Home
Class 9
CHEMISTRY
A substance that does not contain water ...

A substance that does not contain water of crystallization is:
(a) Blue vitriol
(b) Common salt
(c) Glauber's salt
(d) Washing soda crystals

A

Blue vitriol

B

Common salt

C

Glauber.s salt

D

Washing soda crystals

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question "A substance that does not contain water of crystallization is:", we need to analyze each of the given options: 1. **Blue Vitriol**: - Blue vitriol is the common name for copper sulfate pentahydrate. - Its chemical formula is \( \text{CuSO}_4 \cdot 5 \text{H}_2\text{O} \). - This indicates that it contains 5 molecules of water of crystallization. - Therefore, blue vitriol does contain water of crystallization. 2. **Common Salt**: - Common salt is known as sodium chloride. - Its chemical formula is \( \text{NaCl} \). - This compound does not contain any water of crystallization. - Hence, common salt is a candidate for the answer. 3. **Glauber's Salt**: - Glauber's salt is the common name for sodium sulfate decahydrate. - Its chemical formula is \( \text{Na}_2\text{SO}_4 \cdot 10 \text{H}_2\text{O} \). - This means it contains 10 molecules of water of crystallization. - Therefore, Glauber's salt does contain water of crystallization. 4. **Washing Soda Crystals**: - Washing soda is the common name for sodium carbonate decahydrate. - Its chemical formula is \( \text{Na}_2\text{CO}_3 \cdot 10 \text{H}_2\text{O} \). - This indicates that it also contains 10 molecules of water of crystallization. - Thus, washing soda crystals do contain water of crystallization. After analyzing all the options, we find that: - **Blue Vitriol**: Contains water of crystallization (5 H2O). - **Common Salt**: Does not contain water of crystallization. - **Glauber's Salt**: Contains water of crystallization (10 H2O). - **Washing Soda Crystals**: Contains water of crystallization (10 H2O). Thus, the correct answer is **(b) Common Salt**.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • WATER

    ICSE|Exercise TOPIC 2 Solution (2 MARKS QUESTIONS)|14 Videos

  • WATER

    ICSE|Exercise TOPIC 2 Solution (3 MARKS QUESTIONS)|20 Videos

  • WATER

    ICSE|Exercise TOPIC 1 Water (5 MARKS QUESTIONS)|17 Videos

  • THE PERIODIC TABLE

    ICSE|Exercise TOPIC 2 Studying Individual Groups (5 Marks Questions) |34 Videos

Similar Questions

Explore conceptually related problems

A substance that contains water of crystallization is called a ____ substances

Which of the following salts does not contain water of crystallisation?

Name: A crystalline salt without water of crystallization.

How many water of crystallization are there in washing soda?

How many water of crystallization are there in washing soda?

Name the elements present in the following compounds. (a) Sugar (b) Ammonia (c) Marble (d) Washing soda

Calculate the percentage mass of water in crystals of washing soda.

Water of crystallization is the definite number of water molecules chemically combined with a salt in its crystalline form. (T/F)

The nutrient medium used for tissue culture does not contain (a) carbon source (b) Inorganic salts (c) plant growth regulators (d) Enzymes (e) vitamins and amino acid

How many of the following statements are correct for green vitriol? 1. it can be used for the preparation of Mohr's salt. 2. It is a hydrated salt and its anhydrous form is white in colour. 3. The decomposition reaction of its anhydrous form is redox in nature. 4. It is used for making fenton's reagent used as a catalyst in organic chemistry. 5. It can be used for the preparation of Potassium ferrocynide. 6. It has same number of molcules of water of crystallization as white vitriol or blue vitriol 7. It turns brownish-yellow on exposure to atmosphere. 8. Its aqueous solution is acidic in natrue due to hydrolysis. 9. Out of the decomposition products of its anhydrous form, only one can turn acidified K_(2)Cr_(2)O_(7) solution green.

Home
Profile