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

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Q:

Janapav hill situated near Indore is the source of which river?

A) Tapi river	B) Chambal river
C) Mahi River	D) Mahanadi

Answer & Explanation Answer: B) Chambal river

Explanation:

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Filed Under: Indian Geography
Exam Prep: Bank Exams

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Q:

Select the antonym of

pejorative

A) rude	B) complimentary
C) derisive	D) cheeky

Answer & Explanation Answer: B) complimentary

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence.

The footballers (has been) arguing with the coach since morning.

A) was	B) had been
C) have been	D) no improvement

Answer & Explanation Answer: C) have been

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence

The good fortune of (my being) your disciple in my youth has greatly benefited me in my career.

A) my having been	B) myself being
C) being	D) no improvement

Answer & Explanation Answer: A) my having been

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence.

We (has finished) our lunch half an hour ago.

A) finished	B) will have finished
C) had finished	D) No improvement

Answer & Explanation Answer: A) finished

Explanation:

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Filed Under: English

0 15190

Q:

What were the watchwords for French Revolution?

Answer

Liberty , Equality and Fraterenity

Workspace

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Subject: World History

58 15189

Q:

Which of the following is an Autotroph?

A) Fish	B) Algae
C) Butterfly	D) Mushroom

Answer & Explanation Answer: B) Algae

Explanation:

Here from the above options, Algae is an Autotroph.

Autotrophs :

An Autotroph is also called as Producer, is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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