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 15293

Q:

Select the synonym of

to concoct

A) to obliterate	B) to contrive
C) to decimate	D) to pulverize

Answer & Explanation Answer: B) to contrive

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 15290

Q:

Improve the given sentence if necessary.

I regret for using objectionable words against a man so mighty.

A) repent for	B) sorry for
C) regret	D) No improvement

Answer & Explanation Answer: C) regret

Explanation:

‘Regret for’ needs to be replaced with ‘regret’ to make the sentence grammatically correct. This is because ‘regret’ is not followed by a preposition. Thus, the correct formation would be, ‘I regret using objectionable words against a man so mighty’.

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Filed Under: English
Exam Prep: Bank Exams

0 15288

Q:

Rearrange the parts of the sentence in correct order.

But while the defeat made

P-as it was no longer in currency.
Q-news, the issue on which
R-it was based failed to resonate

A) RPQ	B) RQP
C) PQR	D) QRP

Answer & Explanation Answer: D) QRP

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 15285

Q:

The unit of momentum is

A) Kgms2	B) Kgms-1
C) Kgms	D) Kgms-2

Answer & Explanation Answer: B) Kgms-1

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

0 15280

Q:

Improve the bracketed part of the sentence.

Even after putting his body and soul, if he fails to achieve victory he will not have (any authority above others).

A) any authority on others	B) any authority over others
C) any authority to others	D) No improvement

Answer & Explanation Answer: B) any authority over others

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 15251

Q:

Improve the bracketed part of the sentence.

You and I must understand (one another), and that too without delay.

A) one other	B) with one another
C) each another	D) no improvement

Answer & Explanation Answer: D) no improvement

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 15235

Q:

Choose the correctly spelt word

The school alumni gathering put us in a mood.

A) Remniscent	B) Reminisent
C) Reminiscent	D) Reminicent

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