FRANK Solutions for Class 10 Chemistry Chapter 9 - B - Nitric Acid

Get complete access to Frank Solutions for ICSE Class 10 Chemistry Chapter 9 B − Nitric Acid at TopperLearning. Learn to explain Ostwald’s process to prepare nitric acid along with a labelled diagram. Revise the properties and applications of nitric acid with our detailed Chemistry solutions.

In this ICSE Class 10 Chemistry chapter, you will also practise the balancing of certain Chemistry equations. For your board exam, you can prepare MCQs and various short answer questions by revising our textbook solutions and by attempting our online practice tests. You can check our Chemistry doubts and solutions, concept videos and question papers too.

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Chapter 9B - Nitric acid Exercise 235

Question 1
Solution 1
Question 2
Solution 2

Question 3
Solution 3

Chapter 9B - Nitric acid Exercise 236

Question 4
Solution 4
Question 5
Solution 5
Question 6
Solution 6
Question 7
Solution 7
Question 8
Solution 8
Question 9
Solution 9
Question 10
Solution 10
Question 11
Solution 11

Question 12
Solution 12
Question 13
Solution 13
Question 14
Solution 14
Question 15
Solution 15

Question 16
Solution 16
Question 17
Solution 17

Chapter 9B - Nitric acid Exercise 237

Question 18

Solution 18
Question 19
Solution 19

Question 20

Choose the correct answer from the options given below :

(i) Nitric acid on standing develops brownish colour which may be attributed to the presence of :

 

(ii) Concentrated nitric acid oxidises phosphorus to :

(a) H3PO4

(b) P2O3

(c) H3PO2

(d) H4P2O7

 

(iii) When treated with nitric acid which of the following liberate hydrogen?

(a) Zinc

(b) Magnesium

(c) Copper

(d) Mercury

 

(iv) The catalyst used in the manufacture of HNO3 by Ostwald process is

(a) Platinum black

(b) Finely dividend nickel

(c) Vanadium pentoxide

(d) Platinum gauze

Solution 20

(i) NO2

(ii) H3PO4

(iii) Magnesium

(iv) Platinum gauze

Question 21

Fill in the blank with appropriate word/words

(i) Aqua regia is a mixture of _______ and________

(ii) Furning nitric acid is obtained by dissolving an excess of _______ in conc. Nitric acid

(iii) 98% nitric acid is obtained by distilling 68% nitric acid with ________ under ______

(iv) Ammonal is a mixture of ________ and __________

(v) 3 Cu + 8 HNO3 (dilute) _______ + 4H2O + _________

Solution 21

(i) Aqua regia is a mixture of nitric acid and hydrochloric acid.

(ii) Fuming nitric acid is obtained by dissolving excess of nitrogen oxide in conc. nitric acid.

(iii) 98% nitric acid is obtained by distilling 68% nitric acid with conc. H2SO4 under pressure.

(iv) Ammonal is a mixture of ammonium nitrate and aluminium powder.

(v) 3Cu + 8HNO3 (dilute) 3Cu(NO3)2 + 4H2O + 2NO

Question 1991-1
Solution 1991-1
Question 1991-2
Solution 1991-2
Question 1991-3
Solution 1991-3
Question 1992-1
Solution 1992-1
Question 1992-2
Solution 1992-2
Question 1992-3
Solution 1992-3

Chapter 9B - Nitric acid Exercise 238

Question 1992-4

Solution 1992-4

Question 1994-1
Solution 1994-1
Question 1994-2
Solution 1994-2
Question 1994-3
Solution 1994-3
Question 1994-4
Solution 1994-4
Question 1995-1
Solution 1995-1
Question 1997-1
Solution 1997-1
Question 1998-1
Solution 1998-1
Question 1999-1

Describe what you see when concentrated nitric acid is added to copper.

Solution 1999-1

When concentrated nitric acid is added to copper brown fumes of nitrogen dioxide are observed.

Question 2000-1
Solution 2000-1
Question 2001-1

Name (formula is not acceptable) the gas produced in each of the following reactions:

(i)      By the action of concentrated nitric acid on copper.

(ii)     On warming ammonium sulphate with sodium hydroxide solution.

Solution 2001-1

(i)          Nitrogen dioxide

(ii)         Ammonia gas

Question 2001-2
Solution 2001-2
Question 2001-3
Solution 2001-3
Question 2002-1

Solution 2002-1
Question 2002-2
Solution 2002-2

Chapter 9B - Nitric acid Exercise 239

Question 2002-3
Solution 2002-3
Question 2002-4
Solution 2002-4
Question 2003-1
Solution 2003-1
Question 2003-2
Solution 2003-2
Question 2005-1
Solution 2005-1
Question 2005-2
Solution 2005-2
Question 2006-1
Solution 2006-1
Question 2007-1
Solution 2007-1
Question 2007-2
Solution 2007-2

Chapter 9B - Nitric acid Exercise 240

Question 2008-1

Solution 2008-1

Question 2008-2

Solution 2008-2
Question 2009-1
Solution 2009-1
Question 2011-1

(i) What is the special feature of the apparatus that is used in the laboratory preparation of nitric acid?

(ii) Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?

Solution 2011-1

(i) The complete apparatus should be made of glass only.

(ii) At high temperature, nitric acid decomposes and the glass apparatus may get damaged. Sodium formed at a higher temperature forms a hard crust which sticks to the walls of the retort. 

Question 2011-2

What would you observe in the following case :

Copper is heated with concentrated nitric acid in a hard glass test rube.

Solution 2011-2

Brown fumes of nitrogen dioxide are produced. Copper reacts with concentrated nitric acid to produce copper nitrate, water and nitrogen dioxide.

Question 2013-1

(i) Identify the gas evolved when sulphur is treated with concentrated NH3.

(ii) Balanced equation of oxidation of carbon with concentrated HNO3

Solution 2013-1

(i) When sulphur is treated with conc. nitric acid, it produces nitrogen dioxide.

(ii) 

Question 2015-1

Explain the following :

(i) Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals

(ii) Concentrated nitric acid appears yellow when it is left standing in a glass bottle.

(iii) An all glass apparatus is used in the laboratory preparation of nitric acid.

Solution 2015-1

(i) Dilute nitric acid is generally considered a typical acid except for its reaction with metals because it does not liberate hydrogen. It is a powerful oxidising agent, and nascent oxygen formed oxidises hydrogen in water.

(ii) Although pure concentrated nitric acid is colourless, it appears yellow when left standing in a glass bottle due to the dissolution of reddish brown nitrogen dioxide gas in the acid. Nitrogen dioxide is produced because of the thermal decomposition of a portion of nitric acid.

 4HNO3   2H2O + 4NO2 + O2

(iii) An all-glass apparatus is used in the laboratory preparation of nitric acid because nitric acid vapour corrodes rubber and cork.

Question 2016-1

Fill in the blanks using the appropriate words given below :

(Sulphur dioxide, Nitrogen dioxide, Nitric oxide, Sulphuric acid)

(i) Cold, dilute nitric acid reacts with copper to give ______.

(ii) Hot, concentrated nitric add reacts with sulphur to form ______.

Solution 2016-1

(i) Cold, dilute nitric acid reacts with copper to give nitric oxide.

(ii) Hot, concentrated nitric acid reacts with sulphur to form nitrogen dioxide.

Question 2017-1

Write a balanced equation for following :

(i) Action of cold and dilute nitric acid on copper

(ii) Action of conc. Nitric acid on sulphur

(iii) Reaction of ammonia with nitric acid

(iv) Laboratory preparation nitric acid.

Solution 2017-1

(i) 3Cu + 8HNO3 3Cu(NO3)2 + 4H2O+ 2NO↑

(ii)    

(iii)    

(iv)