Nitrous Acid
Trending Questions
Q. The conjugate acid of NH−2 is:
- NH3
- NH2OH
- NH+4
- NH2−
Q.
Formic acid and carbonic acid are weak acids.
- True
- False
Q. Cupric chloride is used as a catalyst in which of the following processes?
- Haber’s process
- Contacts process
- Deacon’s process
- None of these
Q. The normality of 0.3 M phosphorous acid (H3PO3) is
(IIT-JEE, 1999)
(IIT-JEE, 1999)
- 0.1
- 0.3
- 0.6
- 0.9
Q. In the given anions, the strongest Bronsted base is:
Q. The Ostwald process is used in the preparation of:
- Nitric acid
- Nitrous acid
- Sulfuric acid
- Oleum
Q. Among the following oxides, the correct order of acidity is:
- > > >
- > > >
- < < <
- > > >
Q. The strength of the oxyacids decreases in the following order
Q. Pick the odd one out :
i) Inorganic acids : HCl, HNO3, H2SO4, HCOOH
ii) Basic Nature : Blood, Baking Soda, Vinegar, Household ammonia
i) Inorganic acids : HCl, HNO3, H2SO4, HCOOH
ii) Basic Nature : Blood, Baking Soda, Vinegar, Household ammonia
Q. Assertion :In water, orthoboric acid behaves as a weak mono basic acid. Reason: In water, orthoboric acid acts as a proton donor.
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
Q. Nitrite (NO−2) interferes in the ‘ring-test’ of nitrates (NO−3). Among the following reagent(s) that can be used for the removal of nitrite is/are:
I. NH4Cl
II. (NH2)2CS (thiourea)
III. NH2SO3H (sulphamic acid)
Correct choice is
I. NH4Cl
II. (NH2)2CS (thiourea)
III. NH2SO3H (sulphamic acid)
Correct choice is
- I, II only
- I, II, III
- II, III only
- I only
Q. Concentrated HNO3, upon long standing, turns yellow-brown due to the formation of
(IIT-JEE, 2012)
(IIT-JEE, 2012)
- NO
- N2O
- N2O4
- NO2
Q. Consider the following reaction:
The decreasing order of acidic strengths of (I) phthalic (II) terephthalic, and (III) isophthalic acids are:
- I > II > III
- I > III > II
- III > II > I
- II > III > I
Q. Which among the following oxides can yield Nitric acid on hydrolysis?
Q. The Ostwald process is used in the preparation of:
- Nitric acid
- Nitrous acid
- Sulfuric acid
- Oleum
Q. O2 is absorbed by alkaline solution of pyrogallol.
- True
- False
- Ambiguous
- None of these
Q. HNO2 (Nitrous acid) is a monobasic acid. – True or False?
- True
- False
Q. An aqueous solution of a gas (X) shows the following reactions.
(i) It turns red litmus blue.
(ii) When added in excess to a CuSO4 solution, a deep blue colour is obtained.
(iii) On addition of FeCl3 solution, a brown precipitate soluble in dilute HNO3 is obtained.
Then the gas (X) will be :
(i) It turns red litmus blue.
(ii) When added in excess to a CuSO4 solution, a deep blue colour is obtained.
(iii) On addition of FeCl3 solution, a brown precipitate soluble in dilute HNO3 is obtained.
Then the gas (X) will be :
- SO2
- NH3
- NO2
- N2O
Q.
Which one of the following acids possesses oxidizing, reducing and complex forming properties?
Nitric acid
Hydrochloric acid
Sulphuric acid
Nitrous acid
Q. Among the following oxides, the correct order of acidity is:
- N2O5 > NO2> N2O3 > N2O
- N2O > N2O3 > N2O5 > NO2
- N2O5 < NO2 < N2O3 < N2O
- N2O5 > NO2 > N2O >N2O3
Q. Write the reaction of aromatic primary amines with nitrous acid.
Q. Assertion :Statement − 1 : PCl3 on hydrolysis gives H3PO3 Reason: Statement − 2 : H3PO3 exists in two tautomeric forms :
- Statement − 1 is trueStatement − 2 is trueStatement − 2 is correct explanation for Statement − 1.
- Statement − 1 is trueStatement − 2 is trueStatement − 2 is not the correct explanation for Statement − 1.
- Statement − 1 is trueStatement − 2 is false.
- Statement − 1 is falseStatement − 2 is true.
Q. CO2 in water behaves as :
- weak monobasic acid HO−CO2H
- weak diacid base CO(OH)2
- weak monoacid base HO−CO2H
- weak di-basic H2CO3
Q. Which of the following product is formed by the reaction of sulphur dioxide with chlorine in presence of sunlight?
- SO2Cl
- SO2Cl2
- SOCl2
- SO3Cl
Q. Secondary nitro compounds when react with HNO2 forms crystalline solids which one on treatement with NaOH gives
- Red solution
- Blue solution
- White precipitate
- Yellow colouration
Q. Which of the following are amphoteric?
- BeO
- Al2O3
- ZnO
- SO2
Q. A reddish-pink substance on.heating gives off a vapor which condenses on the sides of the test tube and the substance turns blue. If on cooling water is added to the residue, it turns to its original color. The substance is :
- lodine crystals
- Copper sulphate crystals
- Cobalt chloride crystals
- Zinc oxide
Q. X+C+Cl2High Temp.−−−−−−−→Y+CO
Y+2H2O→Z+2HCl
Compound Y is found in polymeric structure and is an electron deficient molecule. The compound Y is:
- BeO
- BeCl2
- Be(OH)2
- BeO.Be(OH)2
Q. Concentrated HNO3, upon long standing, turns yellow-brown due to the formation of
(IIT-JEE, 2012)
(IIT-JEE, 2012)
- NO
- NO2
- N2O
- N2O4
Q. What is the catalyst used in the industrial manufacture of nitric acid?
- Platinum-Rhodium gauge sheet
- Powdered iron (III) oxide
- Vanadium (V) oxide
- Zinc-mercury amalgam