Q:

Which one of the following elements is essential for construction is nuclear reactors

A) Cobalt	B) Nickel
C) Zirconium	D) Tungsten

Answer & Explanation Answer: C) Zirconium

Explanation:

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Filed Under: Chemistry

59 16096

Q:

The reduction potential of hydrogen half-cell will be negative if :
(1) $P (H_{2})$ = 2 atm and [H+] = 2.0 M
(2) $P (H_{2})$ = 1 atm and [H+] = 2.0 M
(3) $P (H_{2})$ = 1 atm and [H+] = 1.0 M
(4) $P (H_{2})$ = 2 atm and [H+] = 1.0 M

A) Option 1	B) Option 2
C) Option 3	D) Option 4

Answer & Explanation Answer: D) Option 4

Explanation:

$H^{+} - e^{-} \to \frac{1}{2} H_{2}$

Apply Nernst equation

$E = 0 - \frac{0.059}{1} \log (\frac{P H_{2}^{\frac{1}{2}}}{[H^{+}]})$

$E = - \frac{0.059}{1} \log (\frac{2^{\frac{1}{2}}}{1})$

Therefore E is Negative

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Filed Under: Chemistry
Exam Prep: AIEEE

26 16027

Q:

The Chinese traveller Hiuen Tsang, called the prince of pilgrims visited India during the reign of

A) Harsha	B) Chandragupta II
C) Dharampala	D) Devapala

Answer & Explanation Answer: A) Harsha

Explanation:

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Filed Under: Indian History

23 16020

Q:

If 3$8 = -50, 3$5 = -20 and 2$3 = -10, then find the value of 9$1 = ?

A) 10	B) -20
C) 90	D) 80

Answer & Explanation Answer: D) 80

Explanation:

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Filed Under: Verbal Reasoning - Mental Ability
Exam Prep: Bank Exams

1 16008

Q:

Who put up the most stiff resistance against the British in India?

A) The Rajputs	B) The Marathas
C) The Moghals	D) The Sikhs

Answer & Explanation Answer: B) The Marathas

Explanation:

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Filed Under: Indian Culture

332 16003

Q:

If (a+c+1) = 0, then find the value of $(a^{3} + c^{3} + 1 - 3 ac)$

A) -1	B) 1
C) 2	D) 0

Answer & Explanation Answer: D) 0

Explanation:

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Filed Under: Honours and Awards
Exam Prep: Bank Exams

0 16000

Q:

Mirage is an example of

A) Reflection of light & Refraction of light	B) Dispersion of light
C) Total Internal Reflection	D) Refraction of light & Total Internal Reflection of light

Answer & Explanation Answer: D) Refraction of light & Total Internal Reflection of light

Explanation:

A Mirage is a naturally occurring optical phenomenon in which light rays bend to produce a displaced image of distant objects or the sky.

It is caused due to Total internal Reflection.

It is an optical illusion observed in deserts or hot summer days due to which a person sees a pond of water some distance ahead of him in which the surrounding objects appear inverted.

Mirage_is_an_example_of1556276063.jpg image

How Mirage Forms::

1. The temperature of other layers of atmosphere goes on decreasing as we go up.
2. Therefore density and refractive index of air changes as one goes up.
3. Thus a ray of light,gets refracted more and more away from the normal.
4. At a particular angle when a ray of light exceeds critical angle, total internal reflection takes place and ray of light gets reflected in the same medium.
5. when the reflected ray reaches our eye, it appears as coming from tree or sky .
6. Hence the inverted image of tree creates an impression from a pond of water.

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Filed Under: Physics
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Bank PO , Bank Clerk , Analyst

49 15983

Q:

At which city the 10th South Asia Economic Summit (SAES) was held in November 2017?

A) Dhaka	B) Kathmandu
C) Colombo	D) Hyderabad

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