This chapter is currently out of syllabus
1
JEE Main 2021 (Online) 27th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
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Choose the correct statement from the following :
A
The standard enthalpy of formation for alkali metal bromides becomes less negative on descending the group.
B
The low solubility of CsI in water is due to its high lattice enthalpy.
C
Among the alkali metal halides, LiF is least soluble in water.
D
LiF has least negative standard enthalpy of formation among alkali metal fluorides.
2
JEE Main 2021 (Online) 27th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The number of water molecules in gypsum, dead burnt plaster and plaster of Paris, respectively are :
A
2, 0 and 1
B
0.5, 0 and 2
C
5, 0 and 0.5
D
2, 0 and 0.5
3
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
What are the products formed in sequence when excess of CO2 is passed in slaked lime?
A
Ca(HCO3)2, CaCO3
B
CaCO3, Ca(HCO3)2
C
CaO, Ca(HCO3)2
D
CaO, CaCO3
4
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Match List - I with List - II :

List - I List - II
(a) Li (i) photoelectric cell
(b) Na (ii) absorbent of $$C{O_2}$$
(c) K (iii) coolant in fast breeder nuclear reactor
(d) Cs (iv) treatment of cancer
(v) bearings for motor engines


Choose the correct answer from the options given below :
A
(a) - (v), (b) - (i), (c) - (ii), (d) - (iv)
B
(a) - (v), (b) - (ii), (c) - (iv), (d) - (i)
C
(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
D
(a) - (v), (b) - (iii), (c) - (ii), (d) - (i)
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