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Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide

Appeared in 11 of the 11 available papers.

Examined in
11 of 11 papers

Appears almost every year — treat as core

Typically worth
4.9 marks

Average per paper it appears in · 54 marks in total

Usual form
Short answer

65% of this chapter's 52 questions

Needs a diagram
10%

5 questions carry a figure — practise drawing them

Question-type distribution

  • Short answer34
  • MCQ7
  • Difference6
  • Fill in the blank5

Most frequent topics

Qualitative analysis using NaOH and NH₄OH 52
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Showing 25 of 52 matching questions (54 marks).

25 questions

2(ii)

Identify the following terms / compounds:

3(i)

Alex was given a solution of an unknown salt Y for analysis. He performed the following tests and recorded his observations: To a part of the solution Y, he added silver nitrate solution and obtained a white precipitate which was soluble in ammonium hydroxide solution. To the remaining solution he added a few drops of sodium hydroxide solution and obtained a pale blue precipitate. Based on the observations made by Alex, identify:

7(iii)

Give one relevant observation for the following:

2(iii)

Complete the following sentences by choosing the correct word(s) from the brackets:

3(iv)

Give one significant observation when:

5(iv)

Rohit took two different salt solutions in test tubes C and D as shown in the figure below. He added dilute HCl to each of the two test tubes. The products formed in the test tubes C and D are silver chloride and lead chloride respectively. State:

Figure for this question
8(ii)

Differentiate between the following pairs of compounds using the reagent given in the bracket:

7(i)

Rita was given an unknown salt for identification. She prepared a solution of the salt and divided it into two parts. To the first part of the salt solution, she added a few drops of ammonium hydroxide and obtained a reddish-brown precipitate To the second part of the salt solution, she added a few drops of silver nitrate solution and obtained a white precipitate. Name:

1

Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.)

2(iii)

Fill in the blanks with the choices given in the brackets:

3(i)

Identify the cation in each of the following cases:

3(iv)

Complete and balance the following equations:

5(iv)

Study the following observations and name the anions present in each of the reactions.

6(iii)

Choose the substances given in the box below to answer the following questions:

Figure for this question
6(iv)

State one relevant observation for each of the following:

6(i)

Distinguish between the following as directed:

Select the correct option for each of the following questions.