Question # 1

Which of the following acids possess oxidizing and reducing properties.

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HCl

HNO2

HNO3

H2SO4

Which of the following is a reddish brown gas

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N₂O₃

NO₂

N₂O₃

N₂O₅

Which of the following gives acidic oxide

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N

As

Sb

Bi

The brown gas formed when metal reduces HNO3 is

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N2O5

N2O3

NO2

NO

In group V-A elements the most electronegative elements is

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Sb

N

P

As

In pyrite burner, the gas produced is.

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SO3

SO2

CO2

NO

Most likely product formed when formic acid is dehydrated in the presence of conc. H2SO4 is.

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CO2 and H2O

CO, CO2 and H2O

CO2 and H2

CO and H2O

The reaction between Cu and conc. H2SO4 produces

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SO3

SO2

H2

Cu + ions

P2O5 is usually used as

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Drying agent only

Reducing agent

Both drying and reducing agent

Both drying agent and oxidizing agent.

Out of all the elements of group VA, the highest ionization energy is possessed by

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N

As

Sb

Bi

The brown gas formed when metal reduces HNO₃

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N₂O₅

N₂O₃

NO₂

NO

Oxidation of NO in air produces

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N₂O

N₂O₃

N₂O₄

N₂O₅

In aqua regia, the ratio of conc. HCl to Conc. HNO3 is

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1 : 1

2 :1

1:2

3 : 1

Gold dissolves in "Aqua Regia" due to formation of Halide. Point out correct halide

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AuF₃

AuCl₃

AuBr₃

AuI₃

When concentrated H2SO4 and solid sodium chloride react together at room temperature the product are.

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Two salts only

A salt and a base

A salt and an acid

A salt and water

NH4NO3 on heating at 200 ^oC changes to

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N2O

NO

NO2

N2O4

An element has oxidation state -2, +4, +6 in its compounds. In which group in the periodic table is this element likely to be.

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Grooup III A

Group IV A

Group V A

Group VI A

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