JEE Main 202228 JulyEvening Shift
- Exam
- JEE Main
- Year
- 2022
- Date
- 28 July
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- s Block Elements
JEE Main 2022 · 28 July · Evening Shift · Chemistry · s Block Elements
Statement I: An alloy of lithium and magnesium is used to make...
Statement I: An alloy of lithium and magnesium is used to make aircraft plates.
Statement II : The magnesium ions are important for cell-membrane integrity.
In the light the above statements, choose the correct answer from the options given below
Options
- ABoth Statement I and Statement II are true
- BBoth Statement I and Statement II are false
- CStatement I is true but Statement II is false
- DStatement I is false but Statement II is true
Correct answer
B. Both Statement I and Statement II are false
Step-by-step solution
Lithium metal is used to make useful alloys, for example with lead to make ‘white metal’ bearings for motor engines, with aluminium to make aircraft parts, and with magnesium to make armour plates. So, Alloy of and is used to make armour plates and not aircraft plates.
Calcium plays important roles in neuromuscular function, interneuronal transmission and cell membrane integrity