Questions

Q:

A hunter on the ground wishes to shoot a  bird on a tree at a distance with his rifle. He has to point the rifle

A) at the lower alevation than the bird B) at a higher alevation than the bird
C) In the same direction as the bird D) vertically upwards
 
Answer & Explanation Answer: B) at a higher alevation than the bird

Explanation:

The trajectory of the bullet is a parabola

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Filed Under: Physics

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Q:

Which of the following is used to preserve specimens in the biology laboratory?

A) Phenol B) Benzaldehyde
C) Formaldehyde D) Acetic acid
 
Answer & Explanation Answer: C) Formaldehyde

Explanation:

A 40% solution of Formaldehyde known as Formalin is used in the preservation of biological specimens because of its hardening action on proteins. 

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Filed Under: Chemistry

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Q:

Floridian starch is characteristic energy storage material of which algae?

A) Blue green algae B) Brown algae
C) Red algae D) Green algae
 
Answer & Explanation Answer: C) Red algae

Explanation:

The floridian starch is reserve food materials in the red algae or the members of class Rhodophytae. It is a characteristic feature of this group.

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Filed Under: Biology
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Q:

Describe the Buddy system of memory allocation.

Answer

Free memory is maintained in linked lists, each of equal sized blocks. Any such block is of size 2^k. When some memory is required by a process, the block size of next higher order is chosen, and broken into two. Note that the two such pieces differ in address only in their kth bit. Such pieces are called buddies. When any used block is freed, the OS checks to see if its buddy is also free. If so, it is rejoined, and put into the original free-block linked-list.

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Q:

A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the the bucket. The reading of the spring balance

A) will increase B) will decrease
C) does not change D) varies with the increase of depth of the immersion of the iron piece
 
Answer & Explanation Answer: A) will increase

Explanation:

When the piece of iron is lowered into the water, the water level in the bucket increases. And so the pressure at the bottom of bucket also increases. Thus the total thrust at bottom also increases. Therefore the spring balance reading increases. Thus (a) is correct.

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Filed Under: Physics

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Q:

"A-Z GST Guide" program launched by which E-commerce firm for sellers to get insights and help related to the goods and services tax (GST) in 2017 ?

A) Flipkart B) Amazon
C) eBay D) Snapdeal
 
Answer & Explanation Answer: B) Amazon

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

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Q:

Prokaryotic cells lack

A) Membrane bound by organelles B) Nucleolus
C) Nuclear membrane D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Prokaryotic cells lack a nucleus and do not have an extensive system of interior membranes. They are encased in a cell wall and many contain external structures such as a capsule, flagellum, or pili. Prokaryotes – have a relatively uniform interior that is not subdivided by internal membranes.

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Filed Under: Biology
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Q:

The capital of Colombia is ?

A) Caracas B) Santiago
C) Lima D) Bogota
 
Answer & Explanation Answer: D) Bogota

Explanation:
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Filed Under: World Geography
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

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