Questions

Q:

Which species is a conjugate acid of OH- ?

 

A) H+ B) O2- 
C) OH D) H2O
 
Answer & Explanation Answer: D) H2O

Explanation:
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Q:

Which among the following is NOT a function of RBI? 

A) Serve as debt manager to other banks B) To work as monetary authority and implement its Monetary Policy
C) Serve as banker to central and state governments D) To serve as issuer of bank notes
 
Answer & Explanation Answer: A) Serve as debt manager to other banks

Explanation:

Serve as debt manager to other banks is not a function of RBI Bank.

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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:

Who has won the Hero Indian Golf Open 2017 ?

A) Gavin Green B) S.S.P. Chawrasia
C) Anirban Lahiri D) Scott Jamieson
 
Answer & Explanation Answer: B) S.S.P. Chawrasia

Explanation:

Chawrasia, became the first Indian to successfully defend a European Tour title and the first player to win their first four events in their home country.

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Q:

Settled agriculture was first seen in China around

A) 6000 BC B) 8000 BC
C) 3000 BC D) 15000 BC
 
Answer & Explanation Answer: A) 6000 BC

Explanation:

Settled agriculture was first seen in China around 6000 BC. The crops grown at this time were rice and millet.

Beginning in about 618 BC with classical millet agriculture, China's development of farming over the course of its history has played a key role in supporting the growth of what is now the largest population in the world.

 

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Q:

For an inferior good demand falls when _________.

 

A) Piece rise   B) Price falls  
C) Income rise   D) Income falls  
 
Answer & Explanation Answer: C) Income rise  

Explanation:
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Q:

What is the gram formula mass of K2CO3?

A) 147 B) 138
C) 129 D) 116
 
Answer & Explanation Answer: B) 138

Explanation:

The gram formula mass of a compound is nothing but the molar mass.

The molar mass of K2CO3 (Potassium Carbonate) is given by

Atomic weights of individual elements are

 

K (Potassium) = 39 g

C (Carbon) = 12 g

O (Oxygen) = 16 g

 

Hence, that of K2CO3 = 39(2) + 12 + 16(3)

= 78 + 12 + 48

= 138.

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Q:

In Which three languages is the Rosetta Stone written?

Answer

Greek, demotic Egyptian and hieroglyphics.

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Subject: World History

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