Some Important Compounds of Calcium
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CHXI10:THE S-BLOCK ELEMENTS

315981 The process of industrial manufacturing of sodium carbonate is known as

1 Castner process
2 Haber's process
3 Le-blanc process
4 Chamber process
CHXI10:THE S-BLOCK ELEMENTS

315982 Which of the following chemicals, in addition to water, are used for the manufacture of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) by Solvay process?

1 \(\mathrm{NaCl}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
2 \(\mathrm{NaCl}, \mathrm{CO}_{2}\) and \(\mathrm{NH}_{3}\)
3 \(\mathrm{NaCl}, \mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{CO}_{2}\)
4 \(\mathrm{NaHCO}_{3}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315983 Sodium carbonate solution in water is alkaline due to

1 Hydrolysis of \(\mathrm{Na}^{+}\)
2 Hydrolysis of \(\mathrm{CO}_{3}^{2-}\)
3 Hydrolysis of both \(\mathrm{Na}^{+}\)and \(\mathrm{CO}_{3}^{2-}\) ions
4 None
CHXI10:THE S-BLOCK ELEMENTS

315984 In the reaction of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) with \(\mathrm{SO}_{2}\), the oxidation state of sulphur

1 Increases by 2 units
2 decreases by 2 units
3 decreases by 4 units
4 Remains the same
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CHXI10:THE S-BLOCK ELEMENTS

315981 The process of industrial manufacturing of sodium carbonate is known as

1 Castner process
2 Haber's process
3 Le-blanc process
4 Chamber process
CHXI10:THE S-BLOCK ELEMENTS

315982 Which of the following chemicals, in addition to water, are used for the manufacture of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) by Solvay process?

1 \(\mathrm{NaCl}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
2 \(\mathrm{NaCl}, \mathrm{CO}_{2}\) and \(\mathrm{NH}_{3}\)
3 \(\mathrm{NaCl}, \mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{CO}_{2}\)
4 \(\mathrm{NaHCO}_{3}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315983 Sodium carbonate solution in water is alkaline due to

1 Hydrolysis of \(\mathrm{Na}^{+}\)
2 Hydrolysis of \(\mathrm{CO}_{3}^{2-}\)
3 Hydrolysis of both \(\mathrm{Na}^{+}\)and \(\mathrm{CO}_{3}^{2-}\) ions
4 None
CHXI10:THE S-BLOCK ELEMENTS

315984 In the reaction of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) with \(\mathrm{SO}_{2}\), the oxidation state of sulphur

1 Increases by 2 units
2 decreases by 2 units
3 decreases by 4 units
4 Remains the same
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CHXI10:THE S-BLOCK ELEMENTS

315981 The process of industrial manufacturing of sodium carbonate is known as

1 Castner process
2 Haber's process
3 Le-blanc process
4 Chamber process
CHXI10:THE S-BLOCK ELEMENTS

315982 Which of the following chemicals, in addition to water, are used for the manufacture of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) by Solvay process?

1 \(\mathrm{NaCl}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
2 \(\mathrm{NaCl}, \mathrm{CO}_{2}\) and \(\mathrm{NH}_{3}\)
3 \(\mathrm{NaCl}, \mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{CO}_{2}\)
4 \(\mathrm{NaHCO}_{3}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315983 Sodium carbonate solution in water is alkaline due to

1 Hydrolysis of \(\mathrm{Na}^{+}\)
2 Hydrolysis of \(\mathrm{CO}_{3}^{2-}\)
3 Hydrolysis of both \(\mathrm{Na}^{+}\)and \(\mathrm{CO}_{3}^{2-}\) ions
4 None
CHXI10:THE S-BLOCK ELEMENTS

315984 In the reaction of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) with \(\mathrm{SO}_{2}\), the oxidation state of sulphur

1 Increases by 2 units
2 decreases by 2 units
3 decreases by 4 units
4 Remains the same
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CHXI10:THE S-BLOCK ELEMENTS

315981 The process of industrial manufacturing of sodium carbonate is known as

1 Castner process
2 Haber's process
3 Le-blanc process
4 Chamber process
CHXI10:THE S-BLOCK ELEMENTS

315982 Which of the following chemicals, in addition to water, are used for the manufacture of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) by Solvay process?

1 \(\mathrm{NaCl}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
2 \(\mathrm{NaCl}, \mathrm{CO}_{2}\) and \(\mathrm{NH}_{3}\)
3 \(\mathrm{NaCl}, \mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{CO}_{2}\)
4 \(\mathrm{NaHCO}_{3}, \mathrm{CO}\) and \(\mathrm{NH}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315983 Sodium carbonate solution in water is alkaline due to

1 Hydrolysis of \(\mathrm{Na}^{+}\)
2 Hydrolysis of \(\mathrm{CO}_{3}^{2-}\)
3 Hydrolysis of both \(\mathrm{Na}^{+}\)and \(\mathrm{CO}_{3}^{2-}\) ions
4 None
CHXI10:THE S-BLOCK ELEMENTS

315984 In the reaction of \(\mathrm{Na}_{2} \mathrm{CO}_{3}\) with \(\mathrm{SO}_{2}\), the oxidation state of sulphur

1 Increases by 2 units
2 decreases by 2 units
3 decreases by 4 units
4 Remains the same
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