Q1.
Sodium is commercially obtained by the electrolysis of its fused sodium chloride. The process is called
📅IOM
Q2.
Which of the following metals gives golden yellow colour on flame test
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Q3.
Borax is
Q4.
What happens when ZnCl2 is treated with NaOH
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Q5.
Sodium reacts more vigorously with water than lithium because sodium is
Q6.
Alkali metals are good reducing agents because
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Q7.
When conc. solution of NaCl in water is saturated with NH3 and then CO2 is passed through the liquid NaCl is converted into
Q8.
The electronic configuration of an element is 2, 8, 1. Which of the following statement is true?
Q9.
Metallic lustre of sodium metal can be explained on the basic of
Q10.
A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of
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Q11.
Sodium and potassium are kept under
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Q12.
Fire extinguisher contains H2SO4 and
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Q13.
Electrolytic reduction method is used in the extraction of
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Q14.
The best material used in photo emission is
📅IOM 1992
Q15.
Excess of NaOH when reacts with zinc produces
📅IOM 1992
Q16.
The chemicals that are consumed during the manufacture of sodium carbonate by Solvay's process are
📅MOE 2066
Q17.
In the manufacture of washing soda Na2CO3 the compound formed after the treatment of ammonical brine solution with CO2 is
📅MOE 2008
Q18.
Sodium is made by electrolysis of molten mixture of about 40% NaCl and 60% CaCl2 because
📅MOE 2008
Q19.
Caustic soda can be manufactured by
📅MOE 2063
Q20.
How many water of crystallization (WOC) is present in a molecule of washing soda?
📅MOE 2062
Q21.
In Down's process for the extraction of sodium
📅MOE 2061
Q22.
The alkali metals can easily be detected by the flame test, because they have
📅MOE 2050
Q23.
The hydride of an element E reacts with water producing hydrogen and an alkali solution. The element 'E' is probably
📅MOE 2050
Q24.
Which of the following elements exists in only one oxidation state in most of its compound?
📅Bangladesh 2066
Q25.
Sodium nitrate decomposes above 800°C to give
Q26.
NaOH is manufactured by the electrolysis of brine solution. The products of reaction are
📅MOE
Q27.
Squashes are stored by adding
Q28.
Soda ash is
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Q29.
What is the product formed when CO2 is bubbled into aqueous solution of Na2CO3
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Q30.
Which of the following are recycled in the manufacture of Na2CO3
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