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Earn 100

In the reaction of phosphorous with conc. HNO3, the oxidized and reduced products respectively are

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Important Questions on p- Block Elements

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When PbO2 reacts with concentrated HNO3, the gas evolved is
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How can you synthesise nitric oxide in the laboratory ?
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An inorganic Compound 'X' on treatment with concentrated H2SO4 produces brown fumes and gives dark brown ring with FeSO4 in presence of concentrated H2SO4. Also Compound 'X' gives precipitate 'Y', when its solution in dilute HCl is treated with H2S gas. The precipitate 'Y' on treatment with concentrated HNO3 followed by excess of NH4OH further gives deep blue coloured solution, Compound 'X' is:
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When copper is heated with conc. HNO3 it produces:
MEDIUM
Which of the following chemicals DOES NOT liberate hydrogen gas on reaction with Aluminum metal?
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How many gm of the oxidising agent gets reduced in the reaction of 65.4 gm of Zn with concentrated nitric acid?

[Atomic mass Zn=65.4, N=14, H=1, O =16 gm mol-1]

HARD
Concentrated nitric acid, upon long standing, turns yellow-brown due to the formation of
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The reaction of zinc with dilute and concentrated nitric acid, respectively, produces:
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Which statement is not true with respect to nitrate ion test?

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Match List I with List II

List I List II
A. Cobalt catalyst I. H2+Cl2 production
B. Syngas II. Water gas production
C. Nickel catalyst III. Coal gasification
D. Brine solution IV. Methanol production

Choose the correct answer from the options given below:-

MEDIUM
Excess of ammonia with sodium hypochlorite solution in the prescence of glue or gelatine gives:
HARD
The pair(s) of reagents that yield paramagnetic species is/are
HARD
The nitrogen containing compound produced in the reaction of HNO3 with P4O10
EASY

Identify the acid formed in the given reaction:

H2SO4+NaCl high temperature NaHSO4 + _____

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Among the following, identify the compound which cannot act as both oxidizing and reducing agents 
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Which one of the following is not a basic oxide?