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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2 5458

Q:

Cellular respiration is best associated with the

A) microtubule	B) ribosome
C) Golgi apparatus	D) mitochondrion

Answer & Explanation Answer: D) mitochondrion

Explanation:

Cellular respiration is best associated with the organelle Mitochondrion.

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Filed Under: Biology
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5 5455

Q:

Sagarmatha friendship is between which two countries ?

A) Pakistan & China	B) Nepal & India
C) India & China	D) China & Nepal

Answer & Explanation Answer: D) China & Nepal

Explanation:

The first ever joint military exercise named 'Sagarmatha Friendship-2017' is all set between Nepal and China. Sagarmatha is the Nepali name for Mt Everest, which stands in between both the countries.

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Filed Under: General Awareness
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6 5453

Q:

The command to eliminate a table from a database is

A) REMOVE TABLE CUSTOMER;	B) UPDATE TABLE CUSTOMER;
C) DELETE TABLE CUSTOMER;	D) DROP TABLE CUSTOMER;

Answer & Explanation Answer: D) DROP TABLE CUSTOMER;

Explanation:

The SQL DROP TABLE statement is used to remove a table definition and all data, indexes,...

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Filed Under: Database
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36 5452

Q:

Dilip Sardesai Award is awarded to the following cricketer

A) Zaheer Khan	B) Virat Kohli
C) Yuvaraj Singh	D) Rohit Sharma

Answer & Explanation Answer: D) Rohit Sharma

Explanation:

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Filed Under: Honours and Awards

4 5451

Q:

After the initial success of the Revolt of 1857, the objective for which the leaders of the Revolt worked was

A) to restore the former glory to the Mughal empire	B) to form a Federation of Indian States under the aegis of Bhadur Shah II
C) elimination of foreign rule and return of the old order	D) each leader wanted to establish his own power in his respective region

Answer & Explanation Answer: C) elimination of foreign rule and return of the old order

Explanation:

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Filed Under: Indian History

1 5450

Q:

Answer the Following Puzzle.

Number Puzzles Questions and Answers

A) 5	B) 7
C) 9	D) 2

Answer & Explanation Answer: D) 2

Explanation:

Starting with the 10 at the top, one set of numbers increases by 3 each time, written in alternate boxes as you move down the diagram, and the other set of numbers decreases by 2,written in the boxes remaining

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Q:

The world's largest river is the......

A) The Amazon	B) The Brahmaputra
C) The Mississippi and Missouri	D) The Nile

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