JEE Main (Jan...

JEE Main (Jan 8) - Morning Shift | 2020

Q. Among the gases (a) - (e), the gases that cause greenhouse effect are :
(a ) CO

_{2}

(b ) H

_{2}

O
(c ) CFCs
(d ) O

_{2}

(e ) O

_{3}

$(a), (b), (c) a n d (d)$
$(a) a n d (d)$
$(a), (c), (d) a n d (e)$
$(a), (b), (c) a n d (e)$

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Q. The third ionization enthalpy is minimum for :

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A graph of vapour pressure and temperature for three different liquids X, Y and Z is shown :

The following inferences are made:
(A) X has higher intermolecular interactions compared to Y.
(B) X has lower intermolecular interactions compared to Y.
(C) Z has lower intermolecular interactions compared to Y.
The correct inference(s) is /are :

(A) and (C)
(A)
(C)
(B)

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Q. Which of the following statement is not true for glucose?

The pentaacetate of glucose does not react with hydroxylamine to give oxime
Glucose exists in two crystalline forms $α$ and $β$
Glucose reacts with hydroxylamine to form oxime
Glucose gives Schiff's test for aldehyde

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Q. The decreasing order of reactivity towards dehydrohalogenation

(E_{1})

reaction of the following compounds is :

D > B > C > A
B > A > D > C
B > D > C > A
B > D > A > C

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