Advertisements
Advertisements
प्रश्न
Assertion: \[\ce{HNO3}\] makes iron passive.
Reason: \[\ce{HNO3}\] forms a protective layer of ferric nitrate on the surface of iron.
पर्याय
Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.
Assertion is correct, but reason is wrong statement.
Assertion is wrong but reason is correct statement.
Both assertion and reason are wrong statements.
Advertisements
उत्तर
Assertion is correct, but reason is wrong statement.
Explanation:
Passivity is attained by formation of a thin film of oxide on iron.
APPEARS IN
संबंधित प्रश्न
Write balanced chemical equations for action of potassium permanganate on: Hydrogen
Pb(NO3)2 on heating gives a brown gas which undergoes dimerisation on cooling? Identify the gas
Bond angle in `PH_(4)^(+)` is higher than that in PH3. Why?
Why does the reactivity of nitrogen differ from phosphorus?
Which of the following is a basic oxide?
(A) SiO2
(B) P4O10
(C) MgO
(D) Al2O3
Explain why Mn2+ ion is more stable than Mn3+? (Given : Mn→ Z=25)
Write balanced chemical equations for action of potassium permanganate on Warm conc. sulphuric acid
Account for the following :
Bond angle in NH+4NH4+ is higher than NH3.
The statement true for \[\ce{N^-_3}\] is ____________.
Which of the following statements is not correct for nitrogen?
Nitrogen is relatively inactive element because ____________.
Among the 15th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to:
Which of the following oxides is neutral?
Which oxide of nitrogen is obtained on heating ammonium nitrate at 250°C?
Which of the following can be used as anesthesia?
On heating lead (II) nitrate gives a brown gas “A”. The gas “A” on cooling changes to colourless solid “B”. Solid “B” on heating with NO changes to a blue solid ‘C’. Identify ‘A’, ‘B’ and ‘C’ and also write reactions involved and draw the structures of ‘B’ and ‘C’.
