Questions

Q:

The mass of a mole of NaCl is the

A) 58.44 gm/mol B) 57.25 gm/mol
C) 56.31 gm/mol D) 59.14 gm/mol
 
Answer & Explanation Answer: A) 58.44 gm/mol

Explanation:

To get the mass of a mole of NaCl, we need to add the molar atomic weights of the individual elements i.e, Na and Cl

Atomic weights of Na = 22.99 gm/mol  Cl = 35.45 gm/mol

 

Now, mass of a mole of NaCl = 22.99 + 35.45 = 58.44 gm/mol.

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Filed Under: Chemistry
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Q:

18 h on a g c?

Answer

The given letter equation 18 h on a g represents that 18 holes on a golf course.

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Subject: Word Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

The Waterfall with the greatest meterage in the fall is 

A) The Jog Falls, India B) The Victoria Falls, Africa
C) The Niagara Falls, N America D) The Salto Angel Falls, S America
 
Answer & Explanation Answer: D) The Salto Angel Falls, S America

Explanation:

The greatest single drop of the waterfall, Salto Angel of Venezuela, measures 807m and the width at the base is about 150 m. From top to bottom the Angel falls measures 979 m - almost 1 km.

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Q:

By monitoring ad campaign performance, an advertiser may obtain the information needed to

A) determine if campaigns are meeting overall marketing and conversion goals B) create additional AdWords accounts for low-performing keywords
C) compare campaign performance to that of individual competitors D) create duplicate ad groups with identical keywords and different ad variations
 
Answer & Explanation Answer: A) determine if campaigns are meeting overall marketing and conversion goals

Explanation:

By monitoring ad campaign performance an advertiser may obtain the information needed to determine if campaigns are meeting overall marketing and conversion goals compare campaign performance to that of other advertisers create separate adwords accounts for low-performing keywords create duplicate ad groups with identical keywords and different ad variations.

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Q:

An example of a latent viral infection is

A) Influenza B) Mumps
C) Cold sores D) Smallpox
 
Answer & Explanation Answer: C) Cold sores

Explanation:
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Q:

Cobalt 60 is used for cancer treatment it emmits which rays?

A) Alpha B) Beta
C) Gamma D) X rays
 
Answer & Explanation Answer: C) Gamma

Explanation:

Cobalt therapy or cobalt-60 therapy is the medical use of gamma rays from the radioisotope cobalt-60 to treat conditions such as cancer.

 

Cobalt 60 is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. It is produced artificially in nuclear reactors.

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Q:

Which of these is an example of negative feedback?

A) After you eat, insulin stimulates the lowering of blood sugar levels. B) Once labor begins, contractions increase in frequency and intensity.
C) After you eat, glucagon stimulates an increase in blood sugar levels. D) As a blood clot begins to form, the process of its formation gets faster and faster.
 
Answer & Explanation Answer: A) After you eat, insulin stimulates the lowering of blood sugar levels.

Explanation:

Eating raises blood sugar levels, insulin stimulates the lowering of blood sugar level. In this example the response to the stimulus (increased blood sugar levels) opposes that stimulus (by lowering blood sugar levels).

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Q:

Evergreen trees lose their leaves steadily all year.

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

Explanation:

Trees that lose all of their leaves for part of the year are known as deciduous trees. Those that don't are called evergreen trees.

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Subject: General Science
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