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Which of the following is the chemical formula of nitric acid?

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Important Questions on Study of Compounds - Nitric Acid

EASY

Identify the substance underlined:

The dilute acid which is an oxidising agent.

EASY

Complete the following equation:

S + conc. HNO3

EASY

State one observation for the following:

Concentrated nitric acid is reacted with sulphur

HARD
How nitric acid is detected in the laboratory?
EASY
What is the effect of nitric acid on blue litmus solution?
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Nitrogen is known to form a variety of oxides and oxyacids. NO and N2O are unstable, while NO2 is a stable oxide. NO2 is a brown acidic gas at room temperature and on cooling below 20°C gives N2O4.  NO2/N2O4dissolves in water to give nitric acid. N2O4 reacts with NO to form N2O3. When some metals react with dil. HNO3 at room temperature, oxides of nitrogen in lower oxidation states are formed. The correct statement is
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Crude gold can be purified by the addition of concentrated _____ (sulphuric/ nitric) acid.
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The compound which can act as an oxidising agent as well as reducing agent is:
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Which of the following is the naturally occurring nitrate?
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Account for the following:

Commercially used concentrated nitric acid is yellow in colour, but when it is diluted with water, it turns colourless.

EASY
What is the effect of nitric acid on methyl orange?
HARD
All of the given statements are true for nitric acid except
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Write the chemical equations for the following reactions:
Sulphur reacts with concentrated nitric acid.
EASY
Which of the following metals does not dissolve in concentrated HNO3?
EASY
The yellow colour of nitric acid can be removed by-
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Draw the Lewis structure of the nitric acid molecule. Explain the role of the lone pair of nitrogen in the bonding.
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Identify the acid which matches the following description.
The acid is used in the preparation of a non-volatile acid.
EASY
An acid obtained from concentrated nitric acid on reaction with sulphur:
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The oxidised product obtained on reaction of H2S gas with dilute HNO3 is _____.