Exams


Q:

Which two atoms form an ionic bond?

Answer

Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions.


In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.


 


Example ::


One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

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Subject: Chemistry Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

The Mesoamerican leader Pakal, The great was

A) the king of a Maya city-state. B) the ruler of a Zapotec state.
C) the emperor of the Aztec people. D) the head of the Inca religion.
 
Answer & Explanation Answer: A) the king of a Maya city-state.

Explanation:

The Mesoamerican leader Pakal, The great was the king of a Maya city-state in the history.

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Q:

If a merchant offers a discount of 4% on the list price, then she makes a loss of 10%. What % profit or % loss will she make if she sells at a discount of 20% of the list price?

A) 25 percent loss B) 4 percent loss
C) 50 percent profit D) 26 percent profit
 
Answer & Explanation Answer: A) 25 percent loss

Explanation:
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Filed Under: Profit and Loss
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Q:

Determine which of the given conclusions logically follows from the given statements, disregarding commonly known facts.

Statements:
Some actors are singers.
All the singers are dancers.

Conclusions:
(i) Some actors are dancers.
(ii) No singer is an actor.

A) Neither (i) nor (ii) follows B) Either (i) or (ii) follows
C) Only conclusion (ii) follows D) Only conclusion (i) follows
 
Answer & Explanation Answer: D) Only conclusion (i) follows

Explanation:

Some + All = Some

and the common word in two statements is Singers will not be used.

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Filed Under: Verification of Truth of the statement
Exam Prep: CAT
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Q:

In a certain code language, "MATCH" is written as "NYWYM" and "BOARD" is written as "CMDNI". How is "PRINT" written in that code language?

A) YJLPQ B) ZIMOR
C) ROMIZ D) QPLJY
 
Answer & Explanation Answer: D) QPLJY

Explanation:
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Filed Under: Coding and Decoding
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Q:

Who became the first Indian bowler to take a hat-trick wicket in a WorldCup match?

A) Harbhjan Singh B) Irfan Pathan
C) Chetan Sharma D) Mohammad Shami
 
Answer & Explanation Answer: C) Chetan Sharma

Explanation:

Chetan Sharma was the first Indian to pick a World Cup hat-trick, doing so against New Zealand in 1987. Mohammad Shami achieved the feat in the match against Afghanistan on June 22, 2019.

 

Chetan_Sharma1561369355.jpg image

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Filed Under: Sports
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Q:

Exercise improves memory and learning.

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

Explanation:

Exercise can boost your memory and thinking skills by improvising alertness, attention and motivation.

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Subject: General Science
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Q:

Salts and sugars work to preserve foods by creating a

A) Hypertonic environment B) Lower pH
C) Depletion of nutrients D) Lower osmotic pressure
 
Answer & Explanation Answer: A) Hypertonic environment

Explanation:

Salts and sugars work to preserve foods by creating a Hypertonic environment.

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Filed Under: Biology
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