1
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Arrange the following labelled hydrogens in decreasing order of acidity : JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 133 English
A
b > c > d > a
B
b > a > c > d
C
c > b > d > a
D
c > b > a > d
2
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Two elements A and B have similar chemical properties. They don’t form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are :
A
Li and Mg
B
Cs and Ba
C
Na and Rb
D
Na and Ca
3
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Cast iron is used for the manufacture of :
A
wrought iron, pig iron and steel
B
wrought iron and pig iron
C
wrought iron and steel
D
pig iron, scrap iron and steel
4
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the reaction sequence given below: JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 87 English
Which of the following statements is true?
A
Changing the concentration of base will have no effect on reaction (1)
B
Changing the concentration of base will have no effect on reaction (2)
C
Changing the base from OH- to -OR will have no effect on reaction (2)
D
Doubling the concentration of base will double the rate of both the reactions
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