1
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Amylopectin is compound of :
A
$$\alpha $$-D-glucose, C1 – C4 and C1 – C6 linkages
B
$$\beta $$-D-glucose, C1 – C4 and C2 – C6 linkages
C
$$\beta $$-D-glucose, C1 – C4 and C1 – C6 linkages
D
$$\alpha $$-D-glucose, C1 – C4 and C2 – C6 linkages
2
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Ethylamine (C2H5NH2) can be obtained from N-ethylphatalimide on treatment with :
A
CaH2
B
H2O
C
NaBH4
D
NH2NH2
3
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Increasing rate of SN1 reaction in the following compounds is : JEE Main 2019 (Online) 10th April Morning Slot Chemistry - Haloalkanes and Haloarenes Question 131 English
A
(B) < (A) < (D) < (C)
B
(A) < (B) < (C) < (D)
C
(A) < (B) < (D) < (C)
D
(B) < (A) < (C) < (D)
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Assume that each born child is equally likely to be a boy or a girl. If two families have two children each, then the conditional probability that all children are girls given that at least two are girls is :
A
$${1 \over {10}}$$
B
$${1 \over {17}}$$
C
$${1 \over {11}}$$
D
$${1 \over {12}}$$
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