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Q:

Ketchup stored in a tin can may lead to chemical contamination.

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

Explanation:

The given statement is True.


Ketchup is acidic, having a pH of 3.9. The acidic component, acetic acid, will react with the metal tin. This reaction will result in a metal acetate that will contaminate the ketchup.


 


Hence, The acetic acid in the ketchup will react with the metal tin, forming a metal acetate that will pass into the ketchup which leads to its contamination.

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

Name the mineral used to produce artificial diamonds.

Answer

Graphite

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Subject: General Science

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Q:

Who is the author of the book "Death Of President"

A) Amitabha Ghosh B) Shekhspear
C) W. Marchent D) None of the above
 
Answer & Explanation Answer: C) W. Marchent

Explanation:

W. Marchent is the author of Death Of President

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Filed Under: Books and Authors

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Q:

................mixtures are used for making a glass

A) Quartz and Mica B) Salt and Quartz
C) Sand and Salt D) Sand and Silicates
 
Answer & Explanation Answer: D) Sand and Silicates

Explanation:
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Filed Under: General Science

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Q:

The first martyrdom in Sikh history in the reign of Jehangir was of

A) Guru Ram Das B) Guru Teg Bahadur
C) Guru Angad D) Guru Arjan
 
Answer & Explanation Answer: D) Guru Arjan

Explanation:
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Filed Under: Indian History

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Q:

Antigens 'A' and 'B' are absent in persons belong to blood group

A) 'O' B) 'A'
C) 'B' D) 'AB'
 
Answer & Explanation Answer: A) 'O'

Explanation:
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Filed Under: Biology

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Q:

Tribes belonging to which one of the following groups earn their livelihood through food - gathering and hunting?

A) Bushman, Pigmy and Eskimo B) Masai, Kirghiz, and Boro
C) Pigmy, Eskimo and Kirghiz D) Boro, Bushman, and Masai
 
Answer & Explanation Answer: A) Bushman, Pigmy and Eskimo

Explanation:
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Filed Under: World Geography

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Q:

In which layer is the pressure the highest?

A) Ionosphere B) Stratosphere
C) Troposphere D) Inner core
 
Answer & Explanation Answer: D) Inner core

Explanation:

"Pressure" is the ratio of mass to area. So, for any given area, the one with more mass pressing on it will experience a higher pressure.

 

As you go more deeply into the atmosphere OR earth itself, you are putting more and more mass over you. For the same unit area therefore, the pressure, (mass/area) increases.

 

Hence, the lowest layer will always have the highest pressure i.e, inner core.

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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