Deficiency of fluoride leads to which one of the following health problems?
Tooth caries
Which one of the following acids is also known as Vitamin C?
How many moles of CO can be obtained by reacting 2.0 mole of CH 4, with 2.0 mole of O 2, according to the equation given below?
\(C{H_4}\left( g \right) + \frac{1}{2}{O_2} \to CO + 2{H_2}\)
In the reaction between hydrogen sulphate ion and water
\({\rm{HSO}}_4^ - {\rm{\;}} + {\rm{\;}}{{\rm{H}}_2}0 \to {\rm{\;}} - {\rm{\gg \;}}{{\rm{H}}_3}{0^ + } + {\rm{SO}}_4^{2 - }\)
the water acts as:The molecular mass of sulphuric acid is 98. If 49 g of the acid is dissolved in water to make one litre of solution, what will be the strength of the acid?
In paper manufacturing, degumming of the raw material is done using
Which one of the following is an amphoteric oxide?
Vinegar is
Dolomite powder is applied in some agricultural lands. The purpose of applying it is to
Which one of the following oxides shows both acidic and basic behaviour?
Stinging hair of nettle leaves inject fluid in the human body causing burning pain. The fluid is
What is the pH of a solution prepared by dissolving $0.0025$ moles of $HNO_3$ in $250\,mL$ of water?
Which species acts as acid like behaviour in the following reaction?
\(HPO_4^{2-}+NH_4^{1+}\rightarrow H_2PO_4^{1-}+NH_3\)
Aqueous solution of CH 3COONa is:
pH of a neutral solution is ___________.
A stain of curry on a white cloth become reddish brown when soap is used because the soap is: