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1
JEE Main 2021 (Online) 17th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
One of the by-products formed during the recovery of NH3 from Solvay process is :
2
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The correct order of conductivity of ions in water is :
3
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Given below are two statements :
Statement I : Both CaCl2 . 6H2O and MgCl2 . 8H2O undergo dehydration on heating.
Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic.
In the light of the above statements, choose the correct answer from the options given below :
Statement I : Both CaCl2 . 6H2O and MgCl2 . 8H2O undergo dehydration on heating.
Statement II : BeO is amphoteric whereas the oxides of other elements in the same group are acidic.
In the light of the above statements, choose the correct answer from the options given below :
4
JEE Main 2021 (Online) 24th February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match List - I with List - II.
Choose the correct answer from the options given below :
| List I (Salt) | List II (Flame colour wavelength) | ||
|---|---|---|---|
| (a) | LiCl | (i) | 455.5 nm |
| (b) | NaCl | (ii) | 670.8 nm |
| (c) | RbCl | (iii) | 780.0 nm |
| (d) | CsCl | (iv) | 589.2 nm |
Choose the correct answer from the options given below :
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