Byju's Answer

Question Papers

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}

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

View Solution

Q. The third ionization enthalpy is minimum for :

View Solution

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)

View Solution

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

View Solution

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

View Solution