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 national parks of India is also a UNESCO world heritage site ?

A) Keoladeo national park B) Jim Corbett national park
C) Namdapha national park D) Keibul Lamjao national park
 
Answer & Explanation Answer: A) Keoladeo national park

Explanation:
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Q:

Who amongst the following is the author of the book " We the People"?

A) Morarji Desai B) Khushwant Singh
C) Arun Gandhi D) Nani Palkhivala
 
Answer & Explanation Answer: D) Nani Palkhivala

Explanation:
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Q:

Is DRAM Volatile or Nonvolatile?

Answer

DRAM is a Volatile random-access memory (VRAM).


 


Volatile random-access memory (VRAM) is random-access memory that retains its information when power is turned on.


Examples of volatile memory are primary storage (typically dynamic RAM, DRAM), and fast CPU cache memory (typically static RAM, SRAM, which is fast but energy-consuming and offer lower memory capacity per area unit than DRAM).


Non-volatile random-access memory (NVRAM) is random-access memory that retains its information when power is turned off.

Examples of non-volatile memory are flash memory (used as secondary memory) and ROM, PROM, EPROM and EEPROM memory (used for storing firmware such as BIOS). 

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Q:

Which one of the following ports is located on estuary?

A) Kandala B) Marmagao
C) Kolkata-Haldia D) Tuticorin
 
Answer & Explanation Answer: B) Marmagao

Explanation:

Kandla is Tidal port, Kolkata Haldia is  a  riverine  port,  Tuticorin  is  a river  port,  Marmagao  is  in  Goa,  is situated   on   estuary   on   eastern coast of India. Delta formation and estuary    formation    take    place mostly  on  western  coast  and  Goa is in western coast. 

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Q:

Air is 

A) compound B) element
C) mixture D) solution
 
Answer & Explanation Answer: C) mixture

Explanation:
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Q:

IP address of a packet is normally analyzed by

A) Modem B) Router
C) Hub D) CPU
 
Answer & Explanation Answer: B) Router

Explanation:

The IP address of a packet is normally analyzed by Router.

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Q:

Which of the following countries was associated with Khmer Rouge?

A) Combodia B) Vietnam
C) Thailand D) Burma
 
Answer & Explanation Answer: A) Combodia

Explanation:

In 1975, a party called khmer Rouge had taken control of Cambodia under the leader ship of Pol Pot. The Government of Pol pot established a regime of terror in Cambodia and started following a policy of genocide against its own people.

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