Questions

Q:

What is the bond order of O2?

A) 1.5 B) 2
C) 2.5 D) 1
 
Answer & Explanation Answer: B) 2

Explanation:

The number of bonds between a pair of atoms is called the bond order.

Bond orders can be calculated from Lewis structures, which are the heart of the valence-bond model. Oxygen, for example, has a bond order of two.

Structure

When there is more than one Lewis structure for a molecule, the bond order is an average of these structures. The bond order in sulfur dioxide, for example, is 1.5  the average of an S-O single bond in one Lewis structure and an S=O double bond in the other.

Structures

In molecular orbital theory, we calculate bond orders by assuming that two electrons in a bonding molecular orbital contribute one net bond and that two electrons in an antibonding molecular orbital cancel the effect of one bond. We can calculate the bond order in the O2 molecule by noting that there are eight valence electrons in bonding molecular orbitals and four valence electrons in antibonding molecular orbitals in the electron configuration of this molecule. Thus, the bond order is two.

Equation

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Q:

Which of the following rivers does not flow into the Arabian Sea?

A) Kaveri B) Tapati
C) Narmada D) Periyar
 
Answer & Explanation Answer: A) Kaveri

Explanation:
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Q:

At what temperature do the Fahrenheit and celcius scales give the same reading?

A) 212 degrees B) 32 degreees
C) -40 degreees D) 0 degreees
 
Answer & Explanation Answer: C) -40 degreees

Explanation:

We want the temperature when F=C.

We know that, F = C x 95 + 32

So substituting C For F, we have C = -40o

Therefore,  C = -40. 

Thus when C = -40, we have C = F

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Q:

Cache memory is a form of ROM.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

The given sentence Cache memory is a form of ROM is FALSE. Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access more quickly than it can access regular random access memory (RAM).

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Q:

Name the first Muslim woman to receive the Nobel Prize in the world

A) Phil Ersa B) Shirin Ebadi
C) Lakpa Sherpa D) Irine Zubeida
 
Answer & Explanation Answer: B) Shirin Ebadi

Explanation:
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Q:

Who amongst the following is known as the Light of Asia

A) Jesus Christ B) Lord Buddha
C) Prophet Mohammad D) Zarathustra
 
Answer & Explanation Answer: B) Lord Buddha

Explanation:
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Q:

Great Mosque of Cordoba is located in which country?

A) Colombia B) Spain
C) Argentina D) Chile
 
Answer & Explanation Answer: B) Spain

Explanation:
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Q:

The island which became the first island in the world fully energy self-sufficient through combined water and wind power

Answer

EI Hierro

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