Questions

Q:

Milk is an example of a

A) Emulsion B) Solution
C) Gel D) Suspension
 
Answer & Explanation Answer: A) Emulsion

Explanation:

Milk is an emulsion of oil in water (o/w).


Emulsion: A suspension of droplets of one liquid in another.

Constituents of milk :

The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.

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Q:

Which of the following statements about monosaccharide structure is true?

A) Aldoses and ketoses differ in the position of their hydroxyl groups. B) Monosaccharides can be classified according to the spatial arrangement of their atoms.
C) All monosaccharides contain carbon, hydrogen, oxygen, and nitrogen atoms. D) A six-carbon sugar is called a pentose.
 
Answer & Explanation Answer: B) Monosaccharides can be classified according to the spatial arrangement of their atoms.

Explanation:

Monosaccharides, also called simple sugars, are the most basic units of carbohydrates. They are fundamental units of carbohydrates and cannot be further hydrolyzed to simpler compounds.

 

Hence, Monosaccharides can be classified according to the spatial arrangement of their atoms is true about Monosaccharides.

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Q:

A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

A) Depends on their masses B) Sphere
C) Disk D) Both reach at the same time
 
Answer & Explanation Answer: B) Sphere

Explanation:

Time does not depend on mass, else

T  1 + k2R2 

 

  k2R2=> is least for 'sphere' and

 

hence least time is taken by sphere.

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Q:

In a certain city, 5% of all the persons in town have unlisted phone numbers. If you select 100 names at random from that city's phone directory, how many people selected will have unlisted phone numbers?

Answer

  Zero. You are selecting names from the list, so they are all listed.

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Subject: Math Puzzles

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Q:

How many birthdays does the average person have?

Answer

Any person can have only 1 birthday i.e, the day he was born. And every year we celebrate it's anniversaries.

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Q:

Kalbaisakhis or Norwesters originate in

A) Chhota Nagpur Plateau B) Karnataka Coast
C) Coromandal Coast D) Malwa plateau
 
Answer & Explanation Answer: A) Chhota Nagpur Plateau

Explanation:

They are carried eastwards to West Bengal and Assam by westerly winds

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Q:

The country which proposed the observance of the World Pulses Day?

 

A) Berlin B) Benin
C) Burkina Faso D) Nigeria
 
Answer & Explanation Answer: C) Burkina Faso

Explanation:

Burkina Faso proposed the observance of World Pulses Day on 10th February.

 

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Q:

The monomer of polythene is

A) ethylene B) ethyl alcohol
C) vinyl chloride D) ethanol
 
Answer & Explanation Answer: A) ethylene

Explanation:

The monomer of polythene is ethylene.

the_monomer_of_polythene_is1546857163.png image

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