Questions

Q:

The wavelength of a wave is the distance between

A) Crest and Trough B) Crest and Crest
C) Trough and Trough D) Both B & C
 
Answer & Explanation Answer: D) Both B & C

Explanation:

Distance between two Consecutive Crests or two Consecutive Troughs is called Wavelength. But the distance between crest and adjacent trough is half the wavelength.

That is the distance between adjacent crest and trough is called Half the wavelength.

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Q:

Iron rusting, chemical or physical change

A) Chemical B) Physical
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Chemical

Explanation:

In rusting the Iron ore make a chemical reaction with the oxygen in the presence of water and environmental or atmospheric moisture to produce an Iron oxide. Iron oxide is otherwise called as rust.


The rusting of iron is a chemical change because it is two substances reacting together to make a new substance.

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Q:

Which of these rules are applicable for naming covalent compounds?

A) nonmetal name + nonmetal name + suffix –ide B) nonmetal name + nonmetal name + suffix –ite
C) metal name + nonmetal name + suffix –ide D) metal name + nonmetal name + suffix –ite
 
Answer & Explanation Answer: C) metal name + nonmetal name + suffix –ide

Explanation:

Simple covalent compounds are generally named by using prefixes metal name + nonmetal name + suffix –ide to indicate how many atoms of each element are shown in the formula. Also, the ending of the last (most negative) element is changed to -ide. The prefixes used are mono-, di-, tri-, tetra-, penta-, hexa-, and so forth.

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Q:

FIFA 2018 World Cup won by

A) Croatia B) Brazil
C) Argentina D) France
 
Answer & Explanation Answer: D) France

Explanation:

France national football team has won the FIFA 2018 - an international football tournament contested by the men's national teams of the member associations of FIFA once every four years. It took place in Russia from 14 June to 15 July 2018.

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Q:

My son was playing with a book and tore out pages 6, 7, 51, 52, 97, and 98. How many pages were torn out?

Answer

Total number pages torn out are 3.


6,7 as one page


51,52 as one page


97,98 as one page

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Subject: Logic Puzzles Exam Prep: Bank Exams

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Q:

What is the difference between microkernel and macro kernel?

Answer

Micro-kernal : A micro-kernel is a minimal operating system that performs only the essential functions of an operating system. All other operating system functions are performed by system processes.


Monolithic : A monolithic operating system is one where all operating system code is in a single executable image and all operating system code runs in system mode.

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Q:

Country's first unmanned tank, rolls out from the Chennai lab. What is its name ?

A) Muntra B) Lira
C) Santra D) Myntra
 
Answer & Explanation Answer: A) Muntra

Explanation:

Defence Research and Development Organisation (DRDO) has developed an unmanned, remotely operated tank which has three variants - surveillance, mine detection and reconnaissance in areas with nuclear and bio threats. It is called Muntra. 

 
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Q:

A Step-Up Transformer Increases

A) Power B) Current
C) Frequency D) Voltage
 
Answer & Explanation Answer: D) Voltage

Explanation:

A transformer that increases voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a Step-Up Transformer.

Conversely, a transformer designed to do just the opposite is called a Step-Down Transformer. 

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