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Q:

Consider the following constituent gases of the atmosphere :

1. Argon

2. Neon

3. Helium

4.Ceirbon dioxide

Which one of the following is the correct ascending sequence of the above gases in terms of the volume percentage?

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

Explanation:
Composition of Dry Air (Substance, % by volume)
Nitrogen, N2 78.08
Oxygen, O2
20.95
Argon, Ar 0.93
Carbon dioxide, CO2 0.033
Neon, Ne 0.0018
Helium, He 0.00052
Methane, CH4 0.0002
Krypton, Kr 0.00011
Dinitrogen oxide, N2O 0.00005
Hydrogen, H2 0.00005
Ozone, O3 0.000001
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Filed Under: Chemistry
Exam Prep: Bank Exams

0 43373
Q:

Milk of Magnesia is used as a 

 

A) Laxative  B) Pain killer 
C) Sedative  D) Antibiotic
 
Answer & Explanation Answer: A) Laxative 

Explanation:
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Filed Under: Chemistry
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0 43365
Q:

Which of the following statements are CORRECT?

I. Esters are sweet smelling substance.
II Esters are used in making perfumes.
III. Functional group of ester is R-O-RꞋ.

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: A) Only I and II

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

0 43328
Q:

Out of all known elements, the minimum number is of ______.

 

A) Metals   B) Non-metals  
C) Metalloids D) No option is correct
 
Answer & Explanation Answer: C) Metalloids

Explanation:
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Filed Under: Chemistry
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0 43322
Q:

Which type of reaction occurs when carbon burns in oxygen to give carbo dioxide?

 

A) Addition reaction B) Substition reaction
C) Combustion reaction D) Decomposition reaction
 
Answer & Explanation Answer: C) Combustion reaction

Explanation:
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Filed Under: Chemistry
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0 43288
Q:

Plants of which group are predominantly aquatic?

 

A) Thallophyta B) Bryophyta
C) Pteridophyta   D) No option is correct
 
Answer & Explanation Answer: A) Thallophyta

Explanation:
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Filed Under: Biology
Exam Prep: Bank Exams

2 43279
Q:

DRDL stands for

A) Defence Research and Development Laboratory B) Department of Research and Development Laboratory
C) Differential Research and Documentation Laboratory D) None of the above
 
Answer & Explanation Answer: A) Defence Research and Development Laboratory

Explanation:
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Filed Under: General Awareness

377 43259
Q:

What is 12 S of the Z?

Answer

12 S of Z represents 12 Signs of the Zodiac. 


It is similar to the  


1. 52 W in a Y        -  52 weeks in a year  


2. 3 H in a C          -  3 Hands in a Clock  


3. 3600 S in an H   -  3600 Seconds in an Hour 


4. 5 O in the W      -   5 Oceans in the World

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