Questions

Q:

 A supertype/subtype hierarchy has which of the following features?

A) Subtypes at the lower lever in the hierarchy inherit attributes only from their immediate supertype. B) Subtypes at the higher lever in the hierarchy inherit attributes only from their immediate subtype.
C) Attributes are assigned at the highest logical level. D) Attributes are assigned at the lowest logical level.
 
Answer & Explanation Answer: C) Attributes are assigned at the highest logical level.

Explanation:
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Filed Under: Database

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Q:

"Shakti Sthal" is the memorial of who of the following Indians ?

A) Jawaharlal nehru B) Lal Bahaddur sastry
C) Indira Gandhi D) Jagjeevan Ram
 
Answer & Explanation Answer: C) Indira Gandhi

Explanation:
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Filed Under: Indian History

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Q:

' Neela Charid ' which won the vyas Samman in 1992 is written by

A) Subhash Mukhopadhyay B) VS. Naipaul
C) Ram Vilas Sharma D) Shiv Prasad Singh
 
Answer & Explanation Answer: D) Shiv Prasad Singh

Explanation:
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Filed Under: Books and Authors

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Q:

What element is used in bright flashing advertising signs?

A) Neon B) Helium
C) Mercury D) Radon
 
Answer & Explanation Answer: A) Neon

Explanation:

Neon is the element that is used in bright flashing advertising signs as Neon particulary gives bright color.

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Filed Under: General Science
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Q:

A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by 

A) decreasing the radius of the capillary tube B) increasing the radius of the capillary tube
C) increasing the height of water in the vessel D) None of these
 
Answer & Explanation Answer: A) decreasing the radius of the capillary tube

Explanation:

The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to  the upward force due to surface tension. So it is clear that if the bore to the tube is decreased , the height of the water column in it  must be greater.

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Filed Under: Physics

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Q:

A bond formed by sharing of electrons between atoms of the element is called

A) ionic bond B) covalent bond
C) co ordinate bond D) none
 
Answer & Explanation Answer: B) covalent bond

Explanation:
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Filed Under: Chemistry

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Q:

Who invented waterproof fabrics ?

A) James Dewar B) Charles Goodyear
C) Mary Moore D) Charles Macintosh
 
Answer & Explanation Answer: D) Charles Macintosh

Explanation:

Charles Macintosh (29 December 1766 – 25 July 1843) was a Scottish chemist and inventor of waterproof fabrics.He devoted all his spare time to science, particularly chemistry, and before he was twenty resigned his clerkship to take up the manufacture of chemicals. In this he was highly successful, inventing various new processes. His experiments with one of the by-products of tar, naphtha, led to his invention of waterproof fabrics.

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Filed Under: Inventions
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Q:

What is a direct result of aerobic respiration?

A) The enzymes for anaerobic respiration are produced and stored in lysosomes B) Alcohol is produced by yeast and bacteria
C) The potential energy of glucose is transferred to ATP molecules D) Lactic acid is produced in muscle tissue
 
Answer & Explanation Answer: C) The potential energy of glucose is transferred to ATP molecules

Explanation:

Aerobic respiration is the reaction takes place in presence of oxygen which quite opposite to anerobic. The direct result of aerobic repiration is ATP molecules from breakdown of glucose molecules.

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Filed Under: Biology
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