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1
JEE Main 2020 (Online) 2nd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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The metal mainly used in devising photoelectric cells is :
A
Na
B
Rb
C
Li
D
Cs
2
JEE Main 2020 (Online) 9th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Among the statements (a)-(d) the correct ones are :

(a) Lithium has the highest hydration enthalpy among the alkali metals.

(b) Lithium chloride is insoluble in pyridine.

(c) Lithium cannot form ethynide upon its reaction with ethyne.

(d) Both lithium and magnesium react slowly with H2O.
A
(b) and (c) only
B
(a) and (d) only
C
(a), (b) and (d) only
D
(a), (c) and (d) only
3
JEE Main 2020 (Online) 8th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
When gypsum is heated to 393 K, it forms :
A
CaSO4 . 0.5H2O
B
CaSO4 . 5H2O
C
Dead burnt plaster
D
Anhydrous CaSO4
4
JEE Main 2019 (Online) 12th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The INCORRECT statement is :
A
Lithium is least reactive with water among the alkali metals
B
LiCl crystallises from aqueous solution as LiCl.2H2O
C
Lithium is the strongest reducing agent among the alkali metals
D
LiNO3 decomposes on heating to give LiNO2 and O2
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