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Test: Important Compounds of s-Block (Old NCERT) - NEET MCQ


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10 Questions MCQ Test Chemistry Class 11 - Test: Important Compounds of s-Block (Old NCERT)

Test: Important Compounds of s-Block (Old NCERT) for NEET 2024 is part of Chemistry Class 11 preparation. The Test: Important Compounds of s-Block (Old NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Important Compounds of s-Block (Old NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Important Compounds of s-Block (Old NCERT) below.
Solutions of Test: Important Compounds of s-Block (Old NCERT) questions in English are available as part of our Chemistry Class 11 for NEET & Test: Important Compounds of s-Block (Old NCERT) solutions in Hindi for Chemistry Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Important Compounds of s-Block (Old NCERT) | 10 questions in 15 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 11 for NEET Exam | Download free PDF with solutions
Test: Important Compounds of s-Block (Old NCERT) - Question 1
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In Castner Kellner cell:

Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 1
  • Castner Kellner cell is also called a mercury cathode cell.
  • In this cell, Hg flows along the bottom of the cell and acts as a cathode in the left-hand compartment fitted with graphite anodes in brine (NaCl) solution, whereas the right-hand compartment is fitted with Fe cathodes dipped in very dilute NaOH solution and Hg acts as the anode in this compartment.
  • Thus, Hg acts as an intermediate electrode by induction, cathode on LHS and anode in RHS.

 

Test: Important Compounds of s-Block (Old NCERT) - Question 2
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Heating limestone at a temperature of 1070 K we get:

Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 2

Heating limestone at a temperature of 1070K we get quick lime i.e CaO.

CaCO3 ⇌ CaO (s) + CO2 (s)

Additional Information: Calcium oxide can be produced by the thermal decomposition of materials like limestone or seashells that contain calcium carbonate in a lime kiln.

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Test: Important Compounds of s-Block (Old NCERT) - Question 3
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Aqueous solution of which of the following compounds is used to detect carbon dioxide:​

Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 3

On passing CO2 gas, Ca(OH)2 becomes CaCO3 (milky white ppt.) which proves the presence of CO2.

Test: Important Compounds of s-Block (Old NCERT) - Question 4
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Passing carbon dioxide through slaked lime gives:​
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 4

If CO2 is passed through slaked lime(calcium hydroxide Ca(OH)2), it gives out calcium carbonate (CaCO3) also called marble/limestone.

CO2 + Ca(OH)2→ CaCO3+ H2O

Test: Important Compounds of s-Block (Old NCERT) - Question 5
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Bones and teeth contains:
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 5
  • Teeth are composed of calcium, phosphorus, and other minerals. 
  • Bones contain calcium, phosphorus, sodium and other minerals, but mostly consist of the protein collagen.

Additional Information: The hardest part of the human body, teeth mostly consist of a calcified tissue called dentin. The tooth's dentine tissue is covered in enamel, that hard, shiny layer that you brush.

Test: Important Compounds of s-Block (Old NCERT) - Question 6
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In Castner Kellner cell, electrolyte used is:
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 6

In the Castner-Kellner method NaOH is prepared by the electrolysis of an aqueous solution of NaCl(Brine).

Additional Information: The Castner Kellner process is a method of electrolysis of sodium chloride solution to produce alkali hydroxide. It uses electrolytes of NaCl solution graphite anode and mercury cathode.

Test: Important Compounds of s-Block (Old NCERT) - Question 7
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Milk of lime reacts with chlorine to produce:
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 7

Slaked lime (milk of lime) reacts with chlorine gas to produce the bleaching agent calcium hypochlorite – a common form of 'swimming pool' chlorine.

Test: Important Compounds of s-Block (Old NCERT) - Question 8
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What is washing soda?
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 8
  • Sodium carbonate, Na2CO3, (washing soda) is the water-soluble sodium salt of carbonic acid, well-known domestically for its everyday use as a water softener.
  • Pure sodium carbonate is a white, odorless powder that is hygroscopic (absorbs moisture from the air).
  • It has a strongly alkaline taste and forms a moderately basic solution in water.
Test: Important Compounds of s-Block (Old NCERT) - Question 9
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Pure NaCl is obtained by the process of:
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 9

Crystallization: A chemical solid-liquid separation technique in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs.

Additional Information:

  • Crude sodium chloride, generally obtained by the crystallization of brine solution, contains sodium sulphate, calcium sulphate, calcium chloride and magnesium chloride as impurities.
  • To get pure sodium chloride first the crude sodium chloride is dissolved in a minimum amount of water and filtered to remove insoluble impurities.
  • Now into the saturated solution of sodium chloride hydrogen chloride gas is passed.
  • Then pure sodium chloride crystallizes.
  • The other compounds which are present in small amounts such as MgCl2MgCl2 and CaCl2CaCl2 remain in solution.
Test: Important Compounds of s-Block (Old NCERT) - Question 10
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The formula of bleaching powder is:​
Detailed Solution for Test: Important Compounds of s-Block (Old NCERT) - Question 10

The chemical name of bleaching powder is calcium hypochlorite.it is manufactured by the action of chlorine on slaked lime (Ca(OH).
2Ca(OH)2+ 2Cl2→CaOCl2+ 2H2O+CaCl2

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