Home Maths JEE - Advanced Previous Year Paper JEE-Advanced-2015-Paper-1 PART – II: CHEMISTRY SECTION – 1 (Maximum Ma…
Maths JEE - Advanced Previous Year Paper JEE-Advanced-2015-Paper-1 Numeric Response
Published on: August 13, 2026

PART – II: CHEMISTRY

SECTION – 1 (Maximum Marks: 32)

This section contains EIGHT questions

The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9, both inclusive

Marking scheme:

+4 If the bubble corresponding to the answer is darkened

0 In all other cases

If the freezing point of a 0.01 molal aqueous solution of a cobalt (III) chloride-ammonia complex(which behaves as a strong electrolyte) is – 0.05580C, the number of chloride(s) in the coordination sphere of the complex is

[K f of water = 1.86 K kg mol – 1 ]

PART-II: CHEMISTRY

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Text Solution

Verified by Experts
The correct answer is:
1

(1) T f = iK f m

0.0558 = i x1.86 x 0.01

i = 3

Complex is [Co (NH 3 ) 5 Cl] Cl 2

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