1
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The major product obtained from E2 - elimination of 3-bromo-2-fluoropentane is
A
JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 116 English Option 1
B
JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 116 English Option 2
C
JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 116 English Option 3
D
JEE Main 2020 (Online) 2nd September Evening Slot Chemistry - Haloalkanes and Haloarenes Question 116 English Option 4
2
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Three elements X, Y and Z are in the 3rd period of the periodic table. The oxides of X, Y and Z, respectively, are basic, amphoteric and acidic. The correct order of the atomic numbers of X, Y and Z is :
A
X < Z < Y
B
Y < X < Z
C
Z < Y < X
D
X < Y < Z
3
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Let a, b, c $$ \in $$ R be all non-zero and satisfy
a3 + b3 + c3 = 2. If the matrix

A = $$\left( {\matrix{ a & b & c \cr b & c & a \cr c & a & b \cr } } \right)$$

satisfies ATA = I, then a value of abc can be :
A
3
B
$${1 \over 3}$$
C
-$${1 \over 3}$$
D
$${2 \over 3}$$
4
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
If the equation cos4 $$\theta $$ + sin4 $$\theta $$ + $$\lambda $$ = 0 has real solutions for $$\theta $$, then $$\lambda $$ lies in the interval :
A
$$\left[ { - {3 \over 2}, - {5 \over 4}} \right]$$
B
$$\left( { - {1 \over 2}, - {1 \over 4}} \right]$$
C
$$\left( { - {5 \over 4}, - 1} \right]$$
D
$$\left[ { - 1, - {1 \over 2}} \right]$$
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