This chapter is currently out of syllabus
1
JEE Main 2021 (Online) 27th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
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
2
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
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
3
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
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)
4
JEE Main 2021 (Online) 27th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R.

Assertion A : Lithium halides are some what covalent in nature.

Reason R : Lithium posses high polarisation capability.

In the light of the above statements, choose the most appropriate answer from the options given below :
A
A is true but R is false
B
A is false but R is true
C
Both A and R are true but R is NOT the correct explanation of A
D
Both A and R are true and R is the correct explanation of A
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