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Q:

What is the gram formula mass of K2CO3?

A) 147 B) 138
C) 129 D) 116
 
Answer & Explanation Answer: B) 138

Explanation:

The gram formula mass of a compound is nothing but the molar mass.

The molar mass of K2CO3 (Potassium Carbonate) is given by

Atomic weights of individual elements are

 

K (Potassium) = 39 g

C (Carbon) = 12 g

O (Oxygen) = 16 g

 

Hence, that of K2CO3 = 39(2) + 12 + 16(3)

= 78 + 12 + 48

= 138.

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Filed Under: Chemistry
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Q:

An image created to accompany words is called

A) A Heirogylph B) An Illustration
C) A Logo D) An Icon
 
Answer & Explanation Answer: B) An Illustration

Explanation:

An Illustration is a visual image created to accompany words to depict them.

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Filed Under: Computer
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Q:

Which organelle is the control center of a cell?

A) Nucleus B) Cytoplasm
C) Cell membrane D) endoplasmic reticulum
 
Answer & Explanation Answer: A) Nucleus

Explanation:

Nucleus serves as the control center for cell metabolism and reproduction.

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Filed Under: Biology
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Q:

Select the option that will correctly fit in the blank space in the following figure.

 



 

A) B B) D
C) A D) C
 
Answer & Explanation Answer: D) C

Explanation:
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Filed Under: Image Analysis
Exam Prep: Bank Exams

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Q:

The following questions are based on the information given below:

 

Out of a group of 60 students, 25 play Cricket, 30 play Football, 24 play Volleyball, 10 play Cricket and Football, 9 play Cricket and Volleyball, 12 play Volleyball and Football and 5 play all the three.

 

How many students play exactly two games?

 

 

A) 7 B) 13
C) 5 D) 16
 
Answer & Explanation Answer: D) 16

Explanation:
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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

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Q:

Best suited for areas subject to friction, the epithelial tissue is called as

A) transitional B) simple columnar
C) straited squamous D) areolar
 
Answer & Explanation Answer: C) straited squamous

Explanation:

The number of cell layers and cell types together give rise to 6 different types of epithelial tissue.


1. Simple squamous epithelia

2. Simple cuboidal epithelia

3. Simple columnar epithelia

4. Stratified squamous epithelia

5. Stratified cuboidal epithelia

6. Stratified columnar epithelia

 

Stratified squamous epithelia is best suited for areas subject to friction.

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Filed Under: Biology
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Q:

A water tank has holes. The 1st hole alone empties the tank in 9 min and 2nd hole alone empties the tank in 6 min. If water leaks out at a constant rate, how many min does it take if both the holes together empty the tank?

A) 3 3/5 B) 3/5
C) 3 1/5 D) 3 2/5
 
Answer & Explanation Answer: A) 3 3/5

Explanation:
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Filed Under: Pipes and Cistern
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Q:

The pressure exerted by a 760 mm column of mercury at 0°C  is known as

A) 1 pascal B) 1 atmosphere
C) 1 bar D) 1 poise
 
Answer & Explanation Answer: B) 1 atmosphere

Explanation:

1 atm: It was originally defined as the pressure exerted by 760 mm of mercury at 0 °C and standard gravity (g = 9.80665 m/s2).

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Filed Under: Physics
Exam Prep: Bank Exams

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