Q:

The degree of dissociation ( $α$ ) of a weak electrolyte, $A_{x} B_{y}$ is related to van't Hoff factor (i) by the expression:

$1 . α = \frac{x + y + 1}{i - 1}$

$2 . α = \frac{x + y - 1}{i - 1}$

$3 . α = \frac{i - 1}{x + y + 1}$

$4 . α = \frac{i - 1}{x + y - 1}$

A) 1 is correct	B) 2 is correct
C) 3 is correct	D) 4 is correct

Answer & Explanation Answer: D) 4 is correct

Explanation:

Van't Hoff factor (i) = $\frac{O b s e r v e d C o l l i g a t i v e P r o p e r t y}{N o r m a l C o l l i g a t i v e P r o p e r t y}$

$\begin{matrix} A_{x} B_{y} \\ 1 - α \end{matrix} \to \begin{matrix} x A^{+ y} \\ x α \end{matrix} + \begin{matrix} y B^{- x} \\ y α \end{matrix}$

Total Moles = $1 - α + x α + y α$ = $1 - α (x + y - 1)$

$i = \frac{1 + α (x + y - 1)}{1}$

$\Rightarrow α = \frac{i - 1}{x + y - 1}$

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Filed Under: Chemistry
Exam Prep: AIEEE

6 7265

Q:

Select the antonym of

to contend

A) to comply	B) to oppugn
C) to grapple	D) to vie

Answer & Explanation Answer: A) to comply

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

1 7263

Q:

In which of the following mammals estrous cycle is absent ?

A) Rabbit	B) Horse
C) Cow	D) Monkey

Answer & Explanation Answer: D) Monkey

Explanation:

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams

19 7253

Q:

Cutaneous respiration occurs in

A) Cockroach	B) Salamander
C) Crab	D) Parrot

Answer & Explanation Answer: B) Salamander

Explanation:

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Filed Under: Biology

45 7251

Q:

How many holes are in this shirt?

how_many_holes_are_there_in_this_shirt1542186605.jpg image

A) 4	B) 7
C) 8	D) 6

Answer & Explanation Answer: C) 8

Explanation:

There are 8 holes in this given shirt.

how_many_holes_are_there_in_this_t-_shirt11542267000.jpg image

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Filed Under: Logic Puzzles
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

34 7251

Q:

_________ has successfully created the country’s first smart grid project, which will generate power from renewable sources of energy.

A) Indian Institutes of Technology	B) Indian Institutes of Engineering Science Technology
C) Indian Institutes of Space Science and Technology	D) Indian Institutes of Management

Answer & Explanation Answer: B) Indian Institutes of Engineering Science Technology

Explanation:

The Indian Institute of Engineering Science and Technology (IIEST) has successfully created the country’s first smart grid project, which will generate power from renewable sources of energy. The project will soon be inaugurated by President Pranab Mukherjee, IIEST Director Prof Ajoy Kumar Roy. The smart grid will be synchronised to generate power from solar, wind and vegetable waste resources, depending on the weather conditions and availability of waste products. It is the first of its kind in the country.

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Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

7 7249

Q:

Which of the following places is associated with Jainism

A) Kapilvastu	B) Pava
C) Prayag	D) Shravasti

Answer & Explanation Answer: B) Pava

Explanation:

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Filed Under: Indian History

5 7235

Q:

Which Indian state touches the border of maximum states?

A) Madhya Pradesh	B) Assam
C) Uttar Pradesh	D) Chhattisgarh

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