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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:

Renowned Businessmen, Mr. Deepak Parekh is primarily associated in the __________ sector.

A) Telecom B) Aviation
C) Banking D) Insurance
 
Answer & Explanation Answer: C) Banking

Explanation:
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Filed Under: Famous Personalities
Exam Prep: Bank Exams

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Q:

Which of the following is the largest phyllum in the animal kingdom in respect of number of species

A) Annalida B) Platyhelminthes
C) Chordata D) Arthropoda
 
Answer & Explanation Answer: D) Arthropoda

Explanation:
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Filed Under: Biology

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Q:

The schwann cell forms a myelin sheath around the

A) nodes of Ranvier B) dendrites
C) nucleus D) axon
 
Answer & Explanation Answer: D) axon

Explanation:

Schwann cells or neurolemmocytes are the cells in the peripheral nervous system that form the myelin sheath around a neuron's axon.

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Filed Under: Biology
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Q:

Telangana region represents one of the following types of vegetation?

A) Tropical deciduous B) Thorn
C) Tropical ever green D) Sub - tropical decidual
 
Answer & Explanation Answer: B) Thorn

Explanation:
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Filed Under: Indian Geography

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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

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Filed Under: Indian History

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Q:

Rearrange the parts of the sentence in correct order.

There must be more oversight

P-which this is done
Q-and much more accountability
R-in the manner in

 

A) RQP B) QRP
C) PRQ D) PQR
 
Answer & Explanation Answer: B) QRP

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Filed Under: English
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Q:

The tributary of Rriver Indus which flows through Himachal Pradesh is

A) Sutlej B) Beas
C) Ravi D) Hunza
 
Answer & Explanation Answer: A) Sutlej

Explanation:
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Filed Under: Indian Geography

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