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Q:

Fedaration cup,World cup, Allwyn international trophy and challenge cup are awarded to winners of

A) Tennis B) Volleyball
C) Basketball D) Cricket
 
Answer & Explanation Answer: B) Volleyball

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Filed Under: General Awareness

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Q:

Which country has "This is the root of all evil" written on its coins?

A) Italy B) Vatican City
C) Cuba D) Russia
 
Answer & Explanation Answer: B) Vatican City

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Q:

Generally unemployment in a developing country takes place because of ___________.

 

A) lack of complementary factors of production B) seasonal factors
C) lack of effective demand D) switch over from one job to another
 
Answer & Explanation Answer: A) lack of complementary factors of production

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Filed Under: Indian Economy
Exam Prep: Bank Exams

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Q:

‘Asom Mala’ programme has been launched in which Indian state/UT?

 

A) Arunachal Pradesh B) Bihar
C) Sikkim D) Assam
 
Answer & Explanation Answer: D) Assam

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Filed Under: Indian Geography
Exam Prep: Bank Exams

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Q:

Sharad Joshi Samman is awarded for

A) Social Service B) Trade Union activity
C) Cartoon D) Satire and essay
 
Answer & Explanation Answer: D) Satire and essay

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Filed Under: Honours and Awards

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Q:

During which decade did the population of India record a negative growth rate 

A) 1911 - 21 B) 1921 - 31
C) 1931 - 41 D) 1941 -51
 
Answer & Explanation Answer: A) 1911 - 21

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Filed Under: Indian Economy

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Q:

Join Our Whatsapp Group For Competitive Exams - Sawaal

Answer

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162 22109
Q:

Permanent Hardness of water can be removed by adding

A) Bleaching powder B) Chlorine
C) Wasshing soda D) Potassium permanganate
 
Answer & Explanation Answer: C) Wasshing soda

Explanation:

Hardness can be removed by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.

 

Hardness in water is caused by dissolved magnesium ions and calcium ions. These can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds. This can happen, for example, when rainwater flows over these rocks on its way to a reservoir.

 

Hardness in water is of two types. They are :

1. Temporary hardness

2. Permanent hardness

 

1. Temporary hardness:: Temporary hardness is caused by dissolved calcium hydrogen carbonate.


2. Permanent hardness:: Permanent hardness is caused by dissolved calcium sulfate. Unlike temporary hardness, it is not removed by boiling the water.

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

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