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Q:

The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find two numbers.

A) 10 & 12 B) 10 & 18
C) 12 & -18 D) -12 & 18
 
Answer & Explanation Answer: D) -12 & 18

Explanation:

Given, difference of the squares of two numbers is 180.

k2 - l2 - 180

 

Also, square of the smaller number is 8 times the larger.

= l= 8k

 

Thus, k2 - 8a - 180 = 0

k2 – 18k + 10k - 180 = 0

→  k(k - 18) + 10(k – 18) = 0

= (k + 10)(k – 18) = 0

→  k = -10, 18

 

Thus, the other number is

324 - 180 = l2 

 

→ Numbers are 12, 18 or -12, 18.

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Filed Under: Numbers
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Q:

Which among the following crop is a major Kharif Crop of India?

A) Red Chilli B) Water Mellon
C) Pumpkin D) Wheat
 
Answer & Explanation Answer: A) Red Chilli

Explanation:
  • Major Kharif crops of India include Millets (Bajra & Jowar), Cotton, Soyabean, Sugarcane, Turmeric, Paddy (Rice), Maize, Moong (Pulses), Groundnut, Red Chillies, etc.

 

  • The Kharif crop is the summer crop or monsoon crop in India. Kharif crops are usually sown with the beginning of the first rains in July, during the south-west monsoon season.
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Filed Under: Indian Geography
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Q:

Two main measures for the efficiency of an algorithm are

A) Time and Space B) Complexity and Memory
C) Data and Space D) Memory and Processor
 
Answer & Explanation Answer: A) Time and Space

Explanation:

Two main measures for the efficiency of an algorithm are Time and Space.

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Q:

You can use Keyword Planner to identify

A) Determine which Google Ads experience you're using. B) Which text ads are performing best based on your keywords
C) Webpages where ad can appear based on your keywords D) The amount of traffic potential keywords might get
 
Answer & Explanation Answer: D) The amount of traffic potential keywords might get

Explanation:

You_can_use_Keyword_Planner_to_identify1554271615.jpg image

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Q:

Demography is the scientific study of

A) Growth of population B) The well being of populations
C) Birth and death of population D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Demography is the scientific study of Birth and death, The well being and the Growth of population. In brief, it is the study of human populations based on their size, composition and distribution across space – and the process through which populations change.

Demography_is_the_scientific_study_of1554269267.jpg image

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Q:

The phosphorus cycle differs from the biogeochemical cycles in that

A) does not have atmospheric reservoir B) uses water more
C) have atmospheric reservoir D) None of the above
 
Answer & Explanation Answer: A) does not have atmospheric reservoir

Explanation:

Unlike other gas cycles, the phosphorus cycle differs in having atmospheric reservoir. No other gases are involved in it.

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Filed Under: Chemistry
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Q:

Which is a difference between proteins and carbohydrates and fats?

A) Proteins are composed of monomers; carbohydrates and fats are not. B) Excess carbohydrates and fats are stored; excess proteins are not.
C) Proteins are macromolecules; carbohydrates and fats are not. D) Carbohydrates and fats contain carbon, hydrogen, and oxygen; proteins do not.
 
Answer & Explanation Answer: B) Excess carbohydrates and fats are stored; excess proteins are not.

Explanation:

All proteins, carbohydrates and fats are macronutrients that we need to make living. They contribute to 90% of the dry weight of our diet. 

 

From the given options, Excess carbohydrates and fats are stored; excess proteins are not.

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Q:

Carbon, Diamond and Graphite are together called

A) Isomers B) Isotopes
C) Allotrope D) Isomorphs
 
Answer & Explanation Answer: C) Allotrope

Explanation:
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Filed Under: Chemistry
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