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

25 22632

Q:

What value should come in place of the question mark (?) in the following question?

$264 \div \sqrt{576} + 11^{2} + 12 = ?^{2}$

A) 44	B) 12
C) 15	D) 14

Answer & Explanation Answer: B) 12

Explanation:
264 / 24 + 121 + 12 = (?)^2 11 + 121 + 12 = (?)^2 144 = (?)^2 (?) = 12

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

0 22627

Q:

Against which team did Virender Sehwag make his one day international debut

A) New Zealand	B) Sri lanka
C) Pakistan	D) South Africa

Answer & Explanation Answer: C) Pakistan

Explanation:

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Filed Under: Sports

109 22619

Q:

Who founded in Pataliputra

A) Udayin	B) Ashoka
C) Bimbisar	D) Mahapadmananda

Answer & Explanation Answer: A) Udayin

Explanation:

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Filed Under: Indian History

66 22559

Q:

Chinese traveller Hiuen-Tsang studied at the University of

A) Taxila	B) Vikramshila
C) Magadh	D) Nalanda

Answer & Explanation Answer: D) Nalanda

Explanation:

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Filed Under: Indian History

49 22535

Q:

Join Our Whatsapp Group For Competitive Exams - Sawaal

Answer

In this Whatsapp group for competitive exams, you can get daily updates about Aptitude, Reasoning, General Knowledge, Current Affairs, Puzzles, Certfications, Interviews, Exams Schedules, etc... In addition you can ask your questions to get answers with tricks and tips.

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Join our Best General Knowledge (GK) Whatsapp Group here.

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Subject: General Awareness Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Software Architect , Project Manager , Network Engineer , IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

164 22520

Q:

What is page cannibalizing?

Answer

Page swapping or page replacements are called page cannibalizing.

Workspace

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Subject: Operating Systems

37 22479

Q:

USB is which type of storage device?

A) Tertiary	B) Secondary
C) Primary	D) Auxillary

Answer & Explanation Answer: B) Secondary

Explanation:

USB - Universal Serial Bus is a secondary type of storage device which is used in all computers, laptops, mobiles...

USB1533034422.jpg image

It is a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a keychain.

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

58 22470

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