AIEEE Questions and Answers with Explanation

Q:

Assertion(A) : Indus valley people knew the art of navigation.
Reason(R) : Indus valley seals indicate prevalence of overseas trade.

A) R is true but A is fale	B) A is true but R is false
C) Both A and R are false	D) R correctly explains A

Answer & Explanation Answer: D) R correctly explains A

Explanation:

The seals found at Indus valley sites gave evidance of overseas trade, which was possible only with the knowledge of art of navigation.
Thus, both A and R are true & R correctly explains A.

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Filed Under: Assertion and Reason
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Q:

The first effective vaccine against polio was prepared by ?

A) Robert Edwards	B) James Simpson
C) H Gibbon	D) Jonas E Salk

Answer & Explanation Answer: D) Jonas E Salk

Explanation:

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Filed Under: Inventions
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Q:

GUI stands for

A) Graphical Universal Interface	B) Graph Use Interface
C) Graphical Unique Interface	D) Graphical User Interface

Answer & Explanation Answer: D) Graphical User Interface

Explanation:

GUI stands for Graphical User Interface.

A Graphical User Interface is a computer interface that allows users to interact with a device through graphical elements such as pictures and animations, as opposed to text-based commands.

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Filed Under: Computer
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Q:

Spalling hammer is used for

A) Rough dressing of stones	B) Breaking small projection of stones
C) Driving wooden headed chisels	D) Carving of stones

Answer & Explanation Answer: A) Rough dressing of stones

Explanation:

Spalling_hammer_is_used_for1556191496.jpg image

Spalling hammer is used for Rough dressing of stones.

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Filed Under: General Awareness
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Q:

Which observation proves that a cell is a eukaryote?

A) It contains DNA	B) It contains ribosomes
C) It has a cell membrane	D) It has DNA inside a nucleus

Answer & Explanation Answer: D) It has DNA inside a nucleus

Explanation:

Eukaryotic cells all have a nucleus. Eukaryotes are organisms that are multicellular, although there are some examples of single cellular eukaryotes. So eukaryotic cells can be either cell with a nucleus or a eukaryotic organism's cell.

The most important feature to judge whether it has nucleus membrane.

And for other choices, they are the common features of eukaryote and prokaryote.

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Filed Under: Biology
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Q:

Which of the following is tropical grassland?

A) Savannah	B) Pampas
C) Prairies	D) Taiga

Answer & Explanation Answer: A) Savannah

Explanation:

Tropical grasslands, or savannas, are also the homes of primates in Africa and Asia; no savanna-living primates exist in South America. Tropical grasslands comprise a mixture of trees and grasses, the proportion of trees to grass varying directly with the rainfall.

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Filed Under: Indian Geography
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Q:

A man sold two flats for Rs. 4.15 lakhs each. On one he gained 2% and on the other he lost 2%. What percent is the effect of the sale on the whole ?

A) 0.25 %	B) 0.04 %
C) 0.5 %	D) 0 %

Answer & Explanation Answer: B) 0.04 %

Explanation:

In this type cases we always have loss only.

Loss% = ${(\frac{C o m m o n G a i n o r L o s s}{10})}^{2}$ = ${(\frac{2}{10})}^{2}$ = 1/25 = 0.04 %

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Filed Under: Profit and Loss
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Q:

The Value of $[\log (\tan (1^{0})) + \log (\tan (2^{0})) + \dots \dots + \log (\tan (89^{0}))]$ is

A) -1	B) 0
C) 1/2	D) 1

Answer & Explanation Answer: B) 0

Explanation:

$= [\log \tan (1^{0}) + \log \tan (89^{0})] + [\log \tan (2^{0}) + \log \tan (88^{0})] + \dots \dots + [\log \tan (45^{0})]$

$= \log [\tan (1^{0}) \times \tan (89^{0})] + \log [\tan (2^{0}) \times \tan (88^{0})] + \dots \dots + \log (1)$

$[∵ \tan (90 - θ) = c o t θ a n d \tan (45^{0}) = 1]$

= log 1 + log 1 +.....+log 1

= 0.

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Filed Under: Logarithms
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