When zeolite, which is hydrated sodium aluminium silicate is treated with hard water, the sodium ions are exchanged with which of the following ion(s)?

a.  H+ ions

b.  Mg2+ ions

c.  Ca2+ ions

d.  SO42- ions

Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Match the elements given in Column I with the properties mentioned in Column II.

Column I

Column II

A. Li

1. Insoluble sulphate 

B. Ca

2. Strongest monoacidic base

C. Na

3. Most negative EΘ value among alkali metals

D. Ba 

4. Insoluble oxalate 

 

Codes

          A           B          C           D

1.       3          2          4           1

2.       1          2           3           4

3.       1          4           3           2

4.       3          4           2           1

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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When sodium is dissolved in liquid ammonia, a solution of deep blue color is obtained. The color of the solution is due to

1. Ammoniated electron

2. Sodium ion

3. Sodium amide

4. Ammoniated sodium ion

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Dead burnt plaster is-

1. CaSO4

2. CaSO4·12H2O

3. CaSO4·H2O

4. CaSO4·2H2O

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Suspension of slaked lime in water is known as

1. Lime water

2. Quick lime

3. Milk of lime

4. Aqueous solution of slaked lime

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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The formula of soda ash is

1.  Na2CO3·10H2O

2.  Na2CO3·2H2O

3.  Na2CO3·H2O

4.  Na2CO3

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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A substance which gives brick red flame and breaks down on heating to give oxygen and a brown gas is

1. Magnesium nitrate

2. Calcium nitrate

3. Barium nitrate

4. Strontium nitrate

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Which of the following statements is true about Ca(OH)2?

1. It is used in the preparation of bleaching powder

2. It is a light blue solid

3. It does not possess a disinfectant property

4. It is used in the manufacture of cement

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Chemical A is used for the preparation of washing soda to recover ammonia. When CO2 is bubbled through an aqueous solution of A, the solution turns milky. It is used in whitewashing due to its disinfectant nature. The chemical formula of A is-

1. Ca(HCO3)2

2. CaO

3. Ca(OH)2

4. CaCO3

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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Several sodium compounds find use in industries. Which of the following compounds are used in the textile industry?

a. Na2CO3

b. NaHCO3

c. NaOH

d. NaCl

Choose the correct option
1. (a, c)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Compounds of Ca and Na -Preparations, Properties & Uses |
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