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Hydrogen chloride gas and ammonia can be used to demonstrate the fountain experiment because they are
A radioactive element of mass 1g has half-life of 2 minutes, what fraction of the substance would have disintegrated after 10 minutes?
Hydrochloric acid is not suitable in the preparation of ethanoic acid because it
After breathing in a test tube that contains acidified K\(_2\)Cr\(_2\)O\(_7\), a man noticed the change in the colour of K\(_2\)Cr\(_2\)O\(_7\) from orange to green. This suggests the presence of
What accounts for the low melting and boiling points of covalent molecules?
The general molecular formula C\(_n\)H\(_{2n-2}\) represents that of an
Benzene formed nitrobenzene at temperature of 60\(^0\)C when it reacts with mixture of concentrated trioxonitrate(V) acid and concentrated
Alkylation of benzene is catalyzed by
C\(_x\)H\(_y\)O + 5O\(_2\) → 4CO\(_2\) + 4H\(_2\)O
C\(_x\)H\(_y\)O in the equation is
The reaction between alkanoic acids and alkanols in the presence of an acid catalyst is known as
The amount of Faraday required to discharge 4.5 moles of Al\(^{3+}\) is
An organic compound with general formula RCOR' is an
The hybridization scheme in ethyne is
C\(_2\)H\(_{4(g)}\) + 3O\(_{2(g)}\) → 2CO\(_{2(g)}\) + 2H\(_2\)O\(_{(g)}\)
The above equation represents the combustion of ethene.If 10cm\(^3\) of ethene is burnt in 50cm\(^3\) of oxygen, what would be the volume of oxygen that would remain at the end of the reaction?
In a chemical reaction, surface area of reactants can affect
An oxide of nitrogen that can rekindle a glowing splint is
Which of the following represents an order of increasing reactivity?
The main constituent of water-glass is
The term strong and weak acids is used to indicate the
The reaction of hydrogen and chlorine to produce hydrogen chloride gas is explosive in