Questions

Q:

In addition to nitric acid, another acid which may render iron passive is 

A) acetic acid B) oxalic acid
C) chromic acid D) citric acid
 
Answer & Explanation Answer: C) chromic acid

Explanation:

Passivity of iron is due to formation of an extremely thin and impervious film of ferrosoferric oxide Fe3O4on the surface of iron. Chromic acid, being a powerful oxidising agent (like nitric acid ) renders iron passive. 

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Filed Under: Chemistry

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Q:

The main buffer system of the human blood is

A) H2CO3 B) H2SO4
C) CO2 D) O3
 
Answer & Explanation Answer: A) H2CO3

Explanation:

the_main_buffer_system_of_the_human_blood_is1556690852.jpg image

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

Who is the author of the book ' The Goldfinch'

Answer

Donna Tratt

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Q:

Which track and field star overcame childhood polio to became one of the greatest athlets of her time

A) Wilma Rudolph B) Gail devers
C) Florence Griffith Joyner D) Jackie Rrobinson
 
Answer & Explanation Answer: A) Wilma Rudolph

Explanation:
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Filed Under: Sports

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Q:

Indus Valley Civilization is called the protohistoric civilization because its people knew 

A) art B) writing
C) copper D) pottery
 
Answer & Explanation Answer: B) writing

Explanation:
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Filed Under: General Awareness

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Q:

When the demand of a commodity also depends upon prices of the substitutes & complementaries or relative prices then it is called

A) Income-Demand B) Price-demand
C) Cross-Demand D) None
 
Answer & Explanation Answer: C) Cross-Demand

Explanation:
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Filed Under: Business Awareness
Exam Prep: Bank Exams , CAT
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Q:

When did Bangladesh become an independent parliamentary democracy?

A) December, 1971 B) January, 1972
C) March, 1972 D) February, 1972
 
Answer & Explanation Answer: B) January, 1972

Explanation:
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Filed Under: World History
Exam Prep: Bank Exams

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Q:

Which Indian state is having the longest coastline ?

Answer



Gujrat


 

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