Exams


Q:

A work which could be finished in 11 days was finished 4 days earlier after 4 more men joined. The number of men employed was ?

A) 7 B) 8
C) 9 D) 10
 
Answer & Explanation Answer: A) 7

Explanation:

As the work is same
M1D1 = M2D2

Here Let the number of men employed was M
=> 11M = 7(M+4)
=> 11M - 7M = 28
=> M = 7

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Filed Under: Time and Work
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4 5516
Q:

Study Of Cells Is Called

A) Cellogysm B) Cell biology
C) Cell Organism D) None
 
Answer & Explanation Answer: B) Cell biology

Explanation:

The branch of biology that studies the different structures and functions of the cell is called Cell Biology or Cytology.

 

 A cell is the smallest unit of life that can replicate independently, and cells are often called the "building blocks of life"

  

Cell Biology deals with :

        • Life cycle 
        • Structure and organisation of cell organelles and their physiological properties. 
        • Metabolic processes 
        • Interactions with their environment 
        • Signalling pathways.
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Filed Under: Biology
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18 5515
Q:

What is the structural unit of compact bone?

A) Osteon B) Spongy bone
C) Lamellae D) Periosteum
 
Answer & Explanation Answer: A) Osteon

Explanation:

what_is_the_structural_unit_of_compact_bone1536568861.jpg image

 

The structural unit of compact bone is Osteons or Haverisan systems.

 

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Filed Under: Biology
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0 5511
Q:

What is the next letter in the given series
M N J Q G ?

A) U B) S
C) T D) H
 
Answer & Explanation Answer: C) T

Explanation:

1ST SERIES = M J G... It decreasing by 3 alphabets.
2ND SERIES = N Q... It increasing by 3 alphabets.

M N J Q G T...

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Filed Under: Alphabet Test
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5 5509
Q:

Two equal sums were lent, one at the rate of 11% per annum for five years and the other at the rate of 8% per annum for six years, both under simple interest. If the difference in interest accrued in the two cases is Rs 1008. Find the sum?

A) Rs. 14,400 B) Rs. 15,600
C) Rs. 14,850 D) Rs. 15,220
 
Answer & Explanation Answer: A) Rs. 14,400

Explanation:

Let the required Sum = Rs.S

 From the given data,

 1008 = [(S x 11 x 5)/100] - [(S x 8 x 6)/100]

 => S = Rs. 14,400.

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Filed Under: Simple Interest
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18 5503
Q:

In which ecosystem grassland is included?

A) Terrestrial B) Marine
C) Artificial D) Fresh water
 
Answer & Explanation Answer: A) Terrestrial

Explanation:

Grasslands are found in most ecoregions of the Earth.

For example, there are five terrestrial ecoregion classifications of the temperate grasslands, savannas, and shrublands ecosystem, which is one of eight terrestrial ecozones of the Earth's surface.

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Filed Under: World Geography
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1 5498
Q:

Cryogenic Engines find applications in

A) Frost - Free refrigerators B) Sub-marine propulsion
C) Researches in superconductivity D) Rocket technology
 
Answer & Explanation Answer: D) Rocket technology

Explanation:

Cryogenic Engines find applications in Rocket technology. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.

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Filed Under: Physics
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2 5496
Q:

Oxidation Number of 'S' in H2SO4?

A) +6 B) +2
C) -6 D) -2
 
Answer & Explanation Answer: A) +6

Explanation:

In H2SO4,

Hydrogen has a charge of +2, with each hydrogen has +1.

Oxygen has  a charge of -8, with each oxugen has -2.

Total charge = (2 - 8) = -6

Therefore, the Oxidation number of Sulphur S is '+6' because to make the compound stable.

 

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Filed Under: Chemistry
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11 5494