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 15190

Q:

Select the antonym of

frolic

A) drudgery	B) romp
C) antic	D) drollery

Answer & Explanation Answer: A) drudgery

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 15168

Q:

Select the antonym of

castigated

A) approve	B) rate
C) flay	D) drub

Answer & Explanation Answer: A) approve

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

4 15160

Q:

What were the watchwords for French Revolution?

Answer

Liberty , Equality and Fraterenity

Workspace

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Subject: World History

58 15133

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
Job Role: Analyst , Bank PO , IT Trainer

78 15133

Q:

What is called the small grasslands on the slopes of Lesser Himalayan range in Jammu and Kashmir?

A) Marg	B) Bugyal
C) Payar	D) Duar

Answer & Explanation Answer: A) Marg

Explanation:

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Filed Under: Indian Geography
Exam Prep: Bank Exams

4 15105

Q:

Improve the bracketed part of the sentence.

The Centre’s bid to dispel the pall of gloom over the economy (have been helped) in recent weeks by a rating.

A) had been help	B) has been helped
C) have been helping	D) No improvement

Answer & Explanation Answer: B) has been helped

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 15099

Q:

Tikka disease is related with the crop:

A) Musturd	B) Paddy
C) Ground nut	D) All of these

Answer & Explanation Answer: C) Ground nut

Explanation:

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Filed Under: Biology

117 15093

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