Sawaal

  Questions

Popular Latest Rated
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.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

2 4914
Q:

Who said that " Man is a political animal" ?

A) Aristotle B) Karl Marx
C) Lenin D) Plato
 
Answer & Explanation Answer: A) Aristotle

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: World History

10 4913
Q:

CPU speed of a personal computer is

A) 1 MIPS B) 100 KIPS
C) 32 KIPS D) 32 MIPS
 
Answer & Explanation Answer: C) 32 KIPS

Explanation:

Instructions per second (IPS) is a measure of a computer's processor speed. CPU speed of a personal computer is 32 KIPS (Kilo Instructions per second).

Report Error

View Answer Report Error Discuss

Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer , Network Engineer , Project Manager

5 4913
Q:

In which Ocean is the Christmas Island located?

A) Pacific Ocean B) Indian Ocean
C) Arctic Ocean D) Antarctic Ocean
 
Answer & Explanation Answer: B) Indian Ocean

Explanation:

It is located in Indian Ocean

Report Error

View Answer Report Error Discuss

Filed Under: World Geography

3 4911
Q:

The Cholas were the only known rulers in the history of india to have undertaken successful overseas naval expeditions. Who of the following Chola rulers successfully invaded Laccadives, Maldives, Sri Lanka and Sumatra?

A) Parantaka - I B) Rajaraja - I
C) Rajendra - I D) Both (b) and (c)
 
Answer & Explanation Answer: C) Rajendra - I

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian History

3 4908
Q:

Where would you find Oraon, Munda, Santhal, Gonds and Asurs?

A) Chhattishgarh B) Andhra Pradesh
C) Maharashtra D) Jharkhand
 
Answer & Explanation Answer: D) Jharkhand

Explanation:

These tribes are also found in West Bengal.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography

12 4906
Q:

 To drop a column that is used as a foreign key, first:

A) drop the primary key. B) drop the table containing the foreign key..
C) drop the foreign key constraint. D) All of the above must be done.
 
Answer & Explanation Answer: C) drop the foreign key constraint.

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Database

0 4905
Q:

What is the India’s GDP growth predict for Financial Year 2017-18, according to the Economic Survey of India (ESI) 2016-17 ?

A) 6.25 % to 7.5% B) 6.55 % to 7.25%
C) 6.55 % to 7.5% D) 6.75 % to 7.5%
 
Answer & Explanation Answer: D) 6.75 % to 7.5%

Explanation:

The Economic Survey for 2016-17, which is recently tabled by Finance Minister Arun Jaitley in Parliament, has expected India’s GDP growth estimation to be in 6.75 % to 7.5% for Financial Year 2017-18.

 

Report Error

View Answer Report Error Discuss

Filed Under: Indian Economy

13 4905