JEE Advanced ...

JEE Advanced Paper 2 | 2020

The

1^{s t}, 2^{n d}

and the

3^{r d}

ionization enthalpies,

I_{1}, I_{2},

and

I_{3}

, of four atoms with atomic numbers

n, n + 1, n + 2

, and

n + 3

, where

n < 10

, are tabulated below. What is the value of n?

View Solution

Consider the following compounds in the liquid form:

O_{2}, H F, H_{2} O, N H_{3}, H_{2} O_{2}, C C l_{4}, C H C l_{3}, C_{6} H_{6}, C_{6} H_{5} C l

When a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?

View Solution

Q. In the chemical reaction between stoichiometric quantities of

K M n O_{4}

and

K I

in weakly basic solution, what is the number of moles of

I_{2}

released for

4

moles of

K M n O_{4}

consumed?

View Solution

Q. An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of

1 m L

3 % H_{2} O_{2}

. a blue alcohol layer was obtained. The blue color is due to the formation of a chromium (VI) compound

‘ X^{'}

. What is the number of oxygen atoms bonded to chromium through only single bonds in a molecule of

X

View Solution

Q. The structure of a peptide is given below.
If the absolute values of the net charge of the peptide at

p H = 2, p H = 6

and

p H = 11

are

| z_{1} |, | z_{2} |,

and

| z_{3} |

, respectively, then what is

| z_{1} | + | z_{2} | + | z_{3} | ?

View Solution

Q. An organic compound

(C_{8} H_{10} O_{2})

rotates plane-polarized light. It produces pink color with neutral

F e C l_{3}

solution. What is the total number of all the possible isomers for this compound?

View Solution