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Q:

Which reaction occurs spontaneously?

A) Cl2(g) + 2NaF(aq)--> F2(g) + 2NaCl(aq) B) I2(s) + 2NaF(aq)--> F2(g) + 2NaI(aq)
C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq) D) I2(s) + 2NaBr(aq)--> Br2(l) + 2NaI(aq)
 
Answer & Explanation Answer: C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq)

Explanation:

In this chemical reaction chlorine change oxidation number from 0 to -1 (reduction) and bromine change oxidation number from -1 to 0 (oxidation).

Chlorine is stronger oxidation reagent than bromine.

In VIIA or group 17 (halogen elements) there are six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and tennessin(Ts).

They have high electronegativity because they have seven valence electrons in their outermost energy level, so they can gain an electron to have the octet rule.  

Going down in the group, element are weaker oxidazing reagent and less reactive.

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Filed Under: Chemistry
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Q:

The first space rocket to hit the moon was 

A) Apollo II B) Luna 9
C) Lunik 2 D) Zond 5
 
Answer & Explanation Answer: A) Apollo II

Explanation:
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Filed Under: General Awareness

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Q:

The Buddhist  Doctrines were written in 

A) Sanskrit B) Pali
C) Tibetan D) Not written in any language but orally transnitted
 
Answer & Explanation Answer: B) Pali

Explanation:
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Filed Under: Indian History

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Q:

Explain hospitality in terms of hotel industry ?

Answer

Hospitality actually means, taking care of guests in the best possible way.


Organizing, providing services and looking care after guests is included in it.


It means friendly and generous treatment of guests. 


Hospitality industry includes all companies involved in providing services for guests. They provide more mental satisfaction than tangible objects.

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Subject: Hospitality

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Q:

Find the Missing Number Puzzle for the Given

number011517998001.jpg image

A) 8 B) 16
C) 9 D) 12
 
Answer & Explanation Answer: C) 9

Explanation:

Given

 

6 = 3 => Number of letters in SIX = 3

 

12 = 6 => Number of letters in TWELVE = 6

 

14 = 8 => Number of letters in FOURTEEN = 8

 

Similarly,

 

22 = 9 => Number of letters in TWENTY TWO = 9

 

 

 

 

 

Therefore, 22 = 9.

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Filed Under: Number Puzzles
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Q:

The universal donor belongs to blood group

A) A B) B
C) AB D) O
 
Answer & Explanation Answer: D) O

Explanation:

The persons with 'O' blood group do not have antigens in the red corpuscles. So that blood will not cause agglutination of corpuscles if mixed with any type of blood. So group 'O' persons are called universal donors.

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Filed Under: Biology

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Q:

As alcohol use continues, the voluntary motor system becomes impaired.

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

Explanation:
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Subject: Biology
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Q:

IF YOU HAVE ME, YOU WANT TO SHARE ME. IF YOU SHARE ME, YOU HAVEN'T GOT ME. WHAT AM I?

Answer

A Secret is what you want to share if you have with you. And if you share that secret with anyone, then secret will not be with you only.

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Subject: Word Puzzles Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
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