Questions

Q:

Under which conditions are gases most soluble in water?

A) low pressure and low temperature B) low pressure and high temperature
C) high pressure and low temperature D) high pressure and high temperature
 
Answer & Explanation Answer: C) high pressure and low temperature

Explanation:

Henry's Law tells that the solubility of a gas is directly proportional to the partial pressure of the gas above the solvent. Hence under high pressure, more gas is dissolved.

Also that Henry's Law involves a constant which is temperature-dependent. Under high temperatures, less gas is dissolved whereas under low temperatures, more gas is dissolved.

 

For Example ::  

You can think of a can of soda. The contents are under pressure and if you shake the can before opening, the soda fizzes out all over as you open it. So the higher the pressure, the more gas or more CO2 can be dissolved in the drink.

Eliminate choices 1 and 2. Now focus on the temperature. Soda goes flat (loses carbonation or gas) as it warms up. Soda is usually served cold because more of the carbonation or CO2 stays in the drink when the soda is cold.

 

Hence, in high pressure and low temperature conditions gases are most soluble in water.

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

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Q:

Who is the 14th President of India ?

A) Meira Kumar B) Sreedharan
C) Ram Nath Kovind D) Vaidyanathan
 
Answer & Explanation Answer: C) Ram Nath Kovind

Explanation:

BJP-led NDA's presidential candidate Ram Nath Kovind registered an emphatic win over his rival and Opposition candidate Meira Kumar. Succeeding Pranab Mukherjee, Kovind sworn in as the 14th president of India on July 25, 2017.

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Filed Under: Indian Politics
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Q:

The number of members included in the Constitution Drafting Committee was

A) Seven B) Nine
C) Eleven D) Thirteen
 
Answer & Explanation Answer: A) Seven

Explanation:
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Filed Under: Indian Politics

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Q:

Improve the bracketed part of the sentence.

 

One minute they're all sweet (but) caring and the next minute they stab you in the back.

 

A) if B) and
C) only D) nor
 
Answer & Explanation Answer: B) and

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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Q:

Firewalls are used to protect against

A) Virus Attacks B) Unauthorized Access
C) Data Driven Attacks D) Fire Attacks
 
Answer & Explanation Answer: B) Unauthorized Access

Explanation:

Firewalls are used to protect against Unauthorized Access.

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Filed Under: Computer
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Job Role: Analyst , Bank Clerk , Bank PO

10 4634
Q:

Which one of the following figures represents the following relationship:

Birds, Parrots, Bats

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:
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Q:

In what US state does the Mississippi River begin?

Answer

Minnesota

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Subject: World Geography

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Q:

What is called the descendants of Dutch and Portuguese colonies in Sri Lanka?

 

A) Sinhalese B) Tamil
C) Burgher D) Vedda
 
Answer & Explanation Answer: C) Burgher

Explanation:
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Filed Under: General Awareness
Exam Prep: Bank Exams

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