i) displacement reaction
(ii) combustion reaction
(iii) redox reaction
(iv) neutralization reaction
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(iii) and (iv)
Sodium reacts with chlorine to form sodium chloride, which is also called table salt. Which option gives the reactants & products of the reaction?
Reactants=Sodium, Product= chlorine
Reactants=Sodium & table salt, Product= chlorine
Reactants=Table salt, Product= sodium & chlorine
Reactants=Sodium & chlorine, Product=sodium chloride
