Q:

Modern periodic table is based on atomic number of the elements. The significance of atomic number was proved by the experiment of ________

A) Moseley's work on X-ray spectra	B) Bragg's work on X-ray diffraction
C) Mulliken's oil drop experiment	D) Discovery of X-ray by Roentgen

Answer & Explanation Answer: A) Moseley's work on X-ray spectra

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry

8 8149

Q:

One who dies for a noble cause

A) Martyr	B) Pilgrim
C) Astronomer	D) Pantomath

Answer & Explanation Answer: A) Martyr

Explanation:

One who dies for a noble cause is called a martyr. He is a person who dies fighting for what they believe in like advocating religious or other beliefs, refusing to renounce, etc...

Report Error

View Answer Report Error Discuss

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

10 8142

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

$i = \frac{1 + α (x + y - 1)}{1}$

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

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE

6 8139

Q:

The fastest moving insect in the world is the

Answer

Tropical cockroach

Workspace

Report Error

View answer Workspace Report Error Discuss

Subject: Animals and Birds

55 8138

Q:

Which media have the ability to have data/information stored (written) on them by users more than once?

A) CD-R disks	B) CD-RW disks
C) Zip disks	D) Optical disks

Answer & Explanation Answer: B) CD-RW disks

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Computer
Exam Prep: Bank Exams
Job Role: Bank PO

24 8124

Q:

What is the name of Sweden's Parliament ?

A) Storting	B) Knesset
C) Riksdag	D) Sejm

Answer & Explanation Answer: C) Riksdag

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: General Awareness

29 8120

Q:

What is the currency of Indonesia?

A) rupiah	B) dinar
C) rangit	D) riyal

Answer & Explanation Answer: A) rupiah

Explanation:

Currency of Indonesia is rupiah

Report Error

View Answer Report Error Discuss

Filed Under: General Awareness

30 8114

Q:

Seawater (i.e. saltwater) freezes at:

A) at a slightly higher temperature than fresh water	B) at a slightly lower temperature than fresh water.
C) the same temperature as fresh water.	D) seawater does not freeze.

Answer & Explanation Answer: B) at a slightly lower temperature than fresh water.

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: General Science

37 8113

Questions

Quick Links