Questions

Q:

Statement I :

Bioaccumulation is a process of progressive accumulation of heavy metals and pesticides in an organism.

Statement II :

Large fishes of the pond are found to have higher concentration of pesticides than planktons of the same pond.

 

A) Both the statements are individually true and Statement II is the correct explanation of Statement I B) Both the statements are individually true but Statement II is not the correct explanation of Statement I
C) Statement I is true but Statement II is false D) Statement I is false but Statement II is true
 
Answer & Explanation Answer: B) Both the statements are individually true but Statement II is not the correct explanation of Statement I

Explanation:

Bioaccumulation is defined as the increase in concentration of a substance(s) in an organism or a part of that organism.

The affected organism has a higher concentration of the substance than the concentration in the organism's surrounding environment.

For the second statement: Microorganisms eat pesticide infected things. Invertebrates eat hundreds of the microorganisms and plants infected with the pesticides, accumulating a pretty large amount of the toxin in them.

The invertebrates are generally then eaten by larger invertebrates or amphibians, which ingest hundreds of similar organisms, accumulating an even higher concentration of toxins in their bodies. Then the fish eat hundreds of these organisms, accumulating the highest concentration of toxins in themselves.

 

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: Bank Exams

1 20828
Q:

Which was the 1st non test playing country to beat India in an international match

A) Canada B) Sri Lanka
C) Zimbabwe D) East Africa
 
Answer & Explanation Answer: B) Sri Lanka

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Sports

96 20806
Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives.


In mid-2012 I completed my first massive online open course, or MOOC, the kind widely offered by Coursera, EdX, Udacity and so on in partnership with different educational institutions. It was on clinical trials and ethical practices, offered by Johns Hopkins, on Coursera. This was shortly before the MOOC sensation hit India, and when Coursera, which was founded by two Stanford professors, itself was just a few months old. The MOOC bug had bit me. The course I’d completed was mainly designed for health care professionals who would be involved in actual clinical trials, not college students who had no prior knowledge of that area. I decided to enroll in the course because it was the only biology related course open at the time. However, I did see hope in that sometime in the future I’d be able to get a glimpse of what classes are like in the hallowed halls of major educational institutions around the world. By early 2013, Coursera and EdX had partnered with so many educational institutions and expanded their course offerings to include everything from food and nutrition to Greek mythology to business, that I was spoilt for choice. I spent hours going through course catalogues and poring over course descriptions, almost delirious with excitement at the fact that I was actually going to be able to take classes offered by universities I had only dreamt of attending.


Coursera was founded by professors from which university?

A) Harvard B) Massachusetts
C) Stanford D) Oxford
 
Answer & Explanation Answer: C) Stanford

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: English
Exam Prep: Bank Exams

0 20789
Q:

Who said, "Inflation is unjust but deflation is inexpedient. Of the two, deflation is worse "?

A) J.M Keynes B) Amartya Sen
C) J.G Gurlay D) J.N Bhagwati
 
Answer & Explanation Answer: A) J.M Keynes

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: General Awareness

149 20787
Q:

It is more difficult to walk on ice than on a concrete road because 

A) there is very little friction between the ice and feet pressing it B) ice is soft when compared to concrete
C) there is more friction between the ice and feer D) None of these
 
Answer & Explanation Answer: A) there is very little friction between the ice and feet pressing it

Explanation:

It is the friction between the feet and the ground that helps us to walk. Without this friction we would slip and fall

Report Error

View Answer Report Error Discuss

Filed Under: Physics

120 20782
Q:

Microcomputer hardware consists of three basic categories of physical equipment ____

A) Keyboard, monitor, hard drive B) system unit, input/output, memory
C) system unit, input/output, secondary storage D) system unit, primary storage, secondary storage
 
Answer & Explanation Answer: C) system unit, input/output, secondary storage

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Computer
Exam Prep: Bank Exams

99 20781
Q:

Select the antonym of

diligence

A) lethargy B) exertion
C) vigour D) assiduity
 
Answer & Explanation Answer: A) lethargy

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: English
Exam Prep: Bank Exams

8 20764
Q:

Rain drops acquire spherical shape due to 

A) viscosity B) surface tension
C) friction D) elasticity
 
Answer & Explanation Answer: B) surface tension

Explanation:

The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area. This surface tension is the "skin" of a body of water that makes the molecules stick together.

                                 Rain_drops_acquire_spherical_shape_due_to1558074071.png image 

Report Error

View Answer Report Error Discuss

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

123 20757