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Questions and Answers
What is the common property of saline or ionic hydrides formed by the s-block metals?
What is the common property of saline or ionic hydrides formed by the s-block metals?
- They have covalent polymeric structure
- They are non-volatile, non-conducting crystalline solids (correct)
- They are volatile and conducting liquids
- They have ionic bond with hydrogen
Which of the following is an example of molecular hydride?
Which of the following is an example of molecular hydride?
- CaH2
- B2H6 (correct)
- LiH
- NaH
In the periodic table, which group of elements does not form hydrides?
In the periodic table, which group of elements does not form hydrides?
- Group 3, 4, and 5
- Group 1 and 2
- Group 6
- Group 7, 8, and 9 (correct)
What is the order of thermal stability of 1 and 2 group hydrides?
What is the order of thermal stability of 1 and 2 group hydrides?
What is the characteristic of metallic hydrides in their solid state?
What is the characteristic of metallic hydrides in their solid state?
What is the reaction of saline hydrides with water?
What is the reaction of saline hydrides with water?
What is the use of alkali metal hydrides?
What is the use of alkali metal hydrides?
Which of the following is a characteristic of molecular hydrides?
Which of the following is a characteristic of molecular hydrides?
What is the trend in stability of molecular hydrides in a period?
What is the trend in stability of molecular hydrides in a period?
Which of the following elements does not form a hydride in group 6?
Which of the following elements does not form a hydride in group 6?
What is a characteristic feature of electron rich molecular hydrides?
What is a characteristic feature of electron rich molecular hydrides?
Which of the following is an example of an electron precise molecular hydride?
Which of the following is an example of an electron precise molecular hydride?
What is the nature of the bonding in BeH2, MgH2, and LiH?
What is the nature of the bonding in BeH2, MgH2, and LiH?
What is the reason for the difference in reaction rate between H2 and Cl2, and D2 and Cl2?
What is the reason for the difference in reaction rate between H2 and Cl2, and D2 and Cl2?
What is the characteristic of hydrides formed by f-block metals?
What is the characteristic of hydrides formed by f-block metals?
What is the purpose of using H3PO4 in the industrial method of preparing H2O2?
What is the purpose of using H3PO4 in the industrial method of preparing H2O2?
What is the term used for the method of removing permanent hardness using Na2Z (sodium zeolite)?
What is the term used for the method of removing permanent hardness using Na2Z (sodium zeolite)?
What is the byproduct formed when MgSO4 reacts with Na2CO3 to remove permanent hardness?
What is the byproduct formed when MgSO4 reacts with Na2CO3 to remove permanent hardness?
What is the term used for the method of removing temporary hardness using lime?
What is the term used for the method of removing temporary hardness using lime?
What is the industrial method of preparing H2O2?
What is the industrial method of preparing H2O2?
What is the reason for hard water not producing lather with soap?
What is the reason for hard water not producing lather with soap?
What is the type of hardness of water due to the presence of bicarbonates of calcium and magnesium?
What is the type of hardness of water due to the presence of bicarbonates of calcium and magnesium?
What is the process of removing hardness from water called?
What is the process of removing hardness from water called?
What is the nature of water in terms of its pH?
What is the nature of water in terms of its pH?
What is the property of water that allows it to act as both an acid and a base?
What is the property of water that allows it to act as both an acid and a base?
What happens to bicarbonates of Ca and Mg during boiling?
What happens to bicarbonates of Ca and Mg during boiling?
What is the purpose of adding lime in Clark's method?
What is the purpose of adding lime in Clark's method?
Why is phosphoric acid preferred to sulphuric acid in the removal of temporary hardness?
Why is phosphoric acid preferred to sulphuric acid in the removal of temporary hardness?
What is the byproduct of the reaction between hydrated barium peroxide and sulphuric acid?
What is the byproduct of the reaction between hydrated barium peroxide and sulphuric acid?
What is the result of the reaction between Mg(HCO3)2 and heat?
What is the result of the reaction between Mg(HCO3)2 and heat?
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