Q:

Which of the following statement is true?

A) Cohesion is the OO principle most closely associated with hiding implementation details	B) Cohesion is the OO principle most closely associated with making sure that classes know about other classes only through their APIs
C) Cohesion is the OO principle most closely associated with making sure that a class is designed with a single, well-focused purpose	D) None

Answer & Explanation Answer: C) Cohesion is the OO principle most closely associated with making sure that a class is designed with a single, well-focused purpose

Explanation:

A refers to encapsulation, B refers to coupling

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Filed Under: Programming

4 15192

Q:

An object is placed at the centre of curvature of a concave mirror. Its image is formed at

A) a point beyond centre of curvature	B) a point between focus and centre of curvature
C) the centre of curvature	D) the focus

Answer & Explanation Answer: B) a point between focus and centre of curvature

Explanation:

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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
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Q:

Rearrange the parts of the sentence in correct order.

North India

P : needs a more holistic solution

Q : to the toxic air that residents

R : breathe at the onset of winter

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

Answer & Explanation Answer: B) PQR

Explanation:

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Q:

In which of the following, functional group isomerism is not possible?

A) Alcohols	B) Aldehydes
C) Alkyl halides	D) Cyanides

Answer & Explanation Answer: C) Alkyl halides

Explanation:

The haloalkanes (also known as halogenoalkanes or alkyl halides) are a group of chemical compounds derived from alkanes containing one or more halogens.Halogens can’t form more than one bond in the context of common organic compounds and can’t form multiple bonds to carbon.

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Filed Under: Chemistry
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Q:

Which of the following virus overtake computer system, when it boots and destroy information ?

A) System infectors	B) Trojan
C) Stealth virus	D) Boot infectors

Answer & Explanation Answer: C) Stealth virus

Explanation:

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51 15141

Q:

What were the watchwords for French Revolution?

Answer

Liberty , Equality and Fraterenity

Workspace

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Subject: World History

58 15131

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
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