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Q:

When should you discard a PFD?

A) When it is too small B) When its been used 1 year
C) When its been used 1 month D) When it has a torn strap
 
Answer & Explanation Answer: D) When it has a torn strap

Explanation:

Personal flotation devices (PFDs), have life span upto it is damaged. Hence, When it has a torn strap you should discard a PFD.

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Filed Under: General Awareness
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Q:

What type of map is best suited for maritime navigation?

A) Mercator projection B) Conic projection
C) Geologic D) Topographic
 
Answer & Explanation Answer: A) Mercator projection

Explanation:

Mercator projection type of maps are best suited for maritime navigations.

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Filed Under: Indian Geography
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Q:

The limbic system structure that regulates hunger is called the

A) Hypothalamus B) Cerebellum
C) Pituitary gland D) Cerebrum
 
Answer & Explanation Answer: A) Hypothalamus

Explanation:

the_limbic_system_structure_that_regulates_hunger_is_called_the1545974338.png image

 

The hypothalamus which is near the pituitary gland is a small region located at the base of the brain. The hypothalamus plays a crucial role in many important functions including releasing hormones, regulating body temperature, regulates hunger etc...

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Filed Under: Biology
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Q:

Select the correct statement about photosynthesis by primary producers.

A) Photosynthetic protists and prokaryotes Carry out the majority of the photosynthesis in aquatic communities. B) Land plants carry out over 80% of the world's photosynthesis.
C) Cyanobacteria carry out more of the world's photosynthesis than protist do. D) All of the above
 
Answer & Explanation Answer: A) Photosynthetic protists and prokaryotes Carry out the majority of the photosynthesis in aquatic communities.

Explanation:
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Filed Under: Biology
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Q:

Molar mass of HNO3?

A) 63 g/mol B) 53 g/mol
C) 48 g/mol D) 52 g/mol
 
Answer & Explanation Answer: A) 63 g/mol

Explanation:

Calculation of molar mass of HNO3:

Atomic masses of H, N, O are 1, 14, 16 respectively

Now the molar mass of HNO3 is

HNO3 = 1X1 + 1X14 + 3X16

= 1 + 14 + 48

= 63 g/mol or amu.

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Filed Under: Chemistry
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Q:

The greenhouse effect is caused solely by human activity.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True, the greenhouse effect is caused solely by human activities such as deforrestation, depletion of natural resources and emission of CO2 by using vehicles, refrigerators and AC's.

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Subject: General Science
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Q:

How many bits are in an IPV4 address?

A) 128 bits B) 64 bits
C) 32 bits D) 16 bits
 
Answer & Explanation Answer: C) 32 bits

Explanation:

IPV4 Internet Protocol Version 4 has 32 bits of address.

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Filed Under: Hardware
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Q:

Which of the following is a function of the geosphere? 

A) providing a moderate, livable climate B) serving as the interface between the other spheres
C) facilitating the movement of water through spheres through transpiration D) facilitating the process of photosynthesis
 
Answer & Explanation Answer: B) serving as the interface between the other spheres

Explanation:

The geosphere is the earth's solid rock or rigid outer layer known as the crust. Without the geosphere it would not be possible for humans to live on the planet. The function of the geosphere serving as the interface between the other spheres.

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Filed Under: General Science
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